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# sqlglot.dialects.bigquery

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      1from __future__ import annotations
      2
      3import logging
      4import re
      5import typing as t
      6
      7from sqlglot import exp, generator, parser, tokens, transforms
      8from sqlglot.dialects.dialect import (
      9    Dialect,
     10    NormalizationStrategy,
     11    arg_max_or_min_no_count,
     12    binary_from_function,
     13    date_add_interval_sql,
     14    datestrtodate_sql,
     15    build_formatted_time,
     16    filter_array_using_unnest,
     17    if_sql,
     18    inline_array_unless_query,
     19    max_or_greatest,
     20    min_or_least,
     21    no_ilike_sql,
     22    build_date_delta_with_interval,
     23    regexp_replace_sql,
     24    rename_func,
     25    sha256_sql,
     26    timestrtotime_sql,
     27    ts_or_ds_add_cast,
     28    unit_to_var,
     29)
     30from sqlglot.helper import seq_get, split_num_words
     31from sqlglot.tokens import TokenType
     32
     33if t.TYPE_CHECKING:
     34    from sqlglot._typing import E, Lit
     35
     36logger = logging.getLogger("sqlglot")
     37
     38
     39def _derived_table_values_to_unnest(self: BigQuery.Generator, expression: exp.Values) -> str:
     40    if not expression.find_ancestor(exp.From, exp.Join):
     41        return self.values_sql(expression)
     42
     43    structs = []
     44    alias = expression.args.get("alias")
     45    for tup in expression.find_all(exp.Tuple):
     46        field_aliases = (
     47            alias.columns
     48            if alias and alias.columns
     49            else (f"_c{i}" for i in range(len(tup.expressions)))
     50        )
     51        expressions = [
     52            exp.PropertyEQ(this=exp.to_identifier(name), expression=fld)
     53            for name, fld in zip(field_aliases, tup.expressions)
     54        ]
     55        structs.append(exp.Struct(expressions=expressions))
     56
     57    # Due to `UNNEST_COLUMN_ONLY`, it is expected that the table alias be contained in the columns expression
     58    alias_name_only = exp.TableAlias(columns=[alias.this]) if alias else None
     59    return self.unnest_sql(
     60        exp.Unnest(expressions=[exp.array(*structs, copy=False)], alias=alias_name_only)
     61    )
     62
     63
     64def _returnsproperty_sql(self: BigQuery.Generator, expression: exp.ReturnsProperty) -> str:
     65    this = expression.this
     66    if isinstance(this, exp.Schema):
     67        this = f"{self.sql(this, 'this')} <{self.expressions(this)}>"
     68    else:
     69        this = self.sql(this)
     70    return f"RETURNS {this}"
     71
     72
     73def _create_sql(self: BigQuery.Generator, expression: exp.Create) -> str:
     74    returns = expression.find(exp.ReturnsProperty)
     75    if expression.kind == "FUNCTION" and returns and returns.args.get("is_table"):
     76        expression.set("kind", "TABLE FUNCTION")
     77
     78        if isinstance(expression.expression, (exp.Subquery, exp.Literal)):
     79            expression.set("expression", expression.expression.this)
     80
     81    return self.create_sql(expression)
     82
     83
     84# https://issuetracker.google.com/issues/162294746
     85# workaround for bigquery bug when grouping by an expression and then ordering
     86# WITH x AS (SELECT 1 y)
     87# SELECT y + 1 z
     88# FROM x
     89# GROUP BY x + 1
     90# ORDER by z
     91def _alias_ordered_group(expression: exp.Expression) -> exp.Expression:
     92    if isinstance(expression, exp.Select):
     93        group = expression.args.get("group")
     94        order = expression.args.get("order")
     95
     96        if group and order:
     97            aliases = {
     98                select.this: select.args["alias"]
     99                for select in expression.selects
    100                if isinstance(select, exp.Alias)
    101            }
    102
    103            for grouped in group.expressions:
    104                if grouped.is_int:
    105                    continue
    106                alias = aliases.get(grouped)
    107                if alias:
    108                    grouped.replace(exp.column(alias))
    109
    110    return expression
    111
    112
    113def _pushdown_cte_column_names(expression: exp.Expression) -> exp.Expression:
    114    """BigQuery doesn't allow column names when defining a CTE, so we try to push them down."""
    115    if isinstance(expression, exp.CTE) and expression.alias_column_names:
    116        cte_query = expression.this
    117
    118        if cte_query.is_star:
    119            logger.warning(
    120                "Can't push down CTE column names for star queries. Run the query through"
    121                " the optimizer or use 'qualify' to expand the star projections first."
    122            )
    123            return expression
    124
    125        column_names = expression.alias_column_names
    126        expression.args["alias"].set("columns", None)
    127
    128        for name, select in zip(column_names, cte_query.selects):
    129            to_replace = select
    130
    131            if isinstance(select, exp.Alias):
    132                select = select.this
    133
    134            # Inner aliases are shadowed by the CTE column names
    135            to_replace.replace(exp.alias_(select, name))
    136
    137    return expression
    138
    139
    140def _build_parse_timestamp(args: t.List) -> exp.StrToTime:
    141    this = build_formatted_time(exp.StrToTime, "bigquery")([seq_get(args, 1), seq_get(args, 0)])
    142    this.set("zone", seq_get(args, 2))
    143    return this
    144
    145
    146def _build_timestamp(args: t.List) -> exp.Timestamp:
    147    timestamp = exp.Timestamp.from_arg_list(args)
    148    timestamp.set("with_tz", True)
    149    return timestamp
    150
    151
    152def _build_date(args: t.List) -> exp.Date | exp.DateFromParts:
    153    expr_type = exp.DateFromParts if len(args) == 3 else exp.Date
    154    return expr_type.from_arg_list(args)
    155
    156
    157def _build_to_hex(args: t.List) -> exp.Hex | exp.MD5:
    158    # TO_HEX(MD5(..)) is common in BigQuery, so it's parsed into MD5 to simplify its transpilation
    159    arg = seq_get(args, 0)
    160    return exp.MD5(this=arg.this) if isinstance(arg, exp.MD5Digest) else exp.LowerHex(this=arg)
    161
    162
    163def _array_contains_sql(self: BigQuery.Generator, expression: exp.ArrayContains) -> str:
    164    return self.sql(
    165        exp.Exists(
    166            this=exp.select("1")
    167            .from_(exp.Unnest(expressions=[expression.left]).as_("_unnest", table=["_col"]))
    168            .where(exp.column("_col").eq(expression.right))
    169        )
    170    )
    171
    172
    173def _ts_or_ds_add_sql(self: BigQuery.Generator, expression: exp.TsOrDsAdd) -> str:
    174    return date_add_interval_sql("DATE", "ADD")(self, ts_or_ds_add_cast(expression))
    175
    176
    177def _ts_or_ds_diff_sql(self: BigQuery.Generator, expression: exp.TsOrDsDiff) -> str:
    178    expression.this.replace(exp.cast(expression.this, exp.DataType.Type.TIMESTAMP))
    179    expression.expression.replace(exp.cast(expression.expression, exp.DataType.Type.TIMESTAMP))
    180    unit = unit_to_var(expression)
    181    return self.func("DATE_DIFF", expression.this, expression.expression, unit)
    182
    183
    184def _unix_to_time_sql(self: BigQuery.Generator, expression: exp.UnixToTime) -> str:
    185    scale = expression.args.get("scale")
    186    timestamp = expression.this
    187
    188    if scale in (None, exp.UnixToTime.SECONDS):
    189        return self.func("TIMESTAMP_SECONDS", timestamp)
    190    if scale == exp.UnixToTime.MILLIS:
    191        return self.func("TIMESTAMP_MILLIS", timestamp)
    192    if scale == exp.UnixToTime.MICROS:
    193        return self.func("TIMESTAMP_MICROS", timestamp)
    194
    195    unix_seconds = exp.cast(
    196        exp.Div(this=timestamp, expression=exp.func("POW", 10, scale)), exp.DataType.Type.BIGINT
    197    )
    198    return self.func("TIMESTAMP_SECONDS", unix_seconds)
    199
    200
    201def _build_time(args: t.List) -> exp.Func:
    202    if len(args) == 1:
    203        return exp.TsOrDsToTime(this=args[0])
    204    if len(args) == 2:
    205        return exp.Time.from_arg_list(args)
    206    return exp.TimeFromParts.from_arg_list(args)
    207
    208
    209def _build_datetime(args: t.List) -> exp.Func:
    210    if len(args) == 1:
    211        return exp.TsOrDsToTimestamp.from_arg_list(args)
    212    if len(args) == 2:
    213        return exp.Datetime.from_arg_list(args)
    214    return exp.TimestampFromParts.from_arg_list(args)
    215
    216
    217def _build_regexp_extract(args: t.List) -> exp.RegexpExtract:
    218    try:
    219        group = re.compile(args[1].name).groups == 1
    220    except re.error:
    221        group = False
    222
    223    return exp.RegexpExtract(
    224        this=seq_get(args, 0),
    225        expression=seq_get(args, 1),
    226        position=seq_get(args, 2),
    227        occurrence=seq_get(args, 3),
    228        group=exp.Literal.number(1) if group else None,
    229    )
    230
    231
    232def _str_to_datetime_sql(
    233    self: BigQuery.Generator, expression: exp.StrToDate | exp.StrToTime
    234) -> str:
    235    this = self.sql(expression, "this")
    236    dtype = "DATE" if isinstance(expression, exp.StrToDate) else "TIMESTAMP"
    237
    238    if expression.args.get("safe"):
    239        fmt = self.format_time(
    240            expression,
    241            self.dialect.INVERSE_FORMAT_MAPPING,
    242            self.dialect.INVERSE_FORMAT_TRIE,
    243        )
    244        return f"SAFE_CAST({this} AS {dtype} FORMAT {fmt})"
    245
    246    fmt = self.format_time(expression)
    247    return self.func(f"PARSE_{dtype}", fmt, this, expression.args.get("zone"))
    248
    249
    250class BigQuery(Dialect):
    251    WEEK_OFFSET = -1
    252    UNNEST_COLUMN_ONLY = True
    253    SUPPORTS_USER_DEFINED_TYPES = False
    254    SUPPORTS_SEMI_ANTI_JOIN = False
    255    LOG_BASE_FIRST = False
    256    HEX_LOWERCASE = True
    257    FORCE_EARLY_ALIAS_REF_EXPANSION = True
    258    EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True
    259
    260    # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#case_sensitivity
    261    NORMALIZATION_STRATEGY = NormalizationStrategy.CASE_INSENSITIVE
    262
    263    # bigquery udfs are case sensitive
    264    NORMALIZE_FUNCTIONS = False
    265
    266    # https://cloud.google.com/bigquery/docs/reference/standard-sql/format-elements#format_elements_date_time
    267    TIME_MAPPING = {
    268        "%D": "%m/%d/%y",
    269        "%E6S": "%S.%f",
    270        "%e": "%-d",
    271    }
    272
    273    FORMAT_MAPPING = {
    274        "DD": "%d",
    275        "MM": "%m",
    276        "MON": "%b",
    277        "MONTH": "%B",
    278        "YYYY": "%Y",
    279        "YY": "%y",
    280        "HH": "%I",
    281        "HH12": "%I",
    282        "HH24": "%H",
    283        "MI": "%M",
    284        "SS": "%S",
    285        "SSSSS": "%f",
    286        "TZH": "%z",
    287    }
    288
    289    # The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement
    290    # https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table
    291    PSEUDOCOLUMNS = {"_PARTITIONTIME", "_PARTITIONDATE"}
    292
    293    # All set operations require either a DISTINCT or ALL specifier
    294    SET_OP_DISTINCT_BY_DEFAULT = dict.fromkeys((exp.Except, exp.Intersect, exp.Union), None)
    295
    296    ANNOTATORS = {
    297        **Dialect.ANNOTATORS,
    298        exp.Sign: lambda self, e: self._annotate_by_args(e, "this"),
    299    }
    300
    301    def normalize_identifier(self, expression: E) -> E:
    302        if (
    303            isinstance(expression, exp.Identifier)
    304            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    305        ):
    306            parent = expression.parent
    307            while isinstance(parent, exp.Dot):
    308                parent = parent.parent
    309
    310            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    311            # by default. The following check uses a heuristic to detect tables based on whether
    312            # they are qualified. This should generally be correct, because tables in BigQuery
    313            # must be qualified with at least a dataset, unless @@dataset_id is set.
    314            case_sensitive = (
    315                isinstance(parent, exp.UserDefinedFunction)
    316                or (
    317                    isinstance(parent, exp.Table)
    318                    and parent.db
    319                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    320                )
    321                or expression.meta.get("is_table")
    322            )
    323            if not case_sensitive:
    324                expression.set("this", expression.this.lower())
    325
    326        return expression
    327
    328    class Tokenizer(tokens.Tokenizer):
    329        QUOTES = ["'", '"', '"""', "'''"]
    330        COMMENTS = ["--", "#", ("/*", "*/")]
    331        IDENTIFIERS = ["`"]
    332        STRING_ESCAPES = ["\\"]
    333
    334        HEX_STRINGS = [("0x", ""), ("0X", "")]
    335
    336        BYTE_STRINGS = [
    337            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    338        ]
    339
    340        RAW_STRINGS = [
    341            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    342        ]
    343
    344        KEYWORDS = {
    345            **tokens.Tokenizer.KEYWORDS,
    346            "ANY TYPE": TokenType.VARIANT,
    347            "BEGIN": TokenType.COMMAND,
    348            "BEGIN TRANSACTION": TokenType.BEGIN,
    349            "BYTEINT": TokenType.INT,
    350            "BYTES": TokenType.BINARY,
    351            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    352            "DATETIME": TokenType.TIMESTAMP,
    353            "DECLARE": TokenType.COMMAND,
    354            "ELSEIF": TokenType.COMMAND,
    355            "EXCEPTION": TokenType.COMMAND,
    356            "FLOAT64": TokenType.DOUBLE,
    357            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    358            "MODEL": TokenType.MODEL,
    359            "NOT DETERMINISTIC": TokenType.VOLATILE,
    360            "RECORD": TokenType.STRUCT,
    361            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    362        }
    363        KEYWORDS.pop("DIV")
    364        KEYWORDS.pop("VALUES")
    365        KEYWORDS.pop("/*+")
    366
    367    class Parser(parser.Parser):
    368        PREFIXED_PIVOT_COLUMNS = True
    369        LOG_DEFAULTS_TO_LN = True
    370        SUPPORTS_IMPLICIT_UNNEST = True
    371
    372        FUNCTIONS = {
    373            **parser.Parser.FUNCTIONS,
    374            "DATE": _build_date,
    375            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    376            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    377            "DATE_TRUNC": lambda args: exp.DateTrunc(
    378                unit=exp.Literal.string(str(seq_get(args, 1))),
    379                this=seq_get(args, 0),
    380            ),
    381            "DATETIME": _build_datetime,
    382            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    383            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    384            "DIV": binary_from_function(exp.IntDiv),
    385            "FORMAT_DATE": lambda args: exp.TimeToStr(
    386                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    387            ),
    388            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    389            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    390                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    391            ),
    392            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    393            "MD5": exp.MD5Digest.from_arg_list,
    394            "TO_HEX": _build_to_hex,
    395            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    396                [seq_get(args, 1), seq_get(args, 0)]
    397            ),
    398            "PARSE_TIMESTAMP": _build_parse_timestamp,
    399            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    400            "REGEXP_EXTRACT": _build_regexp_extract,
    401            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    402            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    403            "SPLIT": lambda args: exp.Split(
    404                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    405                this=seq_get(args, 0),
    406                expression=seq_get(args, 1) or exp.Literal.string(","),
    407            ),
    408            "TIME": _build_time,
    409            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    410            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    411            "TIMESTAMP": _build_timestamp,
    412            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    413            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    414            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    415                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    416            ),
    417            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    418                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    419            ),
    420            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    421            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    422            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    423                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    424            ),
    425        }
    426
    427        FUNCTION_PARSERS = {
    428            **parser.Parser.FUNCTION_PARSERS,
    429            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    430        }
    431        FUNCTION_PARSERS.pop("TRIM")
    432
    433        NO_PAREN_FUNCTIONS = {
    434            **parser.Parser.NO_PAREN_FUNCTIONS,
    435            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    436        }
    437
    438        NESTED_TYPE_TOKENS = {
    439            *parser.Parser.NESTED_TYPE_TOKENS,
    440            TokenType.TABLE,
    441        }
    442
    443        PROPERTY_PARSERS = {
    444            **parser.Parser.PROPERTY_PARSERS,
    445            "NOT DETERMINISTIC": lambda self: self.expression(
    446                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    447            ),
    448            "OPTIONS": lambda self: self._parse_with_property(),
    449        }
    450
    451        CONSTRAINT_PARSERS = {
    452            **parser.Parser.CONSTRAINT_PARSERS,
    453            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    454        }
    455
    456        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    457        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    458
    459        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    460
    461        STATEMENT_PARSERS = {
    462            **parser.Parser.STATEMENT_PARSERS,
    463            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    464            TokenType.END: lambda self: self._parse_as_command(self._prev),
    465            TokenType.FOR: lambda self: self._parse_for_in(),
    466        }
    467
    468        BRACKET_OFFSETS = {
    469            "OFFSET": (0, False),
    470            "ORDINAL": (1, False),
    471            "SAFE_OFFSET": (0, True),
    472            "SAFE_ORDINAL": (1, True),
    473        }
    474
    475        def _parse_for_in(self) -> exp.ForIn:
    476            this = self._parse_range()
    477            self._match_text_seq("DO")
    478            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    479
    480        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    481            this = super()._parse_table_part(schema=schema) or self._parse_number()
    482
    483            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    484            if isinstance(this, exp.Identifier):
    485                table_name = this.name
    486                while self._match(TokenType.DASH, advance=False) and self._next:
    487                    text = ""
    488                    while self._is_connected() and self._curr.token_type != TokenType.DOT:
    489                        self._advance()
    490                        text += self._prev.text
    491                    table_name += text
    492
    493                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    494            elif isinstance(this, exp.Literal):
    495                table_name = this.name
    496
    497                if self._is_connected() and self._parse_var(any_token=True):
    498                    table_name += self._prev.text
    499
    500                this = exp.Identifier(this=table_name, quoted=True)
    501
    502            return this
    503
    504        def _parse_table_parts(
    505            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    506        ) -> exp.Table:
    507            table = super()._parse_table_parts(
    508                schema=schema, is_db_reference=is_db_reference, wildcard=True
    509            )
    510
    511            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    512            if not table.catalog:
    513                if table.db:
    514                    parts = table.db.split(".")
    515                    if len(parts) == 2 and not table.args["db"].quoted:
    516                        table.set("catalog", exp.Identifier(this=parts[0]))
    517                        table.set("db", exp.Identifier(this=parts[1]))
    518                else:
    519                    parts = table.name.split(".")
    520                    if len(parts) == 2 and not table.this.quoted:
    521                        table.set("db", exp.Identifier(this=parts[0]))
    522                        table.set("this", exp.Identifier(this=parts[1]))
    523
    524            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    525                catalog, db, this, *rest = (
    526                    exp.to_identifier(p, quoted=True)
    527                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    528                )
    529
    530                if rest and this:
    531                    this = exp.Dot.build([this, *rest])  # type: ignore
    532
    533                table = exp.Table(
    534                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    535                )
    536                table.meta["quoted_table"] = True
    537
    538            return table
    539
    540        def _parse_column(self) -> t.Optional[exp.Expression]:
    541            column = super()._parse_column()
    542            if isinstance(column, exp.Column):
    543                parts = column.parts
    544                if any("." in p.name for p in parts):
    545                    catalog, db, table, this, *rest = (
    546                        exp.to_identifier(p, quoted=True)
    547                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    548                    )
    549
    550                    if rest and this:
    551                        this = exp.Dot.build([this, *rest])  # type: ignore
    552
    553                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    554                    column.meta["quoted_column"] = True
    555
    556            return column
    557
    558        @t.overload
    559        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    560
    561        @t.overload
    562        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    563
    564        def _parse_json_object(self, agg=False):
    565            json_object = super()._parse_json_object()
    566            array_kv_pair = seq_get(json_object.expressions, 0)
    567
    568            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    569            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    570            if (
    571                array_kv_pair
    572                and isinstance(array_kv_pair.this, exp.Array)
    573                and isinstance(array_kv_pair.expression, exp.Array)
    574            ):
    575                keys = array_kv_pair.this.expressions
    576                values = array_kv_pair.expression.expressions
    577
    578                json_object.set(
    579                    "expressions",
    580                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    581                )
    582
    583            return json_object
    584
    585        def _parse_bracket(
    586            self, this: t.Optional[exp.Expression] = None
    587        ) -> t.Optional[exp.Expression]:
    588            bracket = super()._parse_bracket(this)
    589
    590            if this is bracket:
    591                return bracket
    592
    593            if isinstance(bracket, exp.Bracket):
    594                for expression in bracket.expressions:
    595                    name = expression.name.upper()
    596
    597                    if name not in self.BRACKET_OFFSETS:
    598                        break
    599
    600                    offset, safe = self.BRACKET_OFFSETS[name]
    601                    bracket.set("offset", offset)
    602                    bracket.set("safe", safe)
    603                    expression.replace(expression.expressions[0])
    604
    605            return bracket
    606
    607        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    608            unnest = super()._parse_unnest(with_alias=with_alias)
    609
    610            if not unnest:
    611                return None
    612
    613            unnest_expr = seq_get(unnest.expressions, 0)
    614            if unnest_expr:
    615                from sqlglot.optimizer.annotate_types import annotate_types
    616
    617                unnest_expr = annotate_types(unnest_expr)
    618
    619                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    620                # in contrast to other dialects such as DuckDB which flattens only the array by default
    621                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    622                    array_elem.is_type(exp.DataType.Type.STRUCT)
    623                    for array_elem in unnest_expr._type.expressions
    624                ):
    625                    unnest.set("explode_array", True)
    626
    627            return unnest
    628
    629    class Generator(generator.Generator):
    630        INTERVAL_ALLOWS_PLURAL_FORM = False
    631        JOIN_HINTS = False
    632        QUERY_HINTS = False
    633        TABLE_HINTS = False
    634        LIMIT_FETCH = "LIMIT"
    635        RENAME_TABLE_WITH_DB = False
    636        NVL2_SUPPORTED = False
    637        UNNEST_WITH_ORDINALITY = False
    638        COLLATE_IS_FUNC = True
    639        LIMIT_ONLY_LITERALS = True
    640        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    641        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    642        JSON_KEY_VALUE_PAIR_SEP = ","
    643        NULL_ORDERING_SUPPORTED = False
    644        IGNORE_NULLS_IN_FUNC = True
    645        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    646        CAN_IMPLEMENT_ARRAY_ANY = True
    647        SUPPORTS_TO_NUMBER = False
    648        NAMED_PLACEHOLDER_TOKEN = "@"
    649        HEX_FUNC = "TO_HEX"
    650        WITH_PROPERTIES_PREFIX = "OPTIONS"
    651        SUPPORTS_EXPLODING_PROJECTIONS = False
    652        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    653
    654        TRANSFORMS = {
    655            **generator.Generator.TRANSFORMS,
    656            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    657            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    658            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    659            exp.Array: inline_array_unless_query,
    660            exp.ArrayContains: _array_contains_sql,
    661            exp.ArrayFilter: filter_array_using_unnest,
    662            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    663            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    664            exp.CollateProperty: lambda self, e: (
    665                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    666                if e.args.get("default")
    667                else f"COLLATE {self.sql(e, 'this')}"
    668            ),
    669            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    670            exp.CountIf: rename_func("COUNTIF"),
    671            exp.Create: _create_sql,
    672            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    673            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    674            exp.DateDiff: lambda self, e: self.func(
    675                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    676            ),
    677            exp.DateFromParts: rename_func("DATE"),
    678            exp.DateStrToDate: datestrtodate_sql,
    679            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    680            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    681            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    682            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    683            exp.FromTimeZone: lambda self, e: self.func(
    684                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    685            ),
    686            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    687            exp.GroupConcat: rename_func("STRING_AGG"),
    688            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    689            exp.If: if_sql(false_value="NULL"),
    690            exp.ILike: no_ilike_sql,
    691            exp.IntDiv: rename_func("DIV"),
    692            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    693            exp.Max: max_or_greatest,
    694            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    695            exp.MD5Digest: rename_func("MD5"),
    696            exp.Min: min_or_least,
    697            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    698            exp.RegexpExtract: lambda self, e: self.func(
    699                "REGEXP_EXTRACT",
    700                e.this,
    701                e.expression,
    702                e.args.get("position"),
    703                e.args.get("occurrence"),
    704            ),
    705            exp.RegexpReplace: regexp_replace_sql,
    706            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    707            exp.ReturnsProperty: _returnsproperty_sql,
    708            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    709            exp.Select: transforms.preprocess(
    710                [
    711                    transforms.explode_to_unnest(),
    712                    transforms.unqualify_unnest,
    713                    transforms.eliminate_distinct_on,
    714                    _alias_ordered_group,
    715                    transforms.eliminate_semi_and_anti_joins,
    716                ]
    717            ),
    718            exp.SHA: rename_func("SHA1"),
    719            exp.SHA2: sha256_sql,
    720            exp.StabilityProperty: lambda self, e: (
    721                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    722            ),
    723            exp.StrToDate: _str_to_datetime_sql,
    724            exp.StrToTime: _str_to_datetime_sql,
    725            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    726            exp.TimeFromParts: rename_func("TIME"),
    727            exp.TimestampFromParts: rename_func("DATETIME"),
    728            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    729            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    730            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    731            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    732            exp.TimeStrToTime: timestrtotime_sql,
    733            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    734            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    735            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    736            exp.TsOrDsToTime: rename_func("TIME"),
    737            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    738            exp.Unhex: rename_func("FROM_HEX"),
    739            exp.UnixDate: rename_func("UNIX_DATE"),
    740            exp.UnixToTime: _unix_to_time_sql,
    741            exp.Uuid: lambda *_: "GENERATE_UUID()",
    742            exp.Values: _derived_table_values_to_unnest,
    743            exp.VariancePop: rename_func("VAR_POP"),
    744        }
    745
    746        SUPPORTED_JSON_PATH_PARTS = {
    747            exp.JSONPathKey,
    748            exp.JSONPathRoot,
    749            exp.JSONPathSubscript,
    750        }
    751
    752        TYPE_MAPPING = {
    753            **generator.Generator.TYPE_MAPPING,
    754            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    755            exp.DataType.Type.BIGINT: "INT64",
    756            exp.DataType.Type.BINARY: "BYTES",
    757            exp.DataType.Type.BOOLEAN: "BOOL",
    758            exp.DataType.Type.CHAR: "STRING",
    759            exp.DataType.Type.DECIMAL: "NUMERIC",
    760            exp.DataType.Type.DOUBLE: "FLOAT64",
    761            exp.DataType.Type.FLOAT: "FLOAT64",
    762            exp.DataType.Type.INT: "INT64",
    763            exp.DataType.Type.NCHAR: "STRING",
    764            exp.DataType.Type.NVARCHAR: "STRING",
    765            exp.DataType.Type.SMALLINT: "INT64",
    766            exp.DataType.Type.TEXT: "STRING",
    767            exp.DataType.Type.TIMESTAMP: "DATETIME",
    768            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    769            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    770            exp.DataType.Type.TINYINT: "INT64",
    771            exp.DataType.Type.ROWVERSION: "BYTES",
    772            exp.DataType.Type.UUID: "STRING",
    773            exp.DataType.Type.VARBINARY: "BYTES",
    774            exp.DataType.Type.VARCHAR: "STRING",
    775            exp.DataType.Type.VARIANT: "ANY TYPE",
    776        }
    777
    778        PROPERTIES_LOCATION = {
    779            **generator.Generator.PROPERTIES_LOCATION,
    780            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    781            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    782        }
    783
    784        # WINDOW comes after QUALIFY
    785        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    786        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    787            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    788            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    789        }
    790
    791        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    792        RESERVED_KEYWORDS = {
    793            "all",
    794            "and",
    795            "any",
    796            "array",
    797            "as",
    798            "asc",
    799            "assert_rows_modified",
    800            "at",
    801            "between",
    802            "by",
    803            "case",
    804            "cast",
    805            "collate",
    806            "contains",
    807            "create",
    808            "cross",
    809            "cube",
    810            "current",
    811            "default",
    812            "define",
    813            "desc",
    814            "distinct",
    815            "else",
    816            "end",
    817            "enum",
    818            "escape",
    819            "except",
    820            "exclude",
    821            "exists",
    822            "extract",
    823            "false",
    824            "fetch",
    825            "following",
    826            "for",
    827            "from",
    828            "full",
    829            "group",
    830            "grouping",
    831            "groups",
    832            "hash",
    833            "having",
    834            "if",
    835            "ignore",
    836            "in",
    837            "inner",
    838            "intersect",
    839            "interval",
    840            "into",
    841            "is",
    842            "join",
    843            "lateral",
    844            "left",
    845            "like",
    846            "limit",
    847            "lookup",
    848            "merge",
    849            "natural",
    850            "new",
    851            "no",
    852            "not",
    853            "null",
    854            "nulls",
    855            "of",
    856            "on",
    857            "or",
    858            "order",
    859            "outer",
    860            "over",
    861            "partition",
    862            "preceding",
    863            "proto",
    864            "qualify",
    865            "range",
    866            "recursive",
    867            "respect",
    868            "right",
    869            "rollup",
    870            "rows",
    871            "select",
    872            "set",
    873            "some",
    874            "struct",
    875            "tablesample",
    876            "then",
    877            "to",
    878            "treat",
    879            "true",
    880            "unbounded",
    881            "union",
    882            "unnest",
    883            "using",
    884            "when",
    885            "where",
    886            "window",
    887            "with",
    888            "within",
    889        }
    890
    891        def mod_sql(self, expression: exp.Mod) -> str:
    892            this = expression.this
    893            expr = expression.expression
    894            return self.func(
    895                "MOD",
    896                this.unnest() if isinstance(this, exp.Paren) else this,
    897                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    898            )
    899
    900        def column_parts(self, expression: exp.Column) -> str:
    901            if expression.meta.get("quoted_column"):
    902                # If a column reference is of the form `dataset.table`.name, we need
    903                # to preserve the quoted table path, otherwise the reference breaks
    904                table_parts = ".".join(p.name for p in expression.parts[:-1])
    905                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    906                return f"{table_path}.{self.sql(expression, 'this')}"
    907
    908            return super().column_parts(expression)
    909
    910        def table_parts(self, expression: exp.Table) -> str:
    911            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    912            # we need to make sure the correct quoting is used in each case.
    913            #
    914            # For example, if there is a CTE x that clashes with a schema name, then the former will
    915            # return the table y in that schema, whereas the latter will return the CTE's y column:
    916            #
    917            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    918            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    919            if expression.meta.get("quoted_table"):
    920                table_parts = ".".join(p.name for p in expression.parts)
    921                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    922
    923            return super().table_parts(expression)
    924
    925        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    926            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    927                func_name = "FORMAT_DATETIME"
    928            else:
    929                func_name = "FORMAT_DATE"
    930            this = (
    931                expression.this
    932                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    933                else expression
    934            )
    935            return self.func(func_name, self.format_time(expression), this.this)
    936
    937        def eq_sql(self, expression: exp.EQ) -> str:
    938            # Operands of = cannot be NULL in BigQuery
    939            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    940                if not isinstance(expression.parent, exp.Update):
    941                    return "NULL"
    942
    943            return self.binary(expression, "=")
    944
    945        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    946            parent = expression.parent
    947
    948            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    949            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    950            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    951                return self.func(
    952                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    953                )
    954
    955            return super().attimezone_sql(expression)
    956
    957        def trycast_sql(self, expression: exp.TryCast) -> str:
    958            return self.cast_sql(expression, safe_prefix="SAFE_")
    959
    960        def bracket_sql(self, expression: exp.Bracket) -> str:
    961            this = expression.this
    962            expressions = expression.expressions
    963
    964            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    965                arg = expressions[0]
    966                if arg.type is None:
    967                    from sqlglot.optimizer.annotate_types import annotate_types
    968
    969                    arg = annotate_types(arg)
    970
    971                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    972                    # BQ doesn't support bracket syntax with string values for structs
    973                    return f"{self.sql(this)}.{arg.name}"
    974
    975            expressions_sql = self.expressions(expression, flat=True)
    976            offset = expression.args.get("offset")
    977
    978            if offset == 0:
    979                expressions_sql = f"OFFSET({expressions_sql})"
    980            elif offset == 1:
    981                expressions_sql = f"ORDINAL({expressions_sql})"
    982            elif offset is not None:
    983                self.unsupported(f"Unsupported array offset: {offset}")
    984
    985            if expression.args.get("safe"):
    986                expressions_sql = f"SAFE_{expressions_sql}"
    987
    988            return f"{self.sql(this)}[{expressions_sql}]"
    989
    990        def in_unnest_op(self, expression: exp.Unnest) -> str:
    991            return self.sql(expression)
    992
    993        def version_sql(self, expression: exp.Version) -> str:
    994            if expression.name == "TIMESTAMP":
    995                expression.set("this", "SYSTEM_TIME")
    996            return super().version_sql(expression)

logger = <Logger sqlglot (WARNING)>
class BigQuery(sqlglot.dialects.dialect.Dialect): View Source

    251class BigQuery(Dialect):
    252    WEEK_OFFSET = -1
    253    UNNEST_COLUMN_ONLY = True
    254    SUPPORTS_USER_DEFINED_TYPES = False
    255    SUPPORTS_SEMI_ANTI_JOIN = False
    256    LOG_BASE_FIRST = False
    257    HEX_LOWERCASE = True
    258    FORCE_EARLY_ALIAS_REF_EXPANSION = True
    259    EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True
    260
    261    # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#case_sensitivity
    262    NORMALIZATION_STRATEGY = NormalizationStrategy.CASE_INSENSITIVE
    263
    264    # bigquery udfs are case sensitive
    265    NORMALIZE_FUNCTIONS = False
    266
    267    # https://cloud.google.com/bigquery/docs/reference/standard-sql/format-elements#format_elements_date_time
    268    TIME_MAPPING = {
    269        "%D": "%m/%d/%y",
    270        "%E6S": "%S.%f",
    271        "%e": "%-d",
    272    }
    273
    274    FORMAT_MAPPING = {
    275        "DD": "%d",
    276        "MM": "%m",
    277        "MON": "%b",
    278        "MONTH": "%B",
    279        "YYYY": "%Y",
    280        "YY": "%y",
    281        "HH": "%I",
    282        "HH12": "%I",
    283        "HH24": "%H",
    284        "MI": "%M",
    285        "SS": "%S",
    286        "SSSSS": "%f",
    287        "TZH": "%z",
    288    }
    289
    290    # The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement
    291    # https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table
    292    PSEUDOCOLUMNS = {"_PARTITIONTIME", "_PARTITIONDATE"}
    293
    294    # All set operations require either a DISTINCT or ALL specifier
    295    SET_OP_DISTINCT_BY_DEFAULT = dict.fromkeys((exp.Except, exp.Intersect, exp.Union), None)
    296
    297    ANNOTATORS = {
    298        **Dialect.ANNOTATORS,
    299        exp.Sign: lambda self, e: self._annotate_by_args(e, "this"),
    300    }
    301
    302    def normalize_identifier(self, expression: E) -> E:
    303        if (
    304            isinstance(expression, exp.Identifier)
    305            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    306        ):
    307            parent = expression.parent
    308            while isinstance(parent, exp.Dot):
    309                parent = parent.parent
    310
    311            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    312            # by default. The following check uses a heuristic to detect tables based on whether
    313            # they are qualified. This should generally be correct, because tables in BigQuery
    314            # must be qualified with at least a dataset, unless @@dataset_id is set.
    315            case_sensitive = (
    316                isinstance(parent, exp.UserDefinedFunction)
    317                or (
    318                    isinstance(parent, exp.Table)
    319                    and parent.db
    320                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    321                )
    322                or expression.meta.get("is_table")
    323            )
    324            if not case_sensitive:
    325                expression.set("this", expression.this.lower())
    326
    327        return expression
    328
    329    class Tokenizer(tokens.Tokenizer):
    330        QUOTES = ["'", '"', '"""', "'''"]
    331        COMMENTS = ["--", "#", ("/*", "*/")]
    332        IDENTIFIERS = ["`"]
    333        STRING_ESCAPES = ["\\"]
    334
    335        HEX_STRINGS = [("0x", ""), ("0X", "")]
    336
    337        BYTE_STRINGS = [
    338            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    339        ]
    340
    341        RAW_STRINGS = [
    342            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    343        ]
    344
    345        KEYWORDS = {
    346            **tokens.Tokenizer.KEYWORDS,
    347            "ANY TYPE": TokenType.VARIANT,
    348            "BEGIN": TokenType.COMMAND,
    349            "BEGIN TRANSACTION": TokenType.BEGIN,
    350            "BYTEINT": TokenType.INT,
    351            "BYTES": TokenType.BINARY,
    352            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    353            "DATETIME": TokenType.TIMESTAMP,
    354            "DECLARE": TokenType.COMMAND,
    355            "ELSEIF": TokenType.COMMAND,
    356            "EXCEPTION": TokenType.COMMAND,
    357            "FLOAT64": TokenType.DOUBLE,
    358            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    359            "MODEL": TokenType.MODEL,
    360            "NOT DETERMINISTIC": TokenType.VOLATILE,
    361            "RECORD": TokenType.STRUCT,
    362            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    363        }
    364        KEYWORDS.pop("DIV")
    365        KEYWORDS.pop("VALUES")
    366        KEYWORDS.pop("/*+")
    367
    368    class Parser(parser.Parser):
    369        PREFIXED_PIVOT_COLUMNS = True
    370        LOG_DEFAULTS_TO_LN = True
    371        SUPPORTS_IMPLICIT_UNNEST = True
    372
    373        FUNCTIONS = {
    374            **parser.Parser.FUNCTIONS,
    375            "DATE": _build_date,
    376            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    377            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    378            "DATE_TRUNC": lambda args: exp.DateTrunc(
    379                unit=exp.Literal.string(str(seq_get(args, 1))),
    380                this=seq_get(args, 0),
    381            ),
    382            "DATETIME": _build_datetime,
    383            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    384            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    385            "DIV": binary_from_function(exp.IntDiv),
    386            "FORMAT_DATE": lambda args: exp.TimeToStr(
    387                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    388            ),
    389            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    390            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    391                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    392            ),
    393            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    394            "MD5": exp.MD5Digest.from_arg_list,
    395            "TO_HEX": _build_to_hex,
    396            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    397                [seq_get(args, 1), seq_get(args, 0)]
    398            ),
    399            "PARSE_TIMESTAMP": _build_parse_timestamp,
    400            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    401            "REGEXP_EXTRACT": _build_regexp_extract,
    402            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    403            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    404            "SPLIT": lambda args: exp.Split(
    405                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    406                this=seq_get(args, 0),
    407                expression=seq_get(args, 1) or exp.Literal.string(","),
    408            ),
    409            "TIME": _build_time,
    410            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    411            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    412            "TIMESTAMP": _build_timestamp,
    413            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    414            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    415            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    416                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    417            ),
    418            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    419                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    420            ),
    421            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    422            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    423            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    424                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    425            ),
    426        }
    427
    428        FUNCTION_PARSERS = {
    429            **parser.Parser.FUNCTION_PARSERS,
    430            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    431        }
    432        FUNCTION_PARSERS.pop("TRIM")
    433
    434        NO_PAREN_FUNCTIONS = {
    435            **parser.Parser.NO_PAREN_FUNCTIONS,
    436            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    437        }
    438
    439        NESTED_TYPE_TOKENS = {
    440            *parser.Parser.NESTED_TYPE_TOKENS,
    441            TokenType.TABLE,
    442        }
    443
    444        PROPERTY_PARSERS = {
    445            **parser.Parser.PROPERTY_PARSERS,
    446            "NOT DETERMINISTIC": lambda self: self.expression(
    447                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    448            ),
    449            "OPTIONS": lambda self: self._parse_with_property(),
    450        }
    451
    452        CONSTRAINT_PARSERS = {
    453            **parser.Parser.CONSTRAINT_PARSERS,
    454            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    455        }
    456
    457        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    458        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    459
    460        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    461
    462        STATEMENT_PARSERS = {
    463            **parser.Parser.STATEMENT_PARSERS,
    464            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    465            TokenType.END: lambda self: self._parse_as_command(self._prev),
    466            TokenType.FOR: lambda self: self._parse_for_in(),
    467        }
    468
    469        BRACKET_OFFSETS = {
    470            "OFFSET": (0, False),
    471            "ORDINAL": (1, False),
    472            "SAFE_OFFSET": (0, True),
    473            "SAFE_ORDINAL": (1, True),
    474        }
    475
    476        def _parse_for_in(self) -> exp.ForIn:
    477            this = self._parse_range()
    478            self._match_text_seq("DO")
    479            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    480
    481        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    482            this = super()._parse_table_part(schema=schema) or self._parse_number()
    483
    484            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    485            if isinstance(this, exp.Identifier):
    486                table_name = this.name
    487                while self._match(TokenType.DASH, advance=False) and self._next:
    488                    text = ""
    489                    while self._is_connected() and self._curr.token_type != TokenType.DOT:
    490                        self._advance()
    491                        text += self._prev.text
    492                    table_name += text
    493
    494                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    495            elif isinstance(this, exp.Literal):
    496                table_name = this.name
    497
    498                if self._is_connected() and self._parse_var(any_token=True):
    499                    table_name += self._prev.text
    500
    501                this = exp.Identifier(this=table_name, quoted=True)
    502
    503            return this
    504
    505        def _parse_table_parts(
    506            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    507        ) -> exp.Table:
    508            table = super()._parse_table_parts(
    509                schema=schema, is_db_reference=is_db_reference, wildcard=True
    510            )
    511
    512            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    513            if not table.catalog:
    514                if table.db:
    515                    parts = table.db.split(".")
    516                    if len(parts) == 2 and not table.args["db"].quoted:
    517                        table.set("catalog", exp.Identifier(this=parts[0]))
    518                        table.set("db", exp.Identifier(this=parts[1]))
    519                else:
    520                    parts = table.name.split(".")
    521                    if len(parts) == 2 and not table.this.quoted:
    522                        table.set("db", exp.Identifier(this=parts[0]))
    523                        table.set("this", exp.Identifier(this=parts[1]))
    524
    525            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    526                catalog, db, this, *rest = (
    527                    exp.to_identifier(p, quoted=True)
    528                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    529                )
    530
    531                if rest and this:
    532                    this = exp.Dot.build([this, *rest])  # type: ignore
    533
    534                table = exp.Table(
    535                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    536                )
    537                table.meta["quoted_table"] = True
    538
    539            return table
    540
    541        def _parse_column(self) -> t.Optional[exp.Expression]:
    542            column = super()._parse_column()
    543            if isinstance(column, exp.Column):
    544                parts = column.parts
    545                if any("." in p.name for p in parts):
    546                    catalog, db, table, this, *rest = (
    547                        exp.to_identifier(p, quoted=True)
    548                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    549                    )
    550
    551                    if rest and this:
    552                        this = exp.Dot.build([this, *rest])  # type: ignore
    553
    554                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    555                    column.meta["quoted_column"] = True
    556
    557            return column
    558
    559        @t.overload
    560        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    561
    562        @t.overload
    563        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    564
    565        def _parse_json_object(self, agg=False):
    566            json_object = super()._parse_json_object()
    567            array_kv_pair = seq_get(json_object.expressions, 0)
    568
    569            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    570            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    571            if (
    572                array_kv_pair
    573                and isinstance(array_kv_pair.this, exp.Array)
    574                and isinstance(array_kv_pair.expression, exp.Array)
    575            ):
    576                keys = array_kv_pair.this.expressions
    577                values = array_kv_pair.expression.expressions
    578
    579                json_object.set(
    580                    "expressions",
    581                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    582                )
    583
    584            return json_object
    585
    586        def _parse_bracket(
    587            self, this: t.Optional[exp.Expression] = None
    588        ) -> t.Optional[exp.Expression]:
    589            bracket = super()._parse_bracket(this)
    590
    591            if this is bracket:
    592                return bracket
    593
    594            if isinstance(bracket, exp.Bracket):
    595                for expression in bracket.expressions:
    596                    name = expression.name.upper()
    597
    598                    if name not in self.BRACKET_OFFSETS:
    599                        break
    600
    601                    offset, safe = self.BRACKET_OFFSETS[name]
    602                    bracket.set("offset", offset)
    603                    bracket.set("safe", safe)
    604                    expression.replace(expression.expressions[0])
    605
    606            return bracket
    607
    608        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    609            unnest = super()._parse_unnest(with_alias=with_alias)
    610
    611            if not unnest:
    612                return None
    613
    614            unnest_expr = seq_get(unnest.expressions, 0)
    615            if unnest_expr:
    616                from sqlglot.optimizer.annotate_types import annotate_types
    617
    618                unnest_expr = annotate_types(unnest_expr)
    619
    620                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    621                # in contrast to other dialects such as DuckDB which flattens only the array by default
    622                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    623                    array_elem.is_type(exp.DataType.Type.STRUCT)
    624                    for array_elem in unnest_expr._type.expressions
    625                ):
    626                    unnest.set("explode_array", True)
    627
    628            return unnest
    629
    630    class Generator(generator.Generator):
    631        INTERVAL_ALLOWS_PLURAL_FORM = False
    632        JOIN_HINTS = False
    633        QUERY_HINTS = False
    634        TABLE_HINTS = False
    635        LIMIT_FETCH = "LIMIT"
    636        RENAME_TABLE_WITH_DB = False
    637        NVL2_SUPPORTED = False
    638        UNNEST_WITH_ORDINALITY = False
    639        COLLATE_IS_FUNC = True
    640        LIMIT_ONLY_LITERALS = True
    641        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    642        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    643        JSON_KEY_VALUE_PAIR_SEP = ","
    644        NULL_ORDERING_SUPPORTED = False
    645        IGNORE_NULLS_IN_FUNC = True
    646        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    647        CAN_IMPLEMENT_ARRAY_ANY = True
    648        SUPPORTS_TO_NUMBER = False
    649        NAMED_PLACEHOLDER_TOKEN = "@"
    650        HEX_FUNC = "TO_HEX"
    651        WITH_PROPERTIES_PREFIX = "OPTIONS"
    652        SUPPORTS_EXPLODING_PROJECTIONS = False
    653        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    654
    655        TRANSFORMS = {
    656            **generator.Generator.TRANSFORMS,
    657            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    658            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    659            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    660            exp.Array: inline_array_unless_query,
    661            exp.ArrayContains: _array_contains_sql,
    662            exp.ArrayFilter: filter_array_using_unnest,
    663            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    664            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    665            exp.CollateProperty: lambda self, e: (
    666                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    667                if e.args.get("default")
    668                else f"COLLATE {self.sql(e, 'this')}"
    669            ),
    670            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    671            exp.CountIf: rename_func("COUNTIF"),
    672            exp.Create: _create_sql,
    673            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    674            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    675            exp.DateDiff: lambda self, e: self.func(
    676                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    677            ),
    678            exp.DateFromParts: rename_func("DATE"),
    679            exp.DateStrToDate: datestrtodate_sql,
    680            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    681            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    682            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    683            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    684            exp.FromTimeZone: lambda self, e: self.func(
    685                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    686            ),
    687            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    688            exp.GroupConcat: rename_func("STRING_AGG"),
    689            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    690            exp.If: if_sql(false_value="NULL"),
    691            exp.ILike: no_ilike_sql,
    692            exp.IntDiv: rename_func("DIV"),
    693            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    694            exp.Max: max_or_greatest,
    695            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    696            exp.MD5Digest: rename_func("MD5"),
    697            exp.Min: min_or_least,
    698            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    699            exp.RegexpExtract: lambda self, e: self.func(
    700                "REGEXP_EXTRACT",
    701                e.this,
    702                e.expression,
    703                e.args.get("position"),
    704                e.args.get("occurrence"),
    705            ),
    706            exp.RegexpReplace: regexp_replace_sql,
    707            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    708            exp.ReturnsProperty: _returnsproperty_sql,
    709            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    710            exp.Select: transforms.preprocess(
    711                [
    712                    transforms.explode_to_unnest(),
    713                    transforms.unqualify_unnest,
    714                    transforms.eliminate_distinct_on,
    715                    _alias_ordered_group,
    716                    transforms.eliminate_semi_and_anti_joins,
    717                ]
    718            ),
    719            exp.SHA: rename_func("SHA1"),
    720            exp.SHA2: sha256_sql,
    721            exp.StabilityProperty: lambda self, e: (
    722                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    723            ),
    724            exp.StrToDate: _str_to_datetime_sql,
    725            exp.StrToTime: _str_to_datetime_sql,
    726            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    727            exp.TimeFromParts: rename_func("TIME"),
    728            exp.TimestampFromParts: rename_func("DATETIME"),
    729            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    730            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    731            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    732            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    733            exp.TimeStrToTime: timestrtotime_sql,
    734            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    735            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    736            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    737            exp.TsOrDsToTime: rename_func("TIME"),
    738            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    739            exp.Unhex: rename_func("FROM_HEX"),
    740            exp.UnixDate: rename_func("UNIX_DATE"),
    741            exp.UnixToTime: _unix_to_time_sql,
    742            exp.Uuid: lambda *_: "GENERATE_UUID()",
    743            exp.Values: _derived_table_values_to_unnest,
    744            exp.VariancePop: rename_func("VAR_POP"),
    745        }
    746
    747        SUPPORTED_JSON_PATH_PARTS = {
    748            exp.JSONPathKey,
    749            exp.JSONPathRoot,
    750            exp.JSONPathSubscript,
    751        }
    752
    753        TYPE_MAPPING = {
    754            **generator.Generator.TYPE_MAPPING,
    755            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    756            exp.DataType.Type.BIGINT: "INT64",
    757            exp.DataType.Type.BINARY: "BYTES",
    758            exp.DataType.Type.BOOLEAN: "BOOL",
    759            exp.DataType.Type.CHAR: "STRING",
    760            exp.DataType.Type.DECIMAL: "NUMERIC",
    761            exp.DataType.Type.DOUBLE: "FLOAT64",
    762            exp.DataType.Type.FLOAT: "FLOAT64",
    763            exp.DataType.Type.INT: "INT64",
    764            exp.DataType.Type.NCHAR: "STRING",
    765            exp.DataType.Type.NVARCHAR: "STRING",
    766            exp.DataType.Type.SMALLINT: "INT64",
    767            exp.DataType.Type.TEXT: "STRING",
    768            exp.DataType.Type.TIMESTAMP: "DATETIME",
    769            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    770            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    771            exp.DataType.Type.TINYINT: "INT64",
    772            exp.DataType.Type.ROWVERSION: "BYTES",
    773            exp.DataType.Type.UUID: "STRING",
    774            exp.DataType.Type.VARBINARY: "BYTES",
    775            exp.DataType.Type.VARCHAR: "STRING",
    776            exp.DataType.Type.VARIANT: "ANY TYPE",
    777        }
    778
    779        PROPERTIES_LOCATION = {
    780            **generator.Generator.PROPERTIES_LOCATION,
    781            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    782            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    783        }
    784
    785        # WINDOW comes after QUALIFY
    786        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    787        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    788            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    789            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    790        }
    791
    792        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    793        RESERVED_KEYWORDS = {
    794            "all",
    795            "and",
    796            "any",
    797            "array",
    798            "as",
    799            "asc",
    800            "assert_rows_modified",
    801            "at",
    802            "between",
    803            "by",
    804            "case",
    805            "cast",
    806            "collate",
    807            "contains",
    808            "create",
    809            "cross",
    810            "cube",
    811            "current",
    812            "default",
    813            "define",
    814            "desc",
    815            "distinct",
    816            "else",
    817            "end",
    818            "enum",
    819            "escape",
    820            "except",
    821            "exclude",
    822            "exists",
    823            "extract",
    824            "false",
    825            "fetch",
    826            "following",
    827            "for",
    828            "from",
    829            "full",
    830            "group",
    831            "grouping",
    832            "groups",
    833            "hash",
    834            "having",
    835            "if",
    836            "ignore",
    837            "in",
    838            "inner",
    839            "intersect",
    840            "interval",
    841            "into",
    842            "is",
    843            "join",
    844            "lateral",
    845            "left",
    846            "like",
    847            "limit",
    848            "lookup",
    849            "merge",
    850            "natural",
    851            "new",
    852            "no",
    853            "not",
    854            "null",
    855            "nulls",
    856            "of",
    857            "on",
    858            "or",
    859            "order",
    860            "outer",
    861            "over",
    862            "partition",
    863            "preceding",
    864            "proto",
    865            "qualify",
    866            "range",
    867            "recursive",
    868            "respect",
    869            "right",
    870            "rollup",
    871            "rows",
    872            "select",
    873            "set",
    874            "some",
    875            "struct",
    876            "tablesample",
    877            "then",
    878            "to",
    879            "treat",
    880            "true",
    881            "unbounded",
    882            "union",
    883            "unnest",
    884            "using",
    885            "when",
    886            "where",
    887            "window",
    888            "with",
    889            "within",
    890        }
    891
    892        def mod_sql(self, expression: exp.Mod) -> str:
    893            this = expression.this
    894            expr = expression.expression
    895            return self.func(
    896                "MOD",
    897                this.unnest() if isinstance(this, exp.Paren) else this,
    898                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    899            )
    900
    901        def column_parts(self, expression: exp.Column) -> str:
    902            if expression.meta.get("quoted_column"):
    903                # If a column reference is of the form `dataset.table`.name, we need
    904                # to preserve the quoted table path, otherwise the reference breaks
    905                table_parts = ".".join(p.name for p in expression.parts[:-1])
    906                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    907                return f"{table_path}.{self.sql(expression, 'this')}"
    908
    909            return super().column_parts(expression)
    910
    911        def table_parts(self, expression: exp.Table) -> str:
    912            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    913            # we need to make sure the correct quoting is used in each case.
    914            #
    915            # For example, if there is a CTE x that clashes with a schema name, then the former will
    916            # return the table y in that schema, whereas the latter will return the CTE's y column:
    917            #
    918            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    919            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    920            if expression.meta.get("quoted_table"):
    921                table_parts = ".".join(p.name for p in expression.parts)
    922                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    923
    924            return super().table_parts(expression)
    925
    926        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    927            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    928                func_name = "FORMAT_DATETIME"
    929            else:
    930                func_name = "FORMAT_DATE"
    931            this = (
    932                expression.this
    933                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    934                else expression
    935            )
    936            return self.func(func_name, self.format_time(expression), this.this)
    937
    938        def eq_sql(self, expression: exp.EQ) -> str:
    939            # Operands of = cannot be NULL in BigQuery
    940            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    941                if not isinstance(expression.parent, exp.Update):
    942                    return "NULL"
    943
    944            return self.binary(expression, "=")
    945
    946        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    947            parent = expression.parent
    948
    949            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    950            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    951            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    952                return self.func(
    953                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    954                )
    955
    956            return super().attimezone_sql(expression)
    957
    958        def trycast_sql(self, expression: exp.TryCast) -> str:
    959            return self.cast_sql(expression, safe_prefix="SAFE_")
    960
    961        def bracket_sql(self, expression: exp.Bracket) -> str:
    962            this = expression.this
    963            expressions = expression.expressions
    964
    965            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    966                arg = expressions[0]
    967                if arg.type is None:
    968                    from sqlglot.optimizer.annotate_types import annotate_types
    969
    970                    arg = annotate_types(arg)
    971
    972                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    973                    # BQ doesn't support bracket syntax with string values for structs
    974                    return f"{self.sql(this)}.{arg.name}"
    975
    976            expressions_sql = self.expressions(expression, flat=True)
    977            offset = expression.args.get("offset")
    978
    979            if offset == 0:
    980                expressions_sql = f"OFFSET({expressions_sql})"
    981            elif offset == 1:
    982                expressions_sql = f"ORDINAL({expressions_sql})"
    983            elif offset is not None:
    984                self.unsupported(f"Unsupported array offset: {offset}")
    985
    986            if expression.args.get("safe"):
    987                expressions_sql = f"SAFE_{expressions_sql}"
    988
    989            return f"{self.sql(this)}[{expressions_sql}]"
    990
    991        def in_unnest_op(self, expression: exp.Unnest) -> str:
    992            return self.sql(expression)
    993
    994        def version_sql(self, expression: exp.Version) -> str:
    995            if expression.name == "TIMESTAMP":
    996                expression.set("this", "SYSTEM_TIME")
    997            return super().version_sql(expression)

WEEK_OFFSET = -1

First day of the week in DATE_TRUNC(week). Defaults to 0 (Monday). -1 would be Sunday.

UNNEST_COLUMN_ONLY = True

Whether `UNNEST` table aliases are treated as column aliases.

SUPPORTS_USER_DEFINED_TYPES = False

Whether user-defined data types are supported.

SUPPORTS_SEMI_ANTI_JOIN = False

Whether `SEMI` or `ANTI` joins are supported.

LOG_BASE_FIRST: Optional[bool] = False

Whether the base comes first in the `LOG` function. Possible values: `True`, `False`, `None` (two arguments are not supported by `LOG`)

HEX_LOWERCASE = True

Whether the `HEX` function returns a lowercase hexadecimal string.

FORCE_EARLY_ALIAS_REF_EXPANSION = True

Whether alias reference expansion (_expand_alias_refs()) should run before column qualification (_qualify_columns()).

###### For example:

> WITH data AS ( SELECT 1 AS id, 2 AS my_id ) SELECT id AS my_id FROM data WHERE my_id = 1 GROUP BY my_id, HAVING my_id = 1

In most dialects, "my_id" would refer to "data.my_id" across the query, except: - BigQuery, which will forward the alias to GROUP BY + HAVING clauses i.e it resolves to "WHERE my_id = 1 GROUP BY id HAVING id = 1" - Clickhouse, which will forward the alias across the query i.e it resolves to "WHERE id = 1 GROUP BY id HAVING id = 1"

EXPAND_ALIAS_REFS_EARLY_ONLY_IN_GROUP_BY = True

Whether alias reference expansion before qualification should only happen for the GROUP BY clause.

NORMALIZATION_STRATEGY = <NormalizationStrategy.CASE_INSENSITIVE: 'CASE_INSENSITIVE'>

Specifies the strategy according to which identifiers should be normalized.

NORMALIZE_FUNCTIONS: bool | str = False

Determines how function names are going to be normalized.

###### Possible values:

> "upper" or True: Convert names to uppercase. "lower": Convert names to lowercase. False: Disables function name normalization.

TIME_MAPPING: Dict[str, str] = {'%D': '%m/%d/%y', '%E6S': '%S.%f', '%e': '%-d'}

Associates this dialect's time formats with their equivalent Python `strftime` formats.

FORMAT_MAPPING: Dict[str, str] = {'DD': '%d', 'MM': '%m', 'MON': '%b', 'MONTH': '%B', 'YYYY': '%Y', 'YY': '%y', 'HH': '%I', 'HH12': '%I', 'HH24': '%H', 'MI': '%M', 'SS': '%S', 'SSSSS': '%f', 'TZH': '%z'}

Helper which is used for parsing the special syntax `CAST(x AS DATE FORMAT 'yyyy')`. If empty, the corresponding trie will be constructed off of `TIME_MAPPING`.

PSEUDOCOLUMNS: Set[str] = {'_PARTITIONDATE', '_PARTITIONTIME'}

Columns that are auto-generated by the engine corresponding to this dialect. For example, such columns may be excluded from `SELECT *` queries.

SET_OP_DISTINCT_BY_DEFAULT: Dict[Type[sqlglot.expressions.Expression], Optional[bool]] = {<class 'sqlglot.expressions.Except'>: None, <class 'sqlglot.expressions.Intersect'>: None, <class 'sqlglot.expressions.Union'>: None}

Whether a set operation uses DISTINCT by default. This is `None` when either `DISTINCT` or `ALL` must be explicitly specified.

ANNOTATORS: Dict[Type[~E], Callable[[sqlglot.optimizer.annotate_types.TypeAnnotator, ~E], ~E]] = {<class 'sqlglot.expressions.Alias'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseNot'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Neg'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Not'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Paren'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.PivotAlias'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Unary'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Add'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.And'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayContains'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayContainsAll'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayOverlaps'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Binary'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseAnd'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseLeftShift'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseOr'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseRightShift'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseXor'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Collate'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Connector'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Corr'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.CovarPop'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.CovarSamp'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.DPipe'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Distance'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Div'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Dot'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.EQ'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Escape'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.GT'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.GTE'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Glob'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ILike'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ILikeAny'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.IntDiv'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Is'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONArrayContains'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBContains'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBExtract'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBExtractScalar'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONExtract'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONExtractScalar'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Kwarg'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LT'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LTE'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Like'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LikeAny'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Mod'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Mul'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NEQ'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NullSafeEQ'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NullSafeNEQ'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Operator'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Or'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Overlaps'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Pow'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.PropertyEQ'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.RegexpILike'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.RegexpLike'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.SimilarTo'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Slice'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Sub'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Xor'>: <function Dialect.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ApproxDistinct'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Length'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ArraySize'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Between'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Boolean'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.In'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Date'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeStrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateStrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateFromParts'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DiToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Datetime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentDatetime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.VariancePop'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StddevPop'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Variance'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Avg'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.SafeDivide'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Stddev'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Round'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ApproxQuantile'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Sqrt'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Exp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Quantile'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Log'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Ln'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StddevSamp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Levenshtein'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDiToDi'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrPosition'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Ceil'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateToDi'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Sign'>: <function BigQuery.<lambda>>, <class 'sqlglot.expressions.DateDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ParseJSON'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Time'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeStrToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentTimestamp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Day'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Year'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Quarter'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Week'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Month'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Concat'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ArrayConcat'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Upper'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Lower'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Substring'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateToDateStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeToTimeStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToDateStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeToStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTimeStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Initcap'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ConcatWs'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Trim'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Abs'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Anonymous'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Array'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.ArrayAgg'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Bracket'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Cast'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Case'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Coalesce'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Count'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.DataType'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.DateAdd'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.DateSub'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.DateTrunc'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Distinct'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Explode'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Extract'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Filter'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.GenerateDateArray'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.GenerateTimestampArray'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Greatest'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.If'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Interval'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Least'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Literal'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Map'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Max'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Min'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Null'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Nullif'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Struct'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Sum'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Timestamp'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.ToMap'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.TryCast'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.Unnest'>: <function Dialect.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function Dialect.<lambda>>}
def normalize_identifier(self, expression: ~E) -> ~E: View Source

    302    def normalize_identifier(self, expression: E) -> E:
    303        if (
    304            isinstance(expression, exp.Identifier)
    305            and self.normalization_strategy is not NormalizationStrategy.CASE_SENSITIVE
    306        ):
    307            parent = expression.parent
    308            while isinstance(parent, exp.Dot):
    309                parent = parent.parent
    310
    311            # In BigQuery, CTEs are case-insensitive, but UDF and table names are case-sensitive
    312            # by default. The following check uses a heuristic to detect tables based on whether
    313            # they are qualified. This should generally be correct, because tables in BigQuery
    314            # must be qualified with at least a dataset, unless @@dataset_id is set.
    315            case_sensitive = (
    316                isinstance(parent, exp.UserDefinedFunction)
    317                or (
    318                    isinstance(parent, exp.Table)
    319                    and parent.db
    320                    and (parent.meta.get("quoted_table") or not parent.meta.get("maybe_column"))
    321                )
    322                or expression.meta.get("is_table")
    323            )
    324            if not case_sensitive:
    325                expression.set("this", expression.this.lower())
    326
    327        return expression

Transforms an identifier in a way that resembles how it'd be resolved by this dialect.

For example, an identifier like `FoO` would be resolved as `foo` in Postgres, because it lowercases all unquoted identifiers. On the other hand, Snowflake uppercases them, so it would resolve it as `FOO`. If it was quoted, it'd need to be treated as case-sensitive, and so any normalization would be prohibited in order to avoid "breaking" the identifier.

There are also dialects like Spark, which are case-insensitive even when quotes are present, and dialects like MySQL, whose resolution rules match those employed by the underlying operating system, for example they may always be case-sensitive in Linux.

Finally, the normalization behavior of some engines can even be controlled through flags, like in Redshift's case, where users can explicitly set enable_case_sensitive_identifier.

SQLGlot aims to understand and handle all of these different behaviors gracefully, so that it can analyze queries in the optimizer and successfully capture their semantics.

SUPPORTS_COLUMN_JOIN_MARKS = False

Whether the old-style outer join (+) syntax is supported.

UNESCAPED_SEQUENCES: Dict[str, str] = {'\\a': '\x07', '\\b': '\x08', '\\f': '\x0c', '\\n': '\n', '\\r': '\r', '\\t': '\t', '\\v': '\x0b', '\\\\': '\\'}

Mapping of an escaped sequence (`\n`) to its unescaped version (`` ).

tokenizer_class = <class 'BigQuery.Tokenizer'>
jsonpath_tokenizer_class = <class 'sqlglot.tokens.JSONPathTokenizer'>
parser_class = <class 'BigQuery.Parser'>
generator_class = <class 'BigQuery.Generator'>
TIME_TRIE: Dict = {'%': {'D': {0: True}, 'E': {'6': {'S': {0: True}}}, 'e': {0: True}}}
FORMAT_TRIE: Dict = {'D': {'D': {0: True}}, 'M': {'M': {0: True}, 'O': {'N': {0: True, 'T': {'H': {0: True}}}}, 'I': {0: True}}, 'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'H': {'H': {0: True, '1': {'2': {0: True}}, '2': {'4': {0: True}}}}, 'S': {'S': {0: True, 'S': {'S': {'S': {0: True}}}}}, 'T': {'Z': {'H': {0: True}}}}
INVERSE_TIME_MAPPING: Dict[str, str] = {'%m/%d/%y': '%D', '%S.%f': '%E6S', '%-d': '%e'}
INVERSE_TIME_TRIE: Dict = {'%': {'m': {'/': {'%': {'d': {'/': {'%': {'y': {0: True}}}}}}}, 'S': {'.': {'%': {'f': {0: True}}}}, '-': {'d': {0: True}}}}
INVERSE_FORMAT_MAPPING: Dict[str, str] = {'%d': 'DD', '%m': 'MM', '%b': 'MON', '%B': 'MONTH', '%Y': 'YYYY', '%y': 'YY', '%I': 'HH12', '%H': 'HH24', '%M': 'MI', '%S': 'SS', '%f': 'SSSSS', '%z': 'TZH'}
INVERSE_FORMAT_TRIE: Dict = {'%': {'d': {0: True}, 'm': {0: True}, 'b': {0: True}, 'B': {0: True}, 'Y': {0: True}, 'y': {0: True}, 'I': {0: True}, 'H': {0: True}, 'M': {0: True}, 'S': {0: True}, 'f': {0: True}, 'z': {0: True}}}
INVERSE_CREATABLE_KIND_MAPPING: dict[str, str] = {}
ESCAPED_SEQUENCES: Dict[str, str] = {'\x07': '\\a', '\x08': '\\b', '\x0c': '\\f', '\n': '\\n', '\r': '\\r', '\t': '\\t', '\x0b': '\\v', '\\': '\\\\'}
QUOTE_START = "'"
QUOTE_END = "'"
IDENTIFIER_START = '`'
IDENTIFIER_END = '`'
BIT_START: Optional[str] = None
BIT_END: Optional[str] = None
HEX_START: Optional[str] = '0x'
HEX_END: Optional[str] = ''
BYTE_START: Optional[str] = "b'"
BYTE_END: Optional[str] = "'"
UNICODE_START: Optional[str] = None
UNICODE_END: Optional[str] = None

##### Inherited Members

sqlglot.dialects.dialect.Dialect
  Dialect
  INDEX_OFFSET
  ALIAS_POST_TABLESAMPLE
  TABLESAMPLE_SIZE_IS_PERCENT
  IDENTIFIERS_CAN_START_WITH_DIGIT
  DPIPE_IS_STRING_CONCAT
  STRICT_STRING_CONCAT
  COPY_PARAMS_ARE_CSV
  NULL_ORDERING
  TYPED_DIVISION
  SAFE_DIVISION
  CONCAT_COALESCE
  DATE_FORMAT
  DATEINT_FORMAT
  TIME_FORMAT
  PREFER_CTE_ALIAS_COLUMN
  SUPPORTS_ORDER_BY_ALL
  HAS_DISTINCT_ARRAY_CONSTRUCTORS
  SUPPORTS_FIXED_SIZE_ARRAYS
  STRICT_JSON_PATH_SYNTAX
  ON_CONDITION_EMPTY_BEFORE_ERROR
  ARRAY_AGG_INCLUDES_NULLS
  REGEXP_EXTRACT_DEFAULT_GROUP
  CREATABLE_KIND_MAPPING
  DATE_PART_MAPPING
  TYPE_TO_EXPRESSIONS
  get_or_raise
  format_time
  settings
  case_sensitive
  can_identify
  quote_identifier
  to_json_path
  parse
  parse_into
  generate
  transpile
  tokenize
  tokenizer
  jsonpath_tokenizer
  parser
  generator

class BigQuery.Tokenizer(sqlglot.tokens.Tokenizer): View Source

    329    class Tokenizer(tokens.Tokenizer):
    330        QUOTES = ["'", '"', '"""', "'''"]
    331        COMMENTS = ["--", "#", ("/*", "*/")]
    332        IDENTIFIERS = ["`"]
    333        STRING_ESCAPES = ["\\"]
    334
    335        HEX_STRINGS = [("0x", ""), ("0X", "")]
    336
    337        BYTE_STRINGS = [
    338            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("b", "B")
    339        ]
    340
    341        RAW_STRINGS = [
    342            (prefix + q, q) for q in t.cast(t.List[str], QUOTES) for prefix in ("r", "R")
    343        ]
    344
    345        KEYWORDS = {
    346            **tokens.Tokenizer.KEYWORDS,
    347            "ANY TYPE": TokenType.VARIANT,
    348            "BEGIN": TokenType.COMMAND,
    349            "BEGIN TRANSACTION": TokenType.BEGIN,
    350            "BYTEINT": TokenType.INT,
    351            "BYTES": TokenType.BINARY,
    352            "CURRENT_DATETIME": TokenType.CURRENT_DATETIME,
    353            "DATETIME": TokenType.TIMESTAMP,
    354            "DECLARE": TokenType.COMMAND,
    355            "ELSEIF": TokenType.COMMAND,
    356            "EXCEPTION": TokenType.COMMAND,
    357            "FLOAT64": TokenType.DOUBLE,
    358            "FOR SYSTEM_TIME": TokenType.TIMESTAMP_SNAPSHOT,
    359            "MODEL": TokenType.MODEL,
    360            "NOT DETERMINISTIC": TokenType.VOLATILE,
    361            "RECORD": TokenType.STRUCT,
    362            "TIMESTAMP": TokenType.TIMESTAMPTZ,
    363        }
    364        KEYWORDS.pop("DIV")
    365        KEYWORDS.pop("VALUES")
    366        KEYWORDS.pop("/*+")

QUOTES = ["'", '"', '"""', "'''"]
COMMENTS = ['--', '#', ('/*', '*/')]
IDENTIFIERS = ['`']
STRING_ESCAPES = ['\\']
HEX_STRINGS = [('0x', ''), ('0X', '')]
BYTE_STRINGS = [("b'", "'"), ("B'", "'"), ('b"', '"'), ('B"', '"'), ('b"""', '"""'), ('B"""', '"""'), ("b'''", "'''"), ("B'''", "'''")]
RAW_STRINGS = [("r'", "'"), ("R'", "'"), ('r"', '"'), ('R"', '"'), ('r"""', '"""'), ('R"""', '"""'), ("r'''", "'''"), ("R'''", "'''")]
KEYWORDS = {'{%': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%-': <TokenType.BLOCK_START: 'BLOCK_START'>, '%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '+%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '{{+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{{-': <TokenType.BLOCK_START: 'BLOCK_START'>, '+}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '==': <TokenType.EQ: 'EQ'>, '::': <TokenType.DCOLON: 'DCOLON'>, '||': <TokenType.DPIPE: 'DPIPE'>, '>=': <TokenType.GTE: 'GTE'>, '<=': <TokenType.LTE: 'LTE'>, '<>': <TokenType.NEQ: 'NEQ'>, '!=': <TokenType.NEQ: 'NEQ'>, ':=': <TokenType.COLON_EQ: 'COLON_EQ'>, '<=>': <TokenType.NULLSAFE_EQ: 'NULLSAFE_EQ'>, '->': <TokenType.ARROW: 'ARROW'>, '->>': <TokenType.DARROW: 'DARROW'>, '=>': <TokenType.FARROW: 'FARROW'>, '#>': <TokenType.HASH_ARROW: 'HASH_ARROW'>, '#>>': <TokenType.DHASH_ARROW: 'DHASH_ARROW'>, '<->': <TokenType.LR_ARROW: 'LR_ARROW'>, '&&': <TokenType.DAMP: 'DAMP'>, '??': <TokenType.DQMARK: 'DQMARK'>, '~~~': <TokenType.GLOB: 'GLOB'>, '~~': <TokenType.LIKE: 'LIKE'>, '~~*': <TokenType.ILIKE: 'ILIKE'>, '~*': <TokenType.IRLIKE: 'IRLIKE'>, 'ALL': <TokenType.ALL: 'ALL'>, 'ALWAYS': <TokenType.ALWAYS: 'ALWAYS'>, 'AND': <TokenType.AND: 'AND'>, 'ANTI': <TokenType.ANTI: 'ANTI'>, 'ANY': <TokenType.ANY: 'ANY'>, 'ASC': <TokenType.ASC: 'ASC'>, 'AS': <TokenType.ALIAS: 'ALIAS'>, 'ASOF': <TokenType.ASOF: 'ASOF'>, 'AUTOINCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'AUTO_INCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'BEGIN': <TokenType.COMMAND: 'COMMAND'>, 'BETWEEN': <TokenType.BETWEEN: 'BETWEEN'>, 'CACHE': <TokenType.CACHE: 'CACHE'>, 'UNCACHE': <TokenType.UNCACHE: 'UNCACHE'>, 'CASE': <TokenType.CASE: 'CASE'>, 'CHARACTER SET': <TokenType.CHARACTER_SET: 'CHARACTER_SET'>, 'CLUSTER BY': <TokenType.CLUSTER_BY: 'CLUSTER_BY'>, 'COLLATE': <TokenType.COLLATE: 'COLLATE'>, 'COLUMN': <TokenType.COLUMN: 'COLUMN'>, 'COMMIT': <TokenType.COMMIT: 'COMMIT'>, 'CONNECT BY': <TokenType.CONNECT_BY: 'CONNECT_BY'>, 'CONSTRAINT': <TokenType.CONSTRAINT: 'CONSTRAINT'>, 'COPY': <TokenType.COPY: 'COPY'>, 'CREATE': <TokenType.CREATE: 'CREATE'>, 'CROSS': <TokenType.CROSS: 'CROSS'>, 'CUBE': <TokenType.CUBE: 'CUBE'>, 'CURRENT_DATE': <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, 'CURRENT_TIME': <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, 'CURRENT_TIMESTAMP': <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, 'CURRENT_USER': <TokenType.CURRENT_USER: 'CURRENT_USER'>, 'DATABASE': <TokenType.DATABASE: 'DATABASE'>, 'DEFAULT': <TokenType.DEFAULT: 'DEFAULT'>, 'DELETE': <TokenType.DELETE: 'DELETE'>, 'DESC': <TokenType.DESC: 'DESC'>, 'DESCRIBE': <TokenType.DESCRIBE: 'DESCRIBE'>, 'DISTINCT': <TokenType.DISTINCT: 'DISTINCT'>, 'DISTRIBUTE BY': <TokenType.DISTRIBUTE_BY: 'DISTRIBUTE_BY'>, 'DROP': <TokenType.DROP: 'DROP'>, 'ELSE': <TokenType.ELSE: 'ELSE'>, 'END': <TokenType.END: 'END'>, 'ENUM': <TokenType.ENUM: 'ENUM'>, 'ESCAPE': <TokenType.ESCAPE: 'ESCAPE'>, 'EXCEPT': <TokenType.EXCEPT: 'EXCEPT'>, 'EXECUTE': <TokenType.EXECUTE: 'EXECUTE'>, 'EXISTS': <TokenType.EXISTS: 'EXISTS'>, 'FALSE': <TokenType.FALSE: 'FALSE'>, 'FETCH': <TokenType.FETCH: 'FETCH'>, 'FILTER': <TokenType.FILTER: 'FILTER'>, 'FIRST': <TokenType.FIRST: 'FIRST'>, 'FULL': <TokenType.FULL: 'FULL'>, 'FUNCTION': <TokenType.FUNCTION: 'FUNCTION'>, 'FOR': <TokenType.FOR: 'FOR'>, 'FOREIGN KEY': <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, 'FORMAT': <TokenType.FORMAT: 'FORMAT'>, 'FROM': <TokenType.FROM: 'FROM'>, 'GEOGRAPHY': <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, 'GEOMETRY': <TokenType.GEOMETRY: 'GEOMETRY'>, 'GLOB': <TokenType.GLOB: 'GLOB'>, 'GROUP BY': <TokenType.GROUP_BY: 'GROUP_BY'>, 'GROUPING SETS': <TokenType.GROUPING_SETS: 'GROUPING_SETS'>, 'HAVING': <TokenType.HAVING: 'HAVING'>, 'ILIKE': <TokenType.ILIKE: 'ILIKE'>, 'IN': <TokenType.IN: 'IN'>, 'INDEX': <TokenType.INDEX: 'INDEX'>, 'INET': <TokenType.INET: 'INET'>, 'INNER': <TokenType.INNER: 'INNER'>, 'INSERT': <TokenType.INSERT: 'INSERT'>, 'INTERVAL': <TokenType.INTERVAL: 'INTERVAL'>, 'INTERSECT': <TokenType.INTERSECT: 'INTERSECT'>, 'INTO': <TokenType.INTO: 'INTO'>, 'IS': <TokenType.IS: 'IS'>, 'ISNULL': <TokenType.ISNULL: 'ISNULL'>, 'JOIN': <TokenType.JOIN: 'JOIN'>, 'KEEP': <TokenType.KEEP: 'KEEP'>, 'KILL': <TokenType.KILL: 'KILL'>, 'LATERAL': <TokenType.LATERAL: 'LATERAL'>, 'LEFT': <TokenType.LEFT: 'LEFT'>, 'LIKE': <TokenType.LIKE: 'LIKE'>, 'LIMIT': <TokenType.LIMIT: 'LIMIT'>, 'LOAD': <TokenType.LOAD: 'LOAD'>, 'LOCK': <TokenType.LOCK: 'LOCK'>, 'MERGE': <TokenType.MERGE: 'MERGE'>, 'NATURAL': <TokenType.NATURAL: 'NATURAL'>, 'NEXT': <TokenType.NEXT: 'NEXT'>, 'NOT': <TokenType.NOT: 'NOT'>, 'NOTNULL': <TokenType.NOTNULL: 'NOTNULL'>, 'NULL': <TokenType.NULL: 'NULL'>, 'OBJECT': <TokenType.OBJECT: 'OBJECT'>, 'OFFSET': <TokenType.OFFSET: 'OFFSET'>, 'ON': <TokenType.ON: 'ON'>, 'OR': <TokenType.OR: 'OR'>, 'XOR': <TokenType.XOR: 'XOR'>, 'ORDER BY': <TokenType.ORDER_BY: 'ORDER_BY'>, 'ORDINALITY': <TokenType.ORDINALITY: 'ORDINALITY'>, 'OUTER': <TokenType.OUTER: 'OUTER'>, 'OVER': <TokenType.OVER: 'OVER'>, 'OVERLAPS': <TokenType.OVERLAPS: 'OVERLAPS'>, 'OVERWRITE': <TokenType.OVERWRITE: 'OVERWRITE'>, 'PARTITION': <TokenType.PARTITION: 'PARTITION'>, 'PARTITION BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED_BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PERCENT': <TokenType.PERCENT: 'PERCENT'>, 'PIVOT': <TokenType.PIVOT: 'PIVOT'>, 'PRAGMA': <TokenType.PRAGMA: 'PRAGMA'>, 'PRIMARY KEY': <TokenType.PRIMARY_KEY: 'PRIMARY_KEY'>, 'PROCEDURE': <TokenType.PROCEDURE: 'PROCEDURE'>, 'QUALIFY': <TokenType.QUALIFY: 'QUALIFY'>, 'RANGE': <TokenType.RANGE: 'RANGE'>, 'RECURSIVE': <TokenType.RECURSIVE: 'RECURSIVE'>, 'REGEXP': <TokenType.RLIKE: 'RLIKE'>, 'RENAME': <TokenType.RENAME: 'RENAME'>, 'REPLACE': <TokenType.REPLACE: 'REPLACE'>, 'RETURNING': <TokenType.RETURNING: 'RETURNING'>, 'REFERENCES': <TokenType.REFERENCES: 'REFERENCES'>, 'RIGHT': <TokenType.RIGHT: 'RIGHT'>, 'RLIKE': <TokenType.RLIKE: 'RLIKE'>, 'ROLLBACK': <TokenType.ROLLBACK: 'ROLLBACK'>, 'ROLLUP': <TokenType.ROLLUP: 'ROLLUP'>, 'ROW': <TokenType.ROW: 'ROW'>, 'ROWS': <TokenType.ROWS: 'ROWS'>, 'SCHEMA': <TokenType.SCHEMA: 'SCHEMA'>, 'SELECT': <TokenType.SELECT: 'SELECT'>, 'SEMI': <TokenType.SEMI: 'SEMI'>, 'SET': <TokenType.SET: 'SET'>, 'SETTINGS': <TokenType.SETTINGS: 'SETTINGS'>, 'SHOW': <TokenType.SHOW: 'SHOW'>, 'SIMILAR TO': <TokenType.SIMILAR_TO: 'SIMILAR_TO'>, 'SOME': <TokenType.SOME: 'SOME'>, 'SORT BY': <TokenType.SORT_BY: 'SORT_BY'>, 'START WITH': <TokenType.START_WITH: 'START_WITH'>, 'STRAIGHT_JOIN': <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, 'TABLE': <TokenType.TABLE: 'TABLE'>, 'TABLESAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'TEMP': <TokenType.TEMPORARY: 'TEMPORARY'>, 'TEMPORARY': <TokenType.TEMPORARY: 'TEMPORARY'>, 'THEN': <TokenType.THEN: 'THEN'>, 'TRUE': <TokenType.TRUE: 'TRUE'>, 'TRUNCATE': <TokenType.TRUNCATE: 'TRUNCATE'>, 'UNION': <TokenType.UNION: 'UNION'>, 'UNKNOWN': <TokenType.UNKNOWN: 'UNKNOWN'>, 'UNNEST': <TokenType.UNNEST: 'UNNEST'>, 'UNPIVOT': <TokenType.UNPIVOT: 'UNPIVOT'>, 'UPDATE': <TokenType.UPDATE: 'UPDATE'>, 'USE': <TokenType.USE: 'USE'>, 'USING': <TokenType.USING: 'USING'>, 'UUID': <TokenType.UUID: 'UUID'>, 'VIEW': <TokenType.VIEW: 'VIEW'>, 'VOLATILE': <TokenType.VOLATILE: 'VOLATILE'>, 'WHEN': <TokenType.WHEN: 'WHEN'>, 'WHERE': <TokenType.WHERE: 'WHERE'>, 'WINDOW': <TokenType.WINDOW: 'WINDOW'>, 'WITH': <TokenType.WITH: 'WITH'>, 'APPLY': <TokenType.APPLY: 'APPLY'>, 'ARRAY': <TokenType.ARRAY: 'ARRAY'>, 'BIT': <TokenType.BIT: 'BIT'>, 'BOOL': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BOOLEAN': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BYTE': <TokenType.TINYINT: 'TINYINT'>, 'MEDIUMINT': <TokenType.MEDIUMINT: 'MEDIUMINT'>, 'INT1': <TokenType.TINYINT: 'TINYINT'>, 'TINYINT': <TokenType.TINYINT: 'TINYINT'>, 'INT16': <TokenType.SMALLINT: 'SMALLINT'>, 'SHORT': <TokenType.SMALLINT: 'SMALLINT'>, 'SMALLINT': <TokenType.SMALLINT: 'SMALLINT'>, 'INT128': <TokenType.INT128: 'INT128'>, 'HUGEINT': <TokenType.INT128: 'INT128'>, 'UHUGEINT': <TokenType.UINT128: 'UINT128'>, 'INT2': <TokenType.SMALLINT: 'SMALLINT'>, 'INTEGER': <TokenType.INT: 'INT'>, 'INT': <TokenType.INT: 'INT'>, 'INT4': <TokenType.INT: 'INT'>, 'INT32': <TokenType.INT: 'INT'>, 'INT64': <TokenType.BIGINT: 'BIGINT'>, 'LONG': <TokenType.BIGINT: 'BIGINT'>, 'BIGINT': <TokenType.BIGINT: 'BIGINT'>, 'INT8': <TokenType.TINYINT: 'TINYINT'>, 'UINT': <TokenType.UINT: 'UINT'>, 'DEC': <TokenType.DECIMAL: 'DECIMAL'>, 'DECIMAL': <TokenType.DECIMAL: 'DECIMAL'>, 'DECIMAL32': <TokenType.DECIMAL32: 'DECIMAL32'>, 'DECIMAL64': <TokenType.DECIMAL64: 'DECIMAL64'>, 'DECIMAL128': <TokenType.DECIMAL128: 'DECIMAL128'>, 'BIGDECIMAL': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'BIGNUMERIC': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'LIST': <TokenType.LIST: 'LIST'>, 'MAP': <TokenType.MAP: 'MAP'>, 'NULLABLE': <TokenType.NULLABLE: 'NULLABLE'>, 'NUMBER': <TokenType.DECIMAL: 'DECIMAL'>, 'NUMERIC': <TokenType.DECIMAL: 'DECIMAL'>, 'FIXED': <TokenType.DECIMAL: 'DECIMAL'>, 'REAL': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT4': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT8': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE PRECISION': <TokenType.DOUBLE: 'DOUBLE'>, 'JSON': <TokenType.JSON: 'JSON'>, 'JSONB': <TokenType.JSONB: 'JSONB'>, 'CHAR': <TokenType.CHAR: 'CHAR'>, 'CHARACTER': <TokenType.CHAR: 'CHAR'>, 'NCHAR': <TokenType.NCHAR: 'NCHAR'>, 'VARCHAR': <TokenType.VARCHAR: 'VARCHAR'>, 'VARCHAR2': <TokenType.VARCHAR: 'VARCHAR'>, 'NVARCHAR': <TokenType.NVARCHAR: 'NVARCHAR'>, 'NVARCHAR2': <TokenType.NVARCHAR: 'NVARCHAR'>, 'BPCHAR': <TokenType.BPCHAR: 'BPCHAR'>, 'STR': <TokenType.TEXT: 'TEXT'>, 'STRING': <TokenType.TEXT: 'TEXT'>, 'TEXT': <TokenType.TEXT: 'TEXT'>, 'LONGTEXT': <TokenType.LONGTEXT: 'LONGTEXT'>, 'MEDIUMTEXT': <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, 'TINYTEXT': <TokenType.TINYTEXT: 'TINYTEXT'>, 'CLOB': <TokenType.TEXT: 'TEXT'>, 'LONGVARCHAR': <TokenType.TEXT: 'TEXT'>, 'BINARY': <TokenType.BINARY: 'BINARY'>, 'BLOB': <TokenType.VARBINARY: 'VARBINARY'>, 'LONGBLOB': <TokenType.LONGBLOB: 'LONGBLOB'>, 'MEDIUMBLOB': <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, 'TINYBLOB': <TokenType.TINYBLOB: 'TINYBLOB'>, 'BYTEA': <TokenType.VARBINARY: 'VARBINARY'>, 'VARBINARY': <TokenType.VARBINARY: 'VARBINARY'>, 'TIME': <TokenType.TIME: 'TIME'>, 'TIMETZ': <TokenType.TIMETZ: 'TIMETZ'>, 'TIMESTAMP': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPTZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPLTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'TIMESTAMP_LTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'TIMESTAMPNTZ': <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, 'TIMESTAMP_NTZ': <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, 'DATE': <TokenType.DATE: 'DATE'>, 'DATETIME': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'INT4RANGE': <TokenType.INT4RANGE: 'INT4RANGE'>, 'INT4MULTIRANGE': <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, 'INT8RANGE': <TokenType.INT8RANGE: 'INT8RANGE'>, 'INT8MULTIRANGE': <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, 'NUMRANGE': <TokenType.NUMRANGE: 'NUMRANGE'>, 'NUMMULTIRANGE': <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, 'TSRANGE': <TokenType.TSRANGE: 'TSRANGE'>, 'TSMULTIRANGE': <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, 'TSTZRANGE': <TokenType.TSTZRANGE: 'TSTZRANGE'>, 'TSTZMULTIRANGE': <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, 'DATERANGE': <TokenType.DATERANGE: 'DATERANGE'>, 'DATEMULTIRANGE': <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, 'UNIQUE': <TokenType.UNIQUE: 'UNIQUE'>, 'VECTOR': <TokenType.VECTOR: 'VECTOR'>, 'STRUCT': <TokenType.STRUCT: 'STRUCT'>, 'SEQUENCE': <TokenType.SEQUENCE: 'SEQUENCE'>, 'VARIANT': <TokenType.VARIANT: 'VARIANT'>, 'ALTER': <TokenType.ALTER: 'ALTER'>, 'ANALYZE': <TokenType.COMMAND: 'COMMAND'>, 'CALL': <TokenType.COMMAND: 'COMMAND'>, 'COMMENT': <TokenType.COMMENT: 'COMMENT'>, 'EXPLAIN': <TokenType.COMMAND: 'COMMAND'>, 'GRANT': <TokenType.GRANT: 'GRANT'>, 'OPTIMIZE': <TokenType.COMMAND: 'COMMAND'>, 'PREPARE': <TokenType.COMMAND: 'COMMAND'>, 'VACUUM': <TokenType.COMMAND: 'COMMAND'>, 'USER-DEFINED': <TokenType.USERDEFINED: 'USERDEFINED'>, 'FOR VERSION': <TokenType.VERSION_SNAPSHOT: 'VERSION_SNAPSHOT'>, 'FOR TIMESTAMP': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>, 'ANY TYPE': <TokenType.VARIANT: 'VARIANT'>, 'BEGIN TRANSACTION': <TokenType.BEGIN: 'BEGIN'>, 'BYTEINT': <TokenType.INT: 'INT'>, 'BYTES': <TokenType.BINARY: 'BINARY'>, 'CURRENT_DATETIME': <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, 'DECLARE': <TokenType.COMMAND: 'COMMAND'>, 'ELSEIF': <TokenType.COMMAND: 'COMMAND'>, 'EXCEPTION': <TokenType.COMMAND: 'COMMAND'>, 'FLOAT64': <TokenType.DOUBLE: 'DOUBLE'>, 'FOR SYSTEM_TIME': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>, 'MODEL': <TokenType.MODEL: 'MODEL'>, 'NOT DETERMINISTIC': <TokenType.VOLATILE: 'VOLATILE'>, 'RECORD': <TokenType.STRUCT: 'STRUCT'>}

##### Inherited Members

sqlglot.tokens.Tokenizer
  Tokenizer
  SINGLE_TOKENS
  BIT_STRINGS
  HEREDOC_STRINGS
  UNICODE_STRINGS
  IDENTIFIER_ESCAPES
  VAR_SINGLE_TOKENS
  HEREDOC_TAG_IS_IDENTIFIER
  HEREDOC_STRING_ALTERNATIVE
  STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS
  NESTED_COMMENTS
  WHITE_SPACE
  COMMANDS
  COMMAND_PREFIX_TOKENS
  NUMERIC_LITERALS
  dialect
  reset
  tokenize
  tokenize_rs
  size
  sql
  tokens

class BigQuery.Parser(sqlglot.parser.Parser): View Source

    368    class Parser(parser.Parser):
    369        PREFIXED_PIVOT_COLUMNS = True
    370        LOG_DEFAULTS_TO_LN = True
    371        SUPPORTS_IMPLICIT_UNNEST = True
    372
    373        FUNCTIONS = {
    374            **parser.Parser.FUNCTIONS,
    375            "DATE": _build_date,
    376            "DATE_ADD": build_date_delta_with_interval(exp.DateAdd),
    377            "DATE_SUB": build_date_delta_with_interval(exp.DateSub),
    378            "DATE_TRUNC": lambda args: exp.DateTrunc(
    379                unit=exp.Literal.string(str(seq_get(args, 1))),
    380                this=seq_get(args, 0),
    381            ),
    382            "DATETIME": _build_datetime,
    383            "DATETIME_ADD": build_date_delta_with_interval(exp.DatetimeAdd),
    384            "DATETIME_SUB": build_date_delta_with_interval(exp.DatetimeSub),
    385            "DIV": binary_from_function(exp.IntDiv),
    386            "FORMAT_DATE": lambda args: exp.TimeToStr(
    387                this=exp.TsOrDsToDate(this=seq_get(args, 1)), format=seq_get(args, 0)
    388            ),
    389            "GENERATE_ARRAY": exp.GenerateSeries.from_arg_list,
    390            "JSON_EXTRACT_SCALAR": lambda args: exp.JSONExtractScalar(
    391                this=seq_get(args, 0), expression=seq_get(args, 1) or exp.Literal.string("$")
    392            ),
    393            "LENGTH": lambda args: exp.Length(this=seq_get(args, 0), binary=True),
    394            "MD5": exp.MD5Digest.from_arg_list,
    395            "TO_HEX": _build_to_hex,
    396            "PARSE_DATE": lambda args: build_formatted_time(exp.StrToDate, "bigquery")(
    397                [seq_get(args, 1), seq_get(args, 0)]
    398            ),
    399            "PARSE_TIMESTAMP": _build_parse_timestamp,
    400            "REGEXP_CONTAINS": exp.RegexpLike.from_arg_list,
    401            "REGEXP_EXTRACT": _build_regexp_extract,
    402            "SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
    403            "SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
    404            "SPLIT": lambda args: exp.Split(
    405                # https://cloud.google.com/bigquery/docs/reference/standard-sql/string_functions#split
    406                this=seq_get(args, 0),
    407                expression=seq_get(args, 1) or exp.Literal.string(","),
    408            ),
    409            "TIME": _build_time,
    410            "TIME_ADD": build_date_delta_with_interval(exp.TimeAdd),
    411            "TIME_SUB": build_date_delta_with_interval(exp.TimeSub),
    412            "TIMESTAMP": _build_timestamp,
    413            "TIMESTAMP_ADD": build_date_delta_with_interval(exp.TimestampAdd),
    414            "TIMESTAMP_SUB": build_date_delta_with_interval(exp.TimestampSub),
    415            "TIMESTAMP_MICROS": lambda args: exp.UnixToTime(
    416                this=seq_get(args, 0), scale=exp.UnixToTime.MICROS
    417            ),
    418            "TIMESTAMP_MILLIS": lambda args: exp.UnixToTime(
    419                this=seq_get(args, 0), scale=exp.UnixToTime.MILLIS
    420            ),
    421            "TIMESTAMP_SECONDS": lambda args: exp.UnixToTime(this=seq_get(args, 0)),
    422            "TO_JSON_STRING": exp.JSONFormat.from_arg_list,
    423            "FORMAT_DATETIME": lambda args: exp.TimeToStr(
    424                this=exp.TsOrDsToTimestamp(this=seq_get(args, 1)), format=seq_get(args, 0)
    425            ),
    426        }
    427
    428        FUNCTION_PARSERS = {
    429            **parser.Parser.FUNCTION_PARSERS,
    430            "ARRAY": lambda self: self.expression(exp.Array, expressions=[self._parse_statement()]),
    431        }
    432        FUNCTION_PARSERS.pop("TRIM")
    433
    434        NO_PAREN_FUNCTIONS = {
    435            **parser.Parser.NO_PAREN_FUNCTIONS,
    436            TokenType.CURRENT_DATETIME: exp.CurrentDatetime,
    437        }
    438
    439        NESTED_TYPE_TOKENS = {
    440            *parser.Parser.NESTED_TYPE_TOKENS,
    441            TokenType.TABLE,
    442        }
    443
    444        PROPERTY_PARSERS = {
    445            **parser.Parser.PROPERTY_PARSERS,
    446            "NOT DETERMINISTIC": lambda self: self.expression(
    447                exp.StabilityProperty, this=exp.Literal.string("VOLATILE")
    448            ),
    449            "OPTIONS": lambda self: self._parse_with_property(),
    450        }
    451
    452        CONSTRAINT_PARSERS = {
    453            **parser.Parser.CONSTRAINT_PARSERS,
    454            "OPTIONS": lambda self: exp.Properties(expressions=self._parse_with_property()),
    455        }
    456
    457        RANGE_PARSERS = parser.Parser.RANGE_PARSERS.copy()
    458        RANGE_PARSERS.pop(TokenType.OVERLAPS)
    459
    460        NULL_TOKENS = {TokenType.NULL, TokenType.UNKNOWN}
    461
    462        STATEMENT_PARSERS = {
    463            **parser.Parser.STATEMENT_PARSERS,
    464            TokenType.ELSE: lambda self: self._parse_as_command(self._prev),
    465            TokenType.END: lambda self: self._parse_as_command(self._prev),
    466            TokenType.FOR: lambda self: self._parse_for_in(),
    467        }
    468
    469        BRACKET_OFFSETS = {
    470            "OFFSET": (0, False),
    471            "ORDINAL": (1, False),
    472            "SAFE_OFFSET": (0, True),
    473            "SAFE_ORDINAL": (1, True),
    474        }
    475
    476        def _parse_for_in(self) -> exp.ForIn:
    477            this = self._parse_range()
    478            self._match_text_seq("DO")
    479            return self.expression(exp.ForIn, this=this, expression=self._parse_statement())
    480
    481        def _parse_table_part(self, schema: bool = False) -> t.Optional[exp.Expression]:
    482            this = super()._parse_table_part(schema=schema) or self._parse_number()
    483
    484            # https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#table_names
    485            if isinstance(this, exp.Identifier):
    486                table_name = this.name
    487                while self._match(TokenType.DASH, advance=False) and self._next:
    488                    text = ""
    489                    while self._is_connected() and self._curr.token_type != TokenType.DOT:
    490                        self._advance()
    491                        text += self._prev.text
    492                    table_name += text
    493
    494                this = exp.Identifier(this=table_name, quoted=this.args.get("quoted"))
    495            elif isinstance(this, exp.Literal):
    496                table_name = this.name
    497
    498                if self._is_connected() and self._parse_var(any_token=True):
    499                    table_name += self._prev.text
    500
    501                this = exp.Identifier(this=table_name, quoted=True)
    502
    503            return this
    504
    505        def _parse_table_parts(
    506            self, schema: bool = False, is_db_reference: bool = False, wildcard: bool = False
    507        ) -> exp.Table:
    508            table = super()._parse_table_parts(
    509                schema=schema, is_db_reference=is_db_reference, wildcard=True
    510            )
    511
    512            # proj-1.db.tbl -- `1.` is tokenized as a float so we need to unravel it here
    513            if not table.catalog:
    514                if table.db:
    515                    parts = table.db.split(".")
    516                    if len(parts) == 2 and not table.args["db"].quoted:
    517                        table.set("catalog", exp.Identifier(this=parts[0]))
    518                        table.set("db", exp.Identifier(this=parts[1]))
    519                else:
    520                    parts = table.name.split(".")
    521                    if len(parts) == 2 and not table.this.quoted:
    522                        table.set("db", exp.Identifier(this=parts[0]))
    523                        table.set("this", exp.Identifier(this=parts[1]))
    524
    525            if isinstance(table.this, exp.Identifier) and any("." in p.name for p in table.parts):
    526                catalog, db, this, *rest = (
    527                    exp.to_identifier(p, quoted=True)
    528                    for p in split_num_words(".".join(p.name for p in table.parts), ".", 3)
    529                )
    530
    531                if rest and this:
    532                    this = exp.Dot.build([this, *rest])  # type: ignore
    533
    534                table = exp.Table(
    535                    this=this, db=db, catalog=catalog, pivots=table.args.get("pivots")
    536                )
    537                table.meta["quoted_table"] = True
    538
    539            return table
    540
    541        def _parse_column(self) -> t.Optional[exp.Expression]:
    542            column = super()._parse_column()
    543            if isinstance(column, exp.Column):
    544                parts = column.parts
    545                if any("." in p.name for p in parts):
    546                    catalog, db, table, this, *rest = (
    547                        exp.to_identifier(p, quoted=True)
    548                        for p in split_num_words(".".join(p.name for p in parts), ".", 4)
    549                    )
    550
    551                    if rest and this:
    552                        this = exp.Dot.build([this, *rest])  # type: ignore
    553
    554                    column = exp.Column(this=this, table=table, db=db, catalog=catalog)
    555                    column.meta["quoted_column"] = True
    556
    557            return column
    558
    559        @t.overload
    560        def _parse_json_object(self, agg: Lit[False]) -> exp.JSONObject: ...
    561
    562        @t.overload
    563        def _parse_json_object(self, agg: Lit[True]) -> exp.JSONObjectAgg: ...
    564
    565        def _parse_json_object(self, agg=False):
    566            json_object = super()._parse_json_object()
    567            array_kv_pair = seq_get(json_object.expressions, 0)
    568
    569            # Converts BQ's "signature 2" of JSON_OBJECT into SQLGlot's canonical representation
    570            # https://cloud.google.com/bigquery/docs/reference/standard-sql/json_functions#json_object_signature2
    571            if (
    572                array_kv_pair
    573                and isinstance(array_kv_pair.this, exp.Array)
    574                and isinstance(array_kv_pair.expression, exp.Array)
    575            ):
    576                keys = array_kv_pair.this.expressions
    577                values = array_kv_pair.expression.expressions
    578
    579                json_object.set(
    580                    "expressions",
    581                    [exp.JSONKeyValue(this=k, expression=v) for k, v in zip(keys, values)],
    582                )
    583
    584            return json_object
    585
    586        def _parse_bracket(
    587            self, this: t.Optional[exp.Expression] = None
    588        ) -> t.Optional[exp.Expression]:
    589            bracket = super()._parse_bracket(this)
    590
    591            if this is bracket:
    592                return bracket
    593
    594            if isinstance(bracket, exp.Bracket):
    595                for expression in bracket.expressions:
    596                    name = expression.name.upper()
    597
    598                    if name not in self.BRACKET_OFFSETS:
    599                        break
    600
    601                    offset, safe = self.BRACKET_OFFSETS[name]
    602                    bracket.set("offset", offset)
    603                    bracket.set("safe", safe)
    604                    expression.replace(expression.expressions[0])
    605
    606            return bracket
    607
    608        def _parse_unnest(self, with_alias: bool = True) -> t.Optional[exp.Unnest]:
    609            unnest = super()._parse_unnest(with_alias=with_alias)
    610
    611            if not unnest:
    612                return None
    613
    614            unnest_expr = seq_get(unnest.expressions, 0)
    615            if unnest_expr:
    616                from sqlglot.optimizer.annotate_types import annotate_types
    617
    618                unnest_expr = annotate_types(unnest_expr)
    619
    620                # Unnesting a nested array (i.e array of structs) explodes the top-level struct fields,
    621                # in contrast to other dialects such as DuckDB which flattens only the array by default
    622                if unnest_expr.is_type(exp.DataType.Type.ARRAY) and any(
    623                    array_elem.is_type(exp.DataType.Type.STRUCT)
    624                    for array_elem in unnest_expr._type.expressions
    625                ):
    626                    unnest.set("explode_array", True)
    627
    628            return unnest

Parser consumes a list of tokens produced by the Tokenizer and produces a parsed syntax tree.

###### Arguments:

- error_level: The desired error level. Default: ErrorLevel.IMMEDIATE
- error_message_context: The amount of context to capture from a query string when displaying the error message (in number of characters). Default: 100
- max_errors: Maximum number of error messages to include in a raised ParseError. This is only relevant if error_level is ErrorLevel.RAISE. Default: 3

PREFIXED_PIVOT_COLUMNS = True
LOG_DEFAULTS_TO_LN = True
SUPPORTS_IMPLICIT_UNNEST = True
FUNCTIONS = {'ABS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Abs'>>, 'ADD_MONTHS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AddMonths'>>, 'ANONYMOUS_AGG_FUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AnonymousAggFunc'>>, 'ANY_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AnyValue'>>, 'APPLY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Apply'>>, 'APPROX_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_COUNT_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxQuantile'>>, 'APPROX_TOP_K': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxTopK'>>, 'ARG_MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARGMAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'MAX_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARG_MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARGMIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'MIN_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARRAY': <function Parser.<lambda>>, 'ARRAY_AGG': <function Parser.<lambda>>, 'ARRAY_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAll'>>, 'ARRAY_ANY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAny'>>, 'ARRAY_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CONSTRUCT_COMPACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConstructCompact'>>, 'ARRAY_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContains'>>, 'ARRAY_HAS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContains'>>, 'ARRAY_CONTAINS_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContainsAll'>>, 'ARRAY_HAS_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContainsAll'>>, 'FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_OVERLAPS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayOverlaps'>>, 'ARRAY_SIZE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySize'>>, 'ARRAY_LENGTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySize'>>, 'ARRAY_SORT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySort'>>, 'ARRAY_SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySum'>>, 'ARRAY_TO_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayToString'>>, 'ARRAY_JOIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayToString'>>, 'ARRAY_UNION_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayUnionAgg'>>, 'ARRAY_UNIQUE_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayUniqueAgg'>>, 'AVG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Avg'>>, 'CASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Case'>>, 'CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Cast'>>, 'CAST_TO_STR_TYPE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CastToStrType'>>, 'CBRT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Cbrt'>>, 'CEIL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CEILING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CHR': <function Parser.<lambda>>, 'CHAR': <function Parser.<lambda>>, 'COALESCE': <function build_coalesce>, 'IFNULL': <function build_coalesce>, 'NVL': <function build_coalesce>, 'COLLATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Collate'>>, 'COLUMNS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Columns'>>, 'COMBINED_AGG_FUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CombinedAggFunc'>>, 'COMBINED_PARAMETERIZED_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CombinedParameterizedAgg'>>, 'CONCAT': <function Parser.<lambda>>, 'CONCAT_WS': <function Parser.<lambda>>, 'CONNECT_BY_ROOT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ConnectByRoot'>>, 'CONVERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Convert'>>, 'CONVERT_TIMEZONE': <function build_convert_timezone>, 'CORR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Corr'>>, 'COUNT': <function Parser.<lambda>>, 'COUNT_IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CountIf'>>, 'COUNTIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CountIf'>>, 'COVAR_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CovarPop'>>, 'COVAR_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CovarSamp'>>, 'CURRENT_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDate'>>, 'CURRENT_DATETIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDatetime'>>, 'CURRENT_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTime'>>, 'CURRENT_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTimestamp'>>, 'CURRENT_USER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentUser'>>, 'DATE': <function _build_date>, 'DATE_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'DATEDIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateDiff'>>, 'DATE_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateDiff'>>, 'DATE_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateFromParts'>>, 'DATEFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateFromParts'>>, 'DATE_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateStrToDate'>>, 'DATE_SUB': <function build_date_delta_with_interval.<locals>._builder>, 'DATE_TO_DATE_STR': <function Parser.<lambda>>, 'DATE_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateToDi'>>, 'DATE_TRUNC': <function BigQuery.Parser.<lambda>>, 'DATETIME': <function _build_datetime>, 'DATETIME_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'DATETIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeDiff'>>, 'DATETIME_SUB': <function build_date_delta_with_interval.<locals>._builder>, 'DATETIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeTrunc'>>, 'DAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Day'>>, 'DAY_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAYOFMONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAY_OF_WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAYOFWEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAYOFWEEK_ISO': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeekIso'>>, 'ISODOW': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeekIso'>>, 'DAY_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DAYOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DECODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Decode'>>, 'DI_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DiToDate'>>, 'ENCODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Encode'>>, 'EXP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Exp'>>, 'EXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Explode'>>, 'EXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ExplodeOuter'>>, 'EXPLODING_GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ExplodingGenerateSeries'>>, 'EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Extract'>>, 'FIRST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.First'>>, 'FIRST_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FirstValue'>>, 'FLATTEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Flatten'>>, 'FLOOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Floor'>>, 'FROM_BASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase'>>, 'FROM_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase64'>>, 'FROM_ISO8601_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromISO8601Timestamp'>>, 'GAP_FILL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GapFill'>>, 'GENERATE_DATE_ARRAY': <function Parser.<lambda>>, 'GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'GENERATE_TIMESTAMP_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateTimestampArray'>>, 'GREATEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Greatest'>>, 'GROUP_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GroupConcat'>>, 'HEX': <function build_hex>, 'HLL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Hll'>>, 'IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'IIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'INITCAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Initcap'>>, 'INLINE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Inline'>>, 'IS_INF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsInf'>>, 'ISINF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsInf'>>, 'IS_NAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'ISNAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'J_S_O_N_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArray'>>, 'J_S_O_N_ARRAY_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayAgg'>>, 'JSON_ARRAY_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayContains'>>, 'JSONB_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBContains'>>, 'JSONB_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtract'>>, 'JSONB_EXTRACT_SCALAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtractScalar'>>, 'J_S_O_N_EXISTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONExists'>>, 'JSON_EXTRACT': <function build_extract_json_with_path.<locals>._builder>, 'JSON_EXTRACT_SCALAR': <function BigQuery.Parser.<lambda>>, 'JSON_FORMAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONFormat'>>, 'J_S_O_N_OBJECT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONObject'>>, 'J_S_O_N_OBJECT_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONObjectAgg'>>, 'J_S_O_N_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONTable'>>, 'LAG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lag'>>, 'LAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Last'>>, 'LAST_DAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastDay'>>, 'LAST_DAY_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastDay'>>, 'LAST_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastValue'>>, 'LEAD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lead'>>, 'LEAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Least'>>, 'LEFT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Left'>>, 'LENGTH': <function BigQuery.Parser.<lambda>>, 'LEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Length'>>, 'LEVENSHTEIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Levenshtein'>>, 'LIST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.List'>>, 'LN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ln'>>, 'LOG': <function build_logarithm>, 'LOGICAL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOLAND_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'LOGICAL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOLOR_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'LOWER': <function build_lower>, 'LCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lower'>>, 'LOWER_HEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LowerHex'>>, 'MD5': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5Digest'>>, 'MD5_DIGEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5Digest'>>, 'MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Map'>>, 'MAP_FROM_ENTRIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MapFromEntries'>>, 'MATCH_AGAINST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MatchAgainst'>>, 'MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Max'>>, 'MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Min'>>, 'MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Month'>>, 'MONTHS_BETWEEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MonthsBetween'>>, 'NEXT_VALUE_FOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NextValueFor'>>, 'NORMALIZE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Normalize'>>, 'NTH_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NthValue'>>, 'NULLIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nullif'>>, 'NUMBER_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NumberToStr'>>, 'NVL2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nvl2'>>, 'OBJECT_INSERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ObjectInsert'>>, 'OPEN_J_S_O_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.OpenJSON'>>, 'OVERLAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Overlay'>>, 'PAD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pad'>>, 'PARAMETERIZED_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParameterizedAgg'>>, 'PARSE_JSON': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'JSON_PARSE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'PERCENTILE_CONT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileCont'>>, 'PERCENTILE_DISC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileDisc'>>, 'POSEXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Posexplode'>>, 'POSEXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PosexplodeOuter'>>, 'POWER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'POW': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'PREDICT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Predict'>>, 'QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Quantile'>>, 'QUARTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Quarter'>>, 'RAND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Rand'>>, 'RANDOM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Rand'>>, 'RANDN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Randn'>>, 'RANGE_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RangeN'>>, 'READ_CSV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ReadCSV'>>, 'REDUCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Reduce'>>, 'REGEXP_EXTRACT': <function _build_regexp_extract>, 'REGEXP_I_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpILike'>>, 'REGEXP_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'REGEXP_REPLACE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpReplace'>>, 'REGEXP_SPLIT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpSplit'>>, 'REPEAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Repeat'>>, 'RIGHT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Right'>>, 'ROUND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Round'>>, 'ROW_NUMBER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RowNumber'>>, 'SHA': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA1': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA2'>>, 'SAFE_DIVIDE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SafeDivide'>>, 'SIGN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sign'>>, 'SIGNUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sign'>>, 'SORT_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SortArray'>>, 'SPLIT': <function BigQuery.Parser.<lambda>>, 'SQRT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sqrt'>>, 'STANDARD_HASH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StandardHash'>>, 'STAR_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StarMap'>>, 'STARTS_WITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STARTSWITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STDDEV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stddev'>>, 'STDEV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stddev'>>, 'STDDEV_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevPop'>>, 'STDDEV_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevSamp'>>, 'STR_POSITION': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrPosition'>>, 'STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToDate'>>, 'STR_TO_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToMap'>>, 'STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToTime'>>, 'STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToUnix'>>, 'STRING_TO_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StringToArray'>>, 'SPLIT_BY_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StringToArray'>>, 'STRUCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Struct'>>, 'STRUCT_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StructExtract'>>, 'STUFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'INSERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'SUBSTRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Substring'>>, 'SUBSTR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Substring'>>, 'SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sum'>>, 'TIME': <function _build_time>, 'TIME_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'TIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeDiff'>>, 'TIME_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeFromParts'>>, 'TIMEFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeFromParts'>>, 'TIME_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToDate'>>, 'TIME_STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToTime'>>, 'TIME_STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToUnix'>>, 'TIME_SUB': <function build_date_delta_with_interval.<locals>._builder>, 'TIME_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToStr'>>, 'TIME_TO_TIME_STR': <function Parser.<lambda>>, 'TIME_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToUnix'>>, 'TIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeTrunc'>>, 'TIMESTAMP': <function _build_timestamp>, 'TIMESTAMP_ADD': <function build_date_delta_with_interval.<locals>._builder>, 'TIMESTAMPDIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_FROM_PARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampFromParts'>>, 'TIMESTAMPFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampFromParts'>>, 'TIMESTAMP_SUB': <function build_date_delta_with_interval.<locals>._builder>, 'TIMESTAMP_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampTrunc'>>, 'TO_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToArray'>>, 'TO_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToBase64'>>, 'TO_CHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToChar'>>, 'TO_DAYS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToDays'>>, 'TO_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToMap'>>, 'TO_NUMBER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToNumber'>>, 'TRANSFORM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Transform'>>, 'TRIM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Trim'>>, 'TRY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Try'>>, 'TRY_CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TryCast'>>, 'TS_OR_DI_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDiToDi'>>, 'TS_OR_DS_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsAdd'>>, 'TS_OR_DS_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsDiff'>>, 'TS_OR_DS_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToDate'>>, 'TS_OR_DS_TO_DATE_STR': <function Parser.<lambda>>, 'TS_OR_DS_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToTime'>>, 'TS_OR_DS_TO_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToTimestamp'>>, 'UNHEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Unhex'>>, 'UNIX_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixDate'>>, 'UNIX_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToStr'>>, 'UNIX_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTime'>>, 'UNIX_TO_TIME_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTimeStr'>>, 'UNNEST': <function Parser.<lambda>>, 'UPPER': <function build_upper>, 'UCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Upper'>>, 'UUID': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Uuid'>>, 'GEN_RANDOM_UUID': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Uuid'>>, 'GENERATE_UUID': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Uuid'>>, 'UUID_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Uuid'>>, 'VAR_MAP': <function build_var_map>, 'VARIANCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VAR_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'VAR_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Week'>>, 'WEEK_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WEEKOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WHEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.When'>>, 'X_M_L_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.XMLTable'>>, 'XOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Xor'>>, 'YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Year'>>, 'ARRAYAGG': <function Parser.<lambda>>, 'GLOB': <function Parser.<lambda>>, 'INSTR': <function Parser.<lambda>>, 'JSON_EXTRACT_PATH_TEXT': <function build_extract_json_with_path.<locals>._builder>, 'LIKE': <function build_like>, 'LOG2': <function Parser.<lambda>>, 'LOG10': <function Parser.<lambda>>, 'LPAD': <function Parser.<lambda>>, 'LEFTPAD': <function Parser.<lambda>>, 'LTRIM': <function Parser.<lambda>>, 'MOD': <function build_mod>, 'RIGHTPAD': <function Parser.<lambda>>, 'RPAD': <function Parser.<lambda>>, 'RTRIM': <function Parser.<lambda>>, 'SCOPE_RESOLUTION': <function Parser.<lambda>>, 'TO_HEX': <function _build_to_hex>, 'DIV': <function binary_from_function.<locals>.<lambda>>, 'FORMAT_DATE': <function BigQuery.Parser.<lambda>>, 'GENERATE_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'PARSE_DATE': <function BigQuery.Parser.<lambda>>, 'PARSE_TIMESTAMP': <function _build_parse_timestamp>, 'REGEXP_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'SHA256': <function BigQuery.Parser.<lambda>>, 'SHA512': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_MICROS': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_MILLIS': <function BigQuery.Parser.<lambda>>, 'TIMESTAMP_SECONDS': <function BigQuery.Parser.<lambda>>, 'TO_JSON_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONFormat'>>, 'FORMAT_DATETIME': <function BigQuery.Parser.<lambda>>}
FUNCTION_PARSERS = {'CAST': <function Parser.<lambda>>, 'CONVERT': <function Parser.<lambda>>, 'DECODE': <function Parser.<lambda>>, 'EXTRACT': <function Parser.<lambda>>, 'GAP_FILL': <function Parser.<lambda>>, 'JSON_OBJECT': <function Parser.<lambda>>, 'JSON_OBJECTAGG': <function Parser.<lambda>>, 'JSON_TABLE': <function Parser.<lambda>>, 'MATCH': <function Parser.<lambda>>, 'NORMALIZE': <function Parser.<lambda>>, 'OPENJSON': <function Parser.<lambda>>, 'OVERLAY': <function Parser.<lambda>>, 'POSITION': <function Parser.<lambda>>, 'PREDICT': <function Parser.<lambda>>, 'SAFE_CAST': <function Parser.<lambda>>, 'STRING_AGG': <function Parser.<lambda>>, 'SUBSTRING': <function Parser.<lambda>>, 'TRY_CAST': <function Parser.<lambda>>, 'TRY_CONVERT': <function Parser.<lambda>>, 'ARRAY': <function BigQuery.Parser.<lambda>>}
NO_PAREN_FUNCTIONS = {<TokenType.CURRENT_DATE: 'CURRENT_DATE'>: <class 'sqlglot.expressions.CurrentDate'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>: <class 'sqlglot.expressions.CurrentDatetime'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>: <class 'sqlglot.expressions.CurrentTime'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>: <class 'sqlglot.expressions.CurrentTimestamp'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>: <class 'sqlglot.expressions.CurrentUser'>}
NESTED_TYPE_TOKENS = {<TokenType.LIST: 'LIST'>, <TokenType.UNION: 'UNION'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.NESTED: 'NESTED'>, <TokenType.TABLE: 'TABLE'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.MAP: 'MAP'>, <TokenType.RANGE: 'RANGE'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.STRUCT: 'STRUCT'>}
PROPERTY_PARSERS = {'ALLOWED_VALUES': <function Parser.<lambda>>, 'ALGORITHM': <function Parser.<lambda>>, 'AUTO': <function Parser.<lambda>>, 'AUTO_INCREMENT': <function Parser.<lambda>>, 'BACKUP': <function Parser.<lambda>>, 'BLOCKCOMPRESSION': <function Parser.<lambda>>, 'CHARSET': <function Parser.<lambda>>, 'CHARACTER SET': <function Parser.<lambda>>, 'CHECKSUM': <function Parser.<lambda>>, 'CLUSTER BY': <function Parser.<lambda>>, 'CLUSTERED': <function Parser.<lambda>>, 'COLLATE': <function Parser.<lambda>>, 'COMMENT': <function Parser.<lambda>>, 'CONTAINS': <function Parser.<lambda>>, 'COPY': <function Parser.<lambda>>, 'DATABLOCKSIZE': <function Parser.<lambda>>, 'DATA_DELETION': <function Parser.<lambda>>, 'DEFINER': <function Parser.<lambda>>, 'DETERMINISTIC': <function Parser.<lambda>>, 'DISTRIBUTED': <function Parser.<lambda>>, 'DUPLICATE': <function Parser.<lambda>>, 'DYNAMIC': <function Parser.<lambda>>, 'DISTKEY': <function Parser.<lambda>>, 'DISTSTYLE': <function Parser.<lambda>>, 'EMPTY': <function Parser.<lambda>>, 'ENGINE': <function Parser.<lambda>>, 'EXECUTE': <function Parser.<lambda>>, 'EXTERNAL': <function Parser.<lambda>>, 'FALLBACK': <function Parser.<lambda>>, 'FORMAT': <function Parser.<lambda>>, 'FREESPACE': <function Parser.<lambda>>, 'GLOBAL': <function Parser.<lambda>>, 'HEAP': <function Parser.<lambda>>, 'ICEBERG': <function Parser.<lambda>>, 'IMMUTABLE': <function Parser.<lambda>>, 'INHERITS': <function Parser.<lambda>>, 'INPUT': <function Parser.<lambda>>, 'JOURNAL': <function Parser.<lambda>>, 'LANGUAGE': <function Parser.<lambda>>, 'LAYOUT': <function Parser.<lambda>>, 'LIFETIME': <function Parser.<lambda>>, 'LIKE': <function Parser.<lambda>>, 'LOCATION': <function Parser.<lambda>>, 'LOCK': <function Parser.<lambda>>, 'LOCKING': <function Parser.<lambda>>, 'LOG': <function Parser.<lambda>>, 'MATERIALIZED': <function Parser.<lambda>>, 'MERGEBLOCKRATIO': <function Parser.<lambda>>, 'MODIFIES': <function Parser.<lambda>>, 'MULTISET': <function Parser.<lambda>>, 'NO': <function Parser.<lambda>>, 'ON': <function Parser.<lambda>>, 'ORDER BY': <function Parser.<lambda>>, 'OUTPUT': <function Parser.<lambda>>, 'PARTITION': <function Parser.<lambda>>, 'PARTITION BY': <function Parser.<lambda>>, 'PARTITIONED BY': <function Parser.<lambda>>, 'PARTITIONED_BY': <function Parser.<lambda>>, 'PRIMARY KEY': <function Parser.<lambda>>, 'RANGE': <function Parser.<lambda>>, 'READS': <function Parser.<lambda>>, 'REMOTE': <function Parser.<lambda>>, 'RETURNS': <function Parser.<lambda>>, 'STRICT': <function Parser.<lambda>>, 'STREAMING': <function Parser.<lambda>>, 'ROW': <function Parser.<lambda>>, 'ROW_FORMAT': <function Parser.<lambda>>, 'SAMPLE': <function Parser.<lambda>>, 'SECURE': <function Parser.<lambda>>, 'SECURITY': <function Parser.<lambda>>, 'SET': <function Parser.<lambda>>, 'SETTINGS': <function Parser.<lambda>>, 'SHARING': <function Parser.<lambda>>, 'SORTKEY': <function Parser.<lambda>>, 'SOURCE': <function Parser.<lambda>>, 'STABLE': <function Parser.<lambda>>, 'STORED': <function Parser.<lambda>>, 'SYSTEM_VERSIONING': <function Parser.<lambda>>, 'TBLPROPERTIES': <function Parser.<lambda>>, 'TEMP': <function Parser.<lambda>>, 'TEMPORARY': <function Parser.<lambda>>, 'TO': <function Parser.<lambda>>, 'TRANSIENT': <function Parser.<lambda>>, 'TRANSFORM': <function Parser.<lambda>>, 'TTL': <function Parser.<lambda>>, 'USING': <function Parser.<lambda>>, 'UNLOGGED': <function Parser.<lambda>>, 'VOLATILE': <function Parser.<lambda>>, 'WITH': <function Parser.<lambda>>, 'NOT DETERMINISTIC': <function BigQuery.Parser.<lambda>>, 'OPTIONS': <function BigQuery.Parser.<lambda>>}
CONSTRAINT_PARSERS = {'AUTOINCREMENT': <function Parser.<lambda>>, 'AUTO_INCREMENT': <function Parser.<lambda>>, 'CASESPECIFIC': <function Parser.<lambda>>, 'CHARACTER SET': <function Parser.<lambda>>, 'CHECK': <function Parser.<lambda>>, 'COLLATE': <function Parser.<lambda>>, 'COMMENT': <function Parser.<lambda>>, 'COMPRESS': <function Parser.<lambda>>, 'CLUSTERED': <function Parser.<lambda>>, 'NONCLUSTERED': <function Parser.<lambda>>, 'DEFAULT': <function Parser.<lambda>>, 'ENCODE': <function Parser.<lambda>>, 'EPHEMERAL': <function Parser.<lambda>>, 'EXCLUDE': <function Parser.<lambda>>, 'FOREIGN KEY': <function Parser.<lambda>>, 'FORMAT': <function Parser.<lambda>>, 'GENERATED': <function Parser.<lambda>>, 'IDENTITY': <function Parser.<lambda>>, 'INLINE': <function Parser.<lambda>>, 'LIKE': <function Parser.<lambda>>, 'NOT': <function Parser.<lambda>>, 'NULL': <function Parser.<lambda>>, 'ON': <function Parser.<lambda>>, 'PATH': <function Parser.<lambda>>, 'PERIOD': <function Parser.<lambda>>, 'PRIMARY KEY': <function Parser.<lambda>>, 'REFERENCES': <function Parser.<lambda>>, 'TITLE': <function Parser.<lambda>>, 'TTL': <function Parser.<lambda>>, 'UNIQUE': <function Parser.<lambda>>, 'UPPERCASE': <function Parser.<lambda>>, 'WITH': <function Parser.<lambda>>, 'OPTIONS': <function BigQuery.Parser.<lambda>>}
RANGE_PARSERS = {<TokenType.AT_GT: 'AT_GT'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.BETWEEN: 'BETWEEN'>: <function Parser.<lambda>>, <TokenType.GLOB: 'GLOB'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.ILIKE: 'ILIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.IN: 'IN'>: <function Parser.<lambda>>, <TokenType.IRLIKE: 'IRLIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.IS: 'IS'>: <function Parser.<lambda>>, <TokenType.LIKE: 'LIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.LT_AT: 'LT_AT'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.RLIKE: 'RLIKE'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.SIMILAR_TO: 'SIMILAR_TO'>: <function binary_range_parser.<locals>._parse_binary_range>, <TokenType.FOR: 'FOR'>: <function Parser.<lambda>>}
NULL_TOKENS = {<TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.NULL: 'NULL'>}
STATEMENT_PARSERS = {<TokenType.ALTER: 'ALTER'>: <function Parser.<lambda>>, <TokenType.BEGIN: 'BEGIN'>: <function Parser.<lambda>>, <TokenType.CACHE: 'CACHE'>: <function Parser.<lambda>>, <TokenType.COMMENT: 'COMMENT'>: <function Parser.<lambda>>, <TokenType.COMMIT: 'COMMIT'>: <function Parser.<lambda>>, <TokenType.COPY: 'COPY'>: <function Parser.<lambda>>, <TokenType.CREATE: 'CREATE'>: <function Parser.<lambda>>, <TokenType.DELETE: 'DELETE'>: <function Parser.<lambda>>, <TokenType.DESC: 'DESC'>: <function Parser.<lambda>>, <TokenType.DESCRIBE: 'DESCRIBE'>: <function Parser.<lambda>>, <TokenType.DROP: 'DROP'>: <function Parser.<lambda>>, <TokenType.GRANT: 'GRANT'>: <function Parser.<lambda>>, <TokenType.INSERT: 'INSERT'>: <function Parser.<lambda>>, <TokenType.KILL: 'KILL'>: <function Parser.<lambda>>, <TokenType.LOAD: 'LOAD'>: <function Parser.<lambda>>, <TokenType.MERGE: 'MERGE'>: <function Parser.<lambda>>, <TokenType.PIVOT: 'PIVOT'>: <function Parser.<lambda>>, <TokenType.PRAGMA: 'PRAGMA'>: <function Parser.<lambda>>, <TokenType.REFRESH: 'REFRESH'>: <function Parser.<lambda>>, <TokenType.ROLLBACK: 'ROLLBACK'>: <function Parser.<lambda>>, <TokenType.SET: 'SET'>: <function Parser.<lambda>>, <TokenType.TRUNCATE: 'TRUNCATE'>: <function Parser.<lambda>>, <TokenType.UNCACHE: 'UNCACHE'>: <function Parser.<lambda>>, <TokenType.UPDATE: 'UPDATE'>: <function Parser.<lambda>>, <TokenType.USE: 'USE'>: <function Parser.<lambda>>, <TokenType.SEMICOLON: 'SEMICOLON'>: <function Parser.<lambda>>, <TokenType.ELSE: 'ELSE'>: <function BigQuery.Parser.<lambda>>, <TokenType.END: 'END'>: <function BigQuery.Parser.<lambda>>, <TokenType.FOR: 'FOR'>: <function BigQuery.Parser.<lambda>>}
BRACKET_OFFSETS = {'OFFSET': (0, False), 'ORDINAL': (1, False), 'SAFE_OFFSET': (0, True), 'SAFE_ORDINAL': (1, True)}
ID_VAR_TOKENS = {<TokenType.TOP: 'TOP'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.SOME: 'SOME'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.UNNEST: 'UNNEST'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.YEAR: 'YEAR'>, <TokenType.CUBE: 'CUBE'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.FUNCTION: 'FUNCTION'>, <TokenType.END: 'END'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.FIRST: 'FIRST'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.DATE: 'DATE'>, <TokenType.XML: 'XML'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.IS: 'IS'>, <TokenType.LEFT: 'LEFT'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.ASC: 'ASC'>, <TokenType.TAG: 'TAG'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.ROW: 'ROW'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.UINT128: 'UINT128'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.SET: 'SET'>, <TokenType.KILL: 'KILL'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.RIGHT: 'RIGHT'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.DESC: 'DESC'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.DATE32: 'DATE32'>, <TokenType.FINAL: 'FINAL'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.RENAME: 'RENAME'>, <TokenType.TIME: 'TIME'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.TABLE: 'TABLE'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.SHOW: 'SHOW'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.NATURAL: 'NATURAL'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.INET: 'INET'>, <TokenType.DECIMAL32: 'DECIMAL32'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.INT128: 'INT128'>, <TokenType.MODEL: 'MODEL'>, <TokenType.DIV: 'DIV'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.JSON: 'JSON'>, <TokenType.CASE: 'CASE'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.ANY: 'ANY'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.IPV6: 'IPV6'>, <TokenType.DELETE: 'DELETE'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.IPV4: 'IPV4'>, <TokenType.FULL: 'FULL'>, <TokenType.ALL: 'ALL'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.JSONB: 'JSONB'>, <TokenType.FALSE: 'FALSE'>, <TokenType.ROWS: 'ROWS'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.ASOF: 'ASOF'>, <TokenType.RANGE: 'RANGE'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.UUID: 'UUID'>, <TokenType.COPY: 'COPY'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.USE: 'USE'>, <TokenType.INDEX: 'INDEX'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.SEMI: 'SEMI'>, <TokenType.VAR: 'VAR'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.LOAD: 'LOAD'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.ANTI: 'ANTI'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.MAP: 'MAP'>, <TokenType.BIT: 'BIT'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.VIEW: 'VIEW'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.ENUM: 'ENUM'>, <TokenType.BINARY: 'BINARY'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.APPLY: 'APPLY'>, <TokenType.KEEP: 'KEEP'>, <TokenType.LIST: 'LIST'>, <TokenType.UINT: 'UINT'>, <TokenType.DECIMAL64: 'DECIMAL64'>, <TokenType.NULL: 'NULL'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.WINDOW: 'WINDOW'>, <TokenType.CHAR: 'CHAR'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.INT: 'INT'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.NESTED: 'NESTED'>, <TokenType.NEXT: 'NEXT'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.OFFSET: 'OFFSET'>, <TokenType.FILTER: 'FILTER'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.SUPER: 'SUPER'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.INT256: 'INT256'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.DECIMAL128: 'DECIMAL128'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.TEXT: 'TEXT'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.UINT256: 'UINT256'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.NAME: 'NAME'>, <TokenType.CACHE: 'CACHE'>, <TokenType.MERGE: 'MERGE'>, <TokenType.TRUE: 'TRUE'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.MONEY: 'MONEY'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>}
TABLE_ALIAS_TOKENS = {<TokenType.TOP: 'TOP'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.SOME: 'SOME'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.UNNEST: 'UNNEST'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.YEAR: 'YEAR'>, <TokenType.CUBE: 'CUBE'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.FUNCTION: 'FUNCTION'>, <TokenType.END: 'END'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.FIRST: 'FIRST'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.DATE: 'DATE'>, <TokenType.XML: 'XML'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.IS: 'IS'>, <TokenType.SEQUENCE: 'SEQUENCE'>, <TokenType.ASC: 'ASC'>, <TokenType.TAG: 'TAG'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.ROW: 'ROW'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.TIMESTAMPNTZ: 'TIMESTAMPNTZ'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.UINT128: 'UINT128'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.ROLLUP: 'ROLLUP'>, <TokenType.WAREHOUSE: 'WAREHOUSE'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.SET: 'SET'>, <TokenType.KILL: 'KILL'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.DESC: 'DESC'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.DATE32: 'DATE32'>, <TokenType.FINAL: 'FINAL'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.RENAME: 'RENAME'>, <TokenType.TIME: 'TIME'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.TABLE: 'TABLE'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.SHOW: 'SHOW'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.INET: 'INET'>, <TokenType.DECIMAL32: 'DECIMAL32'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.INT128: 'INT128'>, <TokenType.MODEL: 'MODEL'>, <TokenType.DIV: 'DIV'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.JSON: 'JSON'>, <TokenType.CASE: 'CASE'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.ANY: 'ANY'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.REPLACE: 'REPLACE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.IPV6: 'IPV6'>, <TokenType.DELETE: 'DELETE'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.IPV4: 'IPV4'>, <TokenType.ALL: 'ALL'>, <TokenType.TDIGEST: 'TDIGEST'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.JSONB: 'JSONB'>, <TokenType.FALSE: 'FALSE'>, <TokenType.ROWS: 'ROWS'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.RANGE: 'RANGE'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.UUID: 'UUID'>, <TokenType.COPY: 'COPY'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.USE: 'USE'>, <TokenType.INDEX: 'INDEX'>, <TokenType.VECTOR: 'VECTOR'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.OPERATOR: 'OPERATOR'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.TRUNCATE: 'TRUNCATE'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.VAR: 'VAR'>, <TokenType.SEMI: 'SEMI'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.LOAD: 'LOAD'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.ANTI: 'ANTI'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.MAP: 'MAP'>, <TokenType.BIT: 'BIT'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.VIEW: 'VIEW'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.ENUM: 'ENUM'>, <TokenType.BINARY: 'BINARY'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.KEEP: 'KEEP'>, <TokenType.LIST: 'LIST'>, <TokenType.UINT: 'UINT'>, <TokenType.DECIMAL64: 'DECIMAL64'>, <TokenType.NULL: 'NULL'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.CHAR: 'CHAR'>, <TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.INT: 'INT'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.BPCHAR: 'BPCHAR'>, <TokenType.STRAIGHT_JOIN: 'STRAIGHT_JOIN'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.IDENTIFIER: 'IDENTIFIER'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.NESTED: 'NESTED'>, <TokenType.NEXT: 'NEXT'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.FILTER: 'FILTER'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.SUPER: 'SUPER'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.INT256: 'INT256'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.DECIMAL128: 'DECIMAL128'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.TEXT: 'TEXT'>, <TokenType.STREAMLIT: 'STREAMLIT'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.UINT256: 'UINT256'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.NAME: 'NAME'>, <TokenType.CACHE: 'CACHE'>, <TokenType.MERGE: 'MERGE'>, <TokenType.TRUE: 'TRUE'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>, <TokenType.MONEY: 'MONEY'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>}
SHOW_TRIE: Dict = {}
SET_TRIE: Dict = {'GLOBAL': {0: True}, 'LOCAL': {0: True}, 'SESSION': {0: True}, 'TRANSACTION': {0: True}}

##### Inherited Members

sqlglot.parser.Parser
  Parser
  STRUCT_TYPE_TOKENS
  ENUM_TYPE_TOKENS
  AGGREGATE_TYPE_TOKENS
  TYPE_TOKENS
  SIGNED_TO_UNSIGNED_TYPE_TOKEN
  SUBQUERY_PREDICATES
  RESERVED_TOKENS
  DB_CREATABLES
  CREATABLES
  ALTERABLES
  INTERVAL_VARS
  ALIAS_TOKENS
  ARRAY_CONSTRUCTORS
  COMMENT_TABLE_ALIAS_TOKENS
  UPDATE_ALIAS_TOKENS
  TRIM_TYPES
  FUNC_TOKENS
  CONJUNCTION
  ASSIGNMENT
  DISJUNCTION
  EQUALITY
  COMPARISON
  BITWISE
  TERM
  FACTOR
  EXPONENT
  TIMES
  TIMESTAMPS
  SET_OPERATIONS
  JOIN_METHODS
  JOIN_SIDES
  JOIN_KINDS
  JOIN_HINTS
  LAMBDAS
  COLUMN_OPERATORS
  EXPRESSION_PARSERS
  UNARY_PARSERS
  STRING_PARSERS
  NUMERIC_PARSERS
  PRIMARY_PARSERS
  PLACEHOLDER_PARSERS
  ALTER_PARSERS
  ALTER_ALTER_PARSERS
  SCHEMA_UNNAMED_CONSTRAINTS
  NO_PAREN_FUNCTION_PARSERS
  INVALID_FUNC_NAME_TOKENS
  FUNCTIONS_WITH_ALIASED_ARGS
  KEY_VALUE_DEFINITIONS
  QUERY_MODIFIER_PARSERS
  SET_PARSERS
  SHOW_PARSERS
  TYPE_LITERAL_PARSERS
  TYPE_CONVERTERS
  DDL_SELECT_TOKENS
  PRE_VOLATILE_TOKENS
  TRANSACTION_KIND
  TRANSACTION_CHARACTERISTICS
  CONFLICT_ACTIONS
  CREATE_SEQUENCE
  ISOLATED_LOADING_OPTIONS
  USABLES
  CAST_ACTIONS
  SCHEMA_BINDING_OPTIONS
  KEY_CONSTRAINT_OPTIONS
  INSERT_ALTERNATIVES
  CLONE_KEYWORDS
  HISTORICAL_DATA_PREFIX
  HISTORICAL_DATA_KIND
  OPCLASS_FOLLOW_KEYWORDS
  OPTYPE_FOLLOW_TOKENS
  TABLE_INDEX_HINT_TOKENS
  VIEW_ATTRIBUTES
  WINDOW_ALIAS_TOKENS
  WINDOW_BEFORE_PAREN_TOKENS
  WINDOW_SIDES
  JSON_KEY_VALUE_SEPARATOR_TOKENS
  FETCH_TOKENS
  ADD_CONSTRAINT_TOKENS
  DISTINCT_TOKENS
  UNNEST_OFFSET_ALIAS_TOKENS
  SELECT_START_TOKENS
  COPY_INTO_VARLEN_OPTIONS
  IS_JSON_PREDICATE_KIND
  ODBC_DATETIME_LITERALS
  ON_CONDITION_TOKENS
  PRIVILEGE_FOLLOW_TOKENS
  STRICT_CAST
  IDENTIFY_PIVOT_STRINGS
  ALTER_TABLE_ADD_REQUIRED_FOR_EACH_COLUMN
  TABLESAMPLE_CSV
  DEFAULT_SAMPLING_METHOD
  SET_REQUIRES_ASSIGNMENT_DELIMITER
  TRIM_PATTERN_FIRST
  STRING_ALIASES
  MODIFIERS_ATTACHED_TO_SET_OP
  SET_OP_MODIFIERS
  NO_PAREN_IF_COMMANDS
  JSON_ARROWS_REQUIRE_JSON_TYPE
  COLON_IS_VARIANT_EXTRACT
  VALUES_FOLLOWED_BY_PAREN
  INTERVAL_SPANS
  SUPPORTS_PARTITION_SELECTION
  error_level
  error_message_context
  max_errors
  dialect
  reset
  parse
  parse_into
  check_errors
  raise_error
  expression
  validate_expression
  errors
  sql

class BigQuery.Generator(sqlglot.generator.Generator): View Source

    630    class Generator(generator.Generator):
    631        INTERVAL_ALLOWS_PLURAL_FORM = False
    632        JOIN_HINTS = False
    633        QUERY_HINTS = False
    634        TABLE_HINTS = False
    635        LIMIT_FETCH = "LIMIT"
    636        RENAME_TABLE_WITH_DB = False
    637        NVL2_SUPPORTED = False
    638        UNNEST_WITH_ORDINALITY = False
    639        COLLATE_IS_FUNC = True
    640        LIMIT_ONLY_LITERALS = True
    641        SUPPORTS_TABLE_ALIAS_COLUMNS = False
    642        UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
    643        JSON_KEY_VALUE_PAIR_SEP = ","
    644        NULL_ORDERING_SUPPORTED = False
    645        IGNORE_NULLS_IN_FUNC = True
    646        JSON_PATH_SINGLE_QUOTE_ESCAPE = True
    647        CAN_IMPLEMENT_ARRAY_ANY = True
    648        SUPPORTS_TO_NUMBER = False
    649        NAMED_PLACEHOLDER_TOKEN = "@"
    650        HEX_FUNC = "TO_HEX"
    651        WITH_PROPERTIES_PREFIX = "OPTIONS"
    652        SUPPORTS_EXPLODING_PROJECTIONS = False
    653        EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
    654
    655        TRANSFORMS = {
    656            **generator.Generator.TRANSFORMS,
    657            exp.ApproxDistinct: rename_func("APPROX_COUNT_DISTINCT"),
    658            exp.ArgMax: arg_max_or_min_no_count("MAX_BY"),
    659            exp.ArgMin: arg_max_or_min_no_count("MIN_BY"),
    660            exp.Array: inline_array_unless_query,
    661            exp.ArrayContains: _array_contains_sql,
    662            exp.ArrayFilter: filter_array_using_unnest,
    663            exp.ArraySize: rename_func("ARRAY_LENGTH"),
    664            exp.Cast: transforms.preprocess([transforms.remove_precision_parameterized_types]),
    665            exp.CollateProperty: lambda self, e: (
    666                f"DEFAULT COLLATE {self.sql(e, 'this')}"
    667                if e.args.get("default")
    668                else f"COLLATE {self.sql(e, 'this')}"
    669            ),
    670            exp.Commit: lambda *_: "COMMIT TRANSACTION",
    671            exp.CountIf: rename_func("COUNTIF"),
    672            exp.Create: _create_sql,
    673            exp.CTE: transforms.preprocess([_pushdown_cte_column_names]),
    674            exp.DateAdd: date_add_interval_sql("DATE", "ADD"),
    675            exp.DateDiff: lambda self, e: self.func(
    676                "DATE_DIFF", e.this, e.expression, unit_to_var(e)
    677            ),
    678            exp.DateFromParts: rename_func("DATE"),
    679            exp.DateStrToDate: datestrtodate_sql,
    680            exp.DateSub: date_add_interval_sql("DATE", "SUB"),
    681            exp.DatetimeAdd: date_add_interval_sql("DATETIME", "ADD"),
    682            exp.DatetimeSub: date_add_interval_sql("DATETIME", "SUB"),
    683            exp.DateTrunc: lambda self, e: self.func("DATE_TRUNC", e.this, e.text("unit")),
    684            exp.FromTimeZone: lambda self, e: self.func(
    685                "DATETIME", self.func("TIMESTAMP", e.this, e.args.get("zone")), "'UTC'"
    686            ),
    687            exp.GenerateSeries: rename_func("GENERATE_ARRAY"),
    688            exp.GroupConcat: rename_func("STRING_AGG"),
    689            exp.Hex: lambda self, e: self.func("UPPER", self.func("TO_HEX", self.sql(e, "this"))),
    690            exp.If: if_sql(false_value="NULL"),
    691            exp.ILike: no_ilike_sql,
    692            exp.IntDiv: rename_func("DIV"),
    693            exp.JSONFormat: rename_func("TO_JSON_STRING"),
    694            exp.Max: max_or_greatest,
    695            exp.MD5: lambda self, e: self.func("TO_HEX", self.func("MD5", e.this)),
    696            exp.MD5Digest: rename_func("MD5"),
    697            exp.Min: min_or_least,
    698            exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}",
    699            exp.RegexpExtract: lambda self, e: self.func(
    700                "REGEXP_EXTRACT",
    701                e.this,
    702                e.expression,
    703                e.args.get("position"),
    704                e.args.get("occurrence"),
    705            ),
    706            exp.RegexpReplace: regexp_replace_sql,
    707            exp.RegexpLike: rename_func("REGEXP_CONTAINS"),
    708            exp.ReturnsProperty: _returnsproperty_sql,
    709            exp.Rollback: lambda *_: "ROLLBACK TRANSACTION",
    710            exp.Select: transforms.preprocess(
    711                [
    712                    transforms.explode_to_unnest(),
    713                    transforms.unqualify_unnest,
    714                    transforms.eliminate_distinct_on,
    715                    _alias_ordered_group,
    716                    transforms.eliminate_semi_and_anti_joins,
    717                ]
    718            ),
    719            exp.SHA: rename_func("SHA1"),
    720            exp.SHA2: sha256_sql,
    721            exp.StabilityProperty: lambda self, e: (
    722                "DETERMINISTIC" if e.name == "IMMUTABLE" else "NOT DETERMINISTIC"
    723            ),
    724            exp.StrToDate: _str_to_datetime_sql,
    725            exp.StrToTime: _str_to_datetime_sql,
    726            exp.TimeAdd: date_add_interval_sql("TIME", "ADD"),
    727            exp.TimeFromParts: rename_func("TIME"),
    728            exp.TimestampFromParts: rename_func("DATETIME"),
    729            exp.TimeSub: date_add_interval_sql("TIME", "SUB"),
    730            exp.TimestampAdd: date_add_interval_sql("TIMESTAMP", "ADD"),
    731            exp.TimestampDiff: rename_func("TIMESTAMP_DIFF"),
    732            exp.TimestampSub: date_add_interval_sql("TIMESTAMP", "SUB"),
    733            exp.TimeStrToTime: timestrtotime_sql,
    734            exp.Transaction: lambda *_: "BEGIN TRANSACTION",
    735            exp.TsOrDsAdd: _ts_or_ds_add_sql,
    736            exp.TsOrDsDiff: _ts_or_ds_diff_sql,
    737            exp.TsOrDsToTime: rename_func("TIME"),
    738            exp.TsOrDsToTimestamp: rename_func("DATETIME"),
    739            exp.Unhex: rename_func("FROM_HEX"),
    740            exp.UnixDate: rename_func("UNIX_DATE"),
    741            exp.UnixToTime: _unix_to_time_sql,
    742            exp.Uuid: lambda *_: "GENERATE_UUID()",
    743            exp.Values: _derived_table_values_to_unnest,
    744            exp.VariancePop: rename_func("VAR_POP"),
    745        }
    746
    747        SUPPORTED_JSON_PATH_PARTS = {
    748            exp.JSONPathKey,
    749            exp.JSONPathRoot,
    750            exp.JSONPathSubscript,
    751        }
    752
    753        TYPE_MAPPING = {
    754            **generator.Generator.TYPE_MAPPING,
    755            exp.DataType.Type.BIGDECIMAL: "BIGNUMERIC",
    756            exp.DataType.Type.BIGINT: "INT64",
    757            exp.DataType.Type.BINARY: "BYTES",
    758            exp.DataType.Type.BOOLEAN: "BOOL",
    759            exp.DataType.Type.CHAR: "STRING",
    760            exp.DataType.Type.DECIMAL: "NUMERIC",
    761            exp.DataType.Type.DOUBLE: "FLOAT64",
    762            exp.DataType.Type.FLOAT: "FLOAT64",
    763            exp.DataType.Type.INT: "INT64",
    764            exp.DataType.Type.NCHAR: "STRING",
    765            exp.DataType.Type.NVARCHAR: "STRING",
    766            exp.DataType.Type.SMALLINT: "INT64",
    767            exp.DataType.Type.TEXT: "STRING",
    768            exp.DataType.Type.TIMESTAMP: "DATETIME",
    769            exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
    770            exp.DataType.Type.TIMESTAMPLTZ: "TIMESTAMP",
    771            exp.DataType.Type.TINYINT: "INT64",
    772            exp.DataType.Type.ROWVERSION: "BYTES",
    773            exp.DataType.Type.UUID: "STRING",
    774            exp.DataType.Type.VARBINARY: "BYTES",
    775            exp.DataType.Type.VARCHAR: "STRING",
    776            exp.DataType.Type.VARIANT: "ANY TYPE",
    777        }
    778
    779        PROPERTIES_LOCATION = {
    780            **generator.Generator.PROPERTIES_LOCATION,
    781            exp.PartitionedByProperty: exp.Properties.Location.POST_SCHEMA,
    782            exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED,
    783        }
    784
    785        # WINDOW comes after QUALIFY
    786        # https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#window_clause
    787        AFTER_HAVING_MODIFIER_TRANSFORMS = {
    788            "qualify": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["qualify"],
    789            "windows": generator.Generator.AFTER_HAVING_MODIFIER_TRANSFORMS["windows"],
    790        }
    791
    792        # from: https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#reserved_keywords
    793        RESERVED_KEYWORDS = {
    794            "all",
    795            "and",
    796            "any",
    797            "array",
    798            "as",
    799            "asc",
    800            "assert_rows_modified",
    801            "at",
    802            "between",
    803            "by",
    804            "case",
    805            "cast",
    806            "collate",
    807            "contains",
    808            "create",
    809            "cross",
    810            "cube",
    811            "current",
    812            "default",
    813            "define",
    814            "desc",
    815            "distinct",
    816            "else",
    817            "end",
    818            "enum",
    819            "escape",
    820            "except",
    821            "exclude",
    822            "exists",
    823            "extract",
    824            "false",
    825            "fetch",
    826            "following",
    827            "for",
    828            "from",
    829            "full",
    830            "group",
    831            "grouping",
    832            "groups",
    833            "hash",
    834            "having",
    835            "if",
    836            "ignore",
    837            "in",
    838            "inner",
    839            "intersect",
    840            "interval",
    841            "into",
    842            "is",
    843            "join",
    844            "lateral",
    845            "left",
    846            "like",
    847            "limit",
    848            "lookup",
    849            "merge",
    850            "natural",
    851            "new",
    852            "no",
    853            "not",
    854            "null",
    855            "nulls",
    856            "of",
    857            "on",
    858            "or",
    859            "order",
    860            "outer",
    861            "over",
    862            "partition",
    863            "preceding",
    864            "proto",
    865            "qualify",
    866            "range",
    867            "recursive",
    868            "respect",
    869            "right",
    870            "rollup",
    871            "rows",
    872            "select",
    873            "set",
    874            "some",
    875            "struct",
    876            "tablesample",
    877            "then",
    878            "to",
    879            "treat",
    880            "true",
    881            "unbounded",
    882            "union",
    883            "unnest",
    884            "using",
    885            "when",
    886            "where",
    887            "window",
    888            "with",
    889            "within",
    890        }
    891
    892        def mod_sql(self, expression: exp.Mod) -> str:
    893            this = expression.this
    894            expr = expression.expression
    895            return self.func(
    896                "MOD",
    897                this.unnest() if isinstance(this, exp.Paren) else this,
    898                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    899            )
    900
    901        def column_parts(self, expression: exp.Column) -> str:
    902            if expression.meta.get("quoted_column"):
    903                # If a column reference is of the form `dataset.table`.name, we need
    904                # to preserve the quoted table path, otherwise the reference breaks
    905                table_parts = ".".join(p.name for p in expression.parts[:-1])
    906                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    907                return f"{table_path}.{self.sql(expression, 'this')}"
    908
    909            return super().column_parts(expression)
    910
    911        def table_parts(self, expression: exp.Table) -> str:
    912            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    913            # we need to make sure the correct quoting is used in each case.
    914            #
    915            # For example, if there is a CTE x that clashes with a schema name, then the former will
    916            # return the table y in that schema, whereas the latter will return the CTE's y column:
    917            #
    918            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    919            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    920            if expression.meta.get("quoted_table"):
    921                table_parts = ".".join(p.name for p in expression.parts)
    922                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    923
    924            return super().table_parts(expression)
    925
    926        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    927            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    928                func_name = "FORMAT_DATETIME"
    929            else:
    930                func_name = "FORMAT_DATE"
    931            this = (
    932                expression.this
    933                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    934                else expression
    935            )
    936            return self.func(func_name, self.format_time(expression), this.this)
    937
    938        def eq_sql(self, expression: exp.EQ) -> str:
    939            # Operands of = cannot be NULL in BigQuery
    940            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    941                if not isinstance(expression.parent, exp.Update):
    942                    return "NULL"
    943
    944            return self.binary(expression, "=")
    945
    946        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    947            parent = expression.parent
    948
    949            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    950            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    951            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    952                return self.func(
    953                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    954                )
    955
    956            return super().attimezone_sql(expression)
    957
    958        def trycast_sql(self, expression: exp.TryCast) -> str:
    959            return self.cast_sql(expression, safe_prefix="SAFE_")
    960
    961        def bracket_sql(self, expression: exp.Bracket) -> str:
    962            this = expression.this
    963            expressions = expression.expressions
    964
    965            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    966                arg = expressions[0]
    967                if arg.type is None:
    968                    from sqlglot.optimizer.annotate_types import annotate_types
    969
    970                    arg = annotate_types(arg)
    971
    972                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    973                    # BQ doesn't support bracket syntax with string values for structs
    974                    return f"{self.sql(this)}.{arg.name}"
    975
    976            expressions_sql = self.expressions(expression, flat=True)
    977            offset = expression.args.get("offset")
    978
    979            if offset == 0:
    980                expressions_sql = f"OFFSET({expressions_sql})"
    981            elif offset == 1:
    982                expressions_sql = f"ORDINAL({expressions_sql})"
    983            elif offset is not None:
    984                self.unsupported(f"Unsupported array offset: {offset}")
    985
    986            if expression.args.get("safe"):
    987                expressions_sql = f"SAFE_{expressions_sql}"
    988
    989            return f"{self.sql(this)}[{expressions_sql}]"
    990
    991        def in_unnest_op(self, expression: exp.Unnest) -> str:
    992            return self.sql(expression)
    993
    994        def version_sql(self, expression: exp.Version) -> str:
    995            if expression.name == "TIMESTAMP":
    996                expression.set("this", "SYSTEM_TIME")
    997            return super().version_sql(expression)

Generator converts a given syntax tree to the corresponding SQL string.

###### Arguments:

- pretty: Whether to format the produced SQL string. Default: False.
- identify: Determines when an identifier should be quoted. Possible values are: False (default): Never quote, except in cases where it's mandatory by the dialect. True or 'always': Always quote. 'safe': Only quote identifiers that are case insensitive.
- normalize: Whether to normalize identifiers to lowercase. Default: False.
- pad: The pad size in a formatted string. For example, this affects the indentation of a projection in a query, relative to its nesting level. Default: 2.
- indent: The indentation size in a formatted string. For example, this affects the indentation of subqueries and filters under a `WHERE` clause. Default: 2.
- normalize_functions: How to normalize function names. Possible values are: "upper" or True (default): Convert names to uppercase. "lower": Convert names to lowercase. False: Disables function name normalization.
- unsupported_level: Determines the generator's behavior when it encounters unsupported expressions. Default ErrorLevel.WARN.
- max_unsupported: Maximum number of unsupported messages to include in a raised UnsupportedError. This is only relevant if unsupported_level is ErrorLevel.RAISE. Default: 3
- leading_comma: Whether the comma is leading or trailing in select expressions. This is only relevant when generating in pretty mode. Default: False
- max_text_width: The max number of characters in a segment before creating new lines in pretty mode. The default is on the smaller end because the length only represents a segment and not the true line length. Default: 80
- comments: Whether to preserve comments in the output SQL code. Default: True

INTERVAL_ALLOWS_PLURAL_FORM = False
JOIN_HINTS = False
QUERY_HINTS = False
TABLE_HINTS = False
LIMIT_FETCH = 'LIMIT'
RENAME_TABLE_WITH_DB = False
NVL2_SUPPORTED = False
UNNEST_WITH_ORDINALITY = False
COLLATE_IS_FUNC = True
LIMIT_ONLY_LITERALS = True
SUPPORTS_TABLE_ALIAS_COLUMNS = False
UNPIVOT_ALIASES_ARE_IDENTIFIERS = False
JSON_KEY_VALUE_PAIR_SEP = ','
NULL_ORDERING_SUPPORTED = False
IGNORE_NULLS_IN_FUNC = True
JSON_PATH_SINGLE_QUOTE_ESCAPE = True
CAN_IMPLEMENT_ARRAY_ANY = True
SUPPORTS_TO_NUMBER = False
NAMED_PLACEHOLDER_TOKEN = '@'
HEX_FUNC = 'TO_HEX'
WITH_PROPERTIES_PREFIX = 'OPTIONS'
SUPPORTS_EXPLODING_PROJECTIONS = False
EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE = False
TRANSFORMS = {<class 'sqlglot.expressions.JSONPathKey'>: <function <lambda>>, <class 'sqlglot.expressions.JSONPathRoot'>: <function <lambda>>, <class 'sqlglot.expressions.JSONPathSubscript'>: <function <lambda>>, <class 'sqlglot.expressions.AllowedValuesProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ArrayContainsAll'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ArrayOverlaps'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.AutoRefreshProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.BackupProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CaseSpecificColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CollateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CommentColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ConnectByRoot'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DateFormatColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DefaultColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DynamicProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EmptyProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EncodeColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EphemeralColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExcludeColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Except'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExternalProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.GlobalProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.HeapProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IcebergProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InheritsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InlineLengthColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Intersect'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IntervalSpan'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LanguageProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LocationProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LogProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.MaterializedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NonClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NotForReplicationColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnCommitProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnUpdateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Operator'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OutputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PathColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PivotAny'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ProjectionPolicyColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ReturnsProperty'>: <function _returnsproperty_sql>, <class 'sqlglot.expressions.SampleProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SecureProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SecurityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SetConfigProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SettingsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SharingProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SqlReadWriteProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StabilityProperty'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Stream'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StreamingTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StrictProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TemporaryProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TagColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TitleColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ToMap'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ToTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransformModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransientProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Union'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UnloggedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.Uuid'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.UppercaseColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ViewAttributeProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VolatileProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithSchemaBindingProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithOperator'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ApproxDistinct'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArgMax'>: <function arg_max_or_min_no_count.<locals>._arg_max_or_min_sql>, <class 'sqlglot.expressions.ArgMin'>: <function arg_max_or_min_no_count.<locals>._arg_max_or_min_sql>, <class 'sqlglot.expressions.Array'>: <function inline_array_unless_query>, <class 'sqlglot.expressions.ArrayContains'>: <function _array_contains_sql>, <class 'sqlglot.expressions.ArrayFilter'>: <function filter_array_using_unnest>, <class 'sqlglot.expressions.ArraySize'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Cast'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.CollateProperty'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Commit'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.CountIf'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Create'>: <function _create_sql>, <class 'sqlglot.expressions.CTE'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.DateAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DateDiff'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.DateFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DateStrToDate'>: <function datestrtodate_sql>, <class 'sqlglot.expressions.DateSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DatetimeAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DatetimeSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.DateTrunc'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.FromTimeZone'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.GenerateSeries'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Hex'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.If'>: <function if_sql.<locals>._if_sql>, <class 'sqlglot.expressions.ILike'>: <function no_ilike_sql>, <class 'sqlglot.expressions.IntDiv'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.JSONFormat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Max'>: <function max_or_greatest>, <class 'sqlglot.expressions.MD5'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.MD5Digest'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Min'>: <function min_or_least>, <class 'sqlglot.expressions.PartitionedByProperty'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.RegexpExtract'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.RegexpReplace'>: <function regexp_replace_sql>, <class 'sqlglot.expressions.RegexpLike'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Rollback'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.Select'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.SHA'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.SHA2'>: <function sha256_sql>, <class 'sqlglot.expressions.StrToDate'>: <function _str_to_datetime_sql>, <class 'sqlglot.expressions.StrToTime'>: <function _str_to_datetime_sql>, <class 'sqlglot.expressions.TimeAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimeFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampFromParts'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimestampAdd'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimestampDiff'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampSub'>: <function date_add_interval_sql.<locals>.func>, <class 'sqlglot.expressions.TimeStrToTime'>: <function timestrtotime_sql>, <class 'sqlglot.expressions.Transaction'>: <function BigQuery.Generator.<lambda>>, <class 'sqlglot.expressions.TsOrDsAdd'>: <function _ts_or_ds_add_sql>, <class 'sqlglot.expressions.TsOrDsDiff'>: <function _ts_or_ds_diff_sql>, <class 'sqlglot.expressions.TsOrDsToTime'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToTimestamp'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Unhex'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixDate'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTime'>: <function _unix_to_time_sql>, <class 'sqlglot.expressions.Values'>: <function _derived_table_values_to_unnest>, <class 'sqlglot.expressions.VariancePop'>: <function rename_func.<locals>.<lambda>>}
SUPPORTED_JSON_PATH_PARTS = {<class 'sqlglot.expressions.JSONPathRoot'>, <class 'sqlglot.expressions.JSONPathKey'>, <class 'sqlglot.expressions.JSONPathSubscript'>}
TYPE_MAPPING = {<Type.NCHAR: 'NCHAR'>: 'STRING', <Type.NVARCHAR: 'NVARCHAR'>: 'STRING', <Type.MEDIUMTEXT: 'MEDIUMTEXT'>: 'TEXT', <Type.LONGTEXT: 'LONGTEXT'>: 'TEXT', <Type.TINYTEXT: 'TINYTEXT'>: 'TEXT', <Type.MEDIUMBLOB: 'MEDIUMBLOB'>: 'BLOB', <Type.LONGBLOB: 'LONGBLOB'>: 'BLOB', <Type.TINYBLOB: 'TINYBLOB'>: 'BLOB', <Type.INET: 'INET'>: 'INET', <Type.ROWVERSION: 'ROWVERSION'>: 'BYTES', <Type.BIGDECIMAL: 'BIGDECIMAL'>: 'BIGNUMERIC', <Type.BIGINT: 'BIGINT'>: 'INT64', <Type.BINARY: 'BINARY'>: 'BYTES', <Type.BOOLEAN: 'BOOLEAN'>: 'BOOL', <Type.CHAR: 'CHAR'>: 'STRING', <Type.DECIMAL: 'DECIMAL'>: 'NUMERIC', <Type.DOUBLE: 'DOUBLE'>: 'FLOAT64', <Type.FLOAT: 'FLOAT'>: 'FLOAT64', <Type.INT: 'INT'>: 'INT64', <Type.SMALLINT: 'SMALLINT'>: 'INT64', <Type.TEXT: 'TEXT'>: 'STRING', <Type.TIMESTAMP: 'TIMESTAMP'>: 'DATETIME', <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: 'TIMESTAMP', <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: 'TIMESTAMP', <Type.TINYINT: 'TINYINT'>: 'INT64', <Type.UUID: 'UUID'>: 'STRING', <Type.VARBINARY: 'VARBINARY'>: 'BYTES', <Type.VARCHAR: 'VARCHAR'>: 'STRING', <Type.VARIANT: 'VARIANT'>: 'ANY TYPE'}
PROPERTIES_LOCATION = {<class 'sqlglot.expressions.AllowedValuesProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.AlgorithmProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.AutoIncrementProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.AutoRefreshProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.BackupProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.BlockCompressionProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CharacterSetProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ChecksumProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CollateProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Cluster'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ClusteredByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DistributedByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DuplicateKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DataBlocksizeProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.DataDeletionProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DefinerProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.DictRange'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DictProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DynamicProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.DistKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DistStyleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.EmptyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.EngineProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExternalProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.FallbackProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.FileFormatProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.FreespaceProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.GlobalProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.HeapProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.InheritsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.IcebergProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.InputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.IsolatedLoadingProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.JournalProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.LanguageProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LikeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LocationProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LockProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LockingProperty'>: <Location.POST_ALIAS: 'POST_ALIAS'>, <class 'sqlglot.expressions.LogProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.MaterializedProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.MergeBlockRatioProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.OnProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OnCommitProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.Order'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OutputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PartitionedByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PartitionedOfProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PrimaryKey'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Property'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ReturnsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatDelimitedProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatSerdeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SampleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SchemaCommentProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SecureProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.SecurityProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SerdeProperties'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Set'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SettingsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SetProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.SetConfigProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SharingProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.SequenceProperties'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.SortKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SqlReadWriteProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.StabilityProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.StreamingTableProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.StrictProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TemporaryProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.ToTableProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TransientProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.TransformModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.MergeTreeTTL'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.UnloggedProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.ViewAttributeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.VolatileProperty'>: <Location.UNSUPPORTED: 'UNSUPPORTED'>, <class 'sqlglot.expressions.WithDataProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.WithSchemaBindingProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.WithSystemVersioningProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>}
AFTER_HAVING_MODIFIER_TRANSFORMS = {'qualify': <function Generator.<lambda>>, 'windows': <function Generator.<lambda>>}
RESERVED_KEYWORDS = {'groups', 'false', 'between', 'respect', 'with', 'collate', 'interval', 'null', 'intersect', 'escape', 'hash', 'and', 'desc', 'contains', 'proto', 'treat', 'struct', 'of', 'group', 'new', 'nulls', 'lookup', 'qualify', 'as', 'range', 'to', 'except', 'create', 'union', 'extract', 'like', 'some', 'merge', 'rollup', 'case', 'fetch', 'left', 'or', 'following', 'over', 'having', 'rows', 'when', 'assert_rows_modified', 'distinct', 'window', 'cast', 'within', 'true', 'not', 'at', 'default', 'order', 'unbounded', 'if', 'using', 'any', 'join', 'unnest', 'into', 'natural', 'is', 'outer', 'on', 'from', 'grouping', 'asc', 'exclude', 'where', 'limit', 'full', 'for', 'cube', 'all', 'preceding', 'array', 'set', 'current', 'end', 'recursive', 'inner', 'partition', 'in', 'then', 'define', 'lateral', 'no', 'else', 'exists', 'tablesample', 'right', 'select', 'ignore', 'enum', 'by', 'cross'}
def mod_sql(self, expression: sqlglot.expressions.Mod) -> str: View Source

    892        def mod_sql(self, expression: exp.Mod) -> str:
    893            this = expression.this
    894            expr = expression.expression
    895            return self.func(
    896                "MOD",
    897                this.unnest() if isinstance(this, exp.Paren) else this,
    898                expr.unnest() if isinstance(expr, exp.Paren) else expr,
    899            )

def column_parts(self, expression: sqlglot.expressions.Column) -> str: View Source

    901        def column_parts(self, expression: exp.Column) -> str:
    902            if expression.meta.get("quoted_column"):
    903                # If a column reference is of the form `dataset.table`.name, we need
    904                # to preserve the quoted table path, otherwise the reference breaks
    905                table_parts = ".".join(p.name for p in expression.parts[:-1])
    906                table_path = self.sql(exp.Identifier(this=table_parts, quoted=True))
    907                return f"{table_path}.{self.sql(expression, 'this')}"
    908
    909            return super().column_parts(expression)

def table_parts(self, expression: sqlglot.expressions.Table) -> str: View Source

    911        def table_parts(self, expression: exp.Table) -> str:
    912            # Depending on the context, `x.y` may not resolve to the same data source as `x`.`y`, so
    913            # we need to make sure the correct quoting is used in each case.
    914            #
    915            # For example, if there is a CTE x that clashes with a schema name, then the former will
    916            # return the table y in that schema, whereas the latter will return the CTE's y column:
    917            #
    918            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x.y`   -> cross join
    919            # - WITH x AS (SELECT [1, 2] AS y) SELECT * FROM x, `x`.`y` -> implicit unnest
    920            if expression.meta.get("quoted_table"):
    921                table_parts = ".".join(p.name for p in expression.parts)
    922                return self.sql(exp.Identifier(this=table_parts, quoted=True))
    923
    924            return super().table_parts(expression)

def timetostr_sql(self, expression: sqlglot.expressions.TimeToStr) -> str: View Source

    926        def timetostr_sql(self, expression: exp.TimeToStr) -> str:
    927            if isinstance(expression.this, exp.TsOrDsToTimestamp):
    928                func_name = "FORMAT_DATETIME"
    929            else:
    930                func_name = "FORMAT_DATE"
    931            this = (
    932                expression.this
    933                if isinstance(expression.this, (exp.TsOrDsToTimestamp, exp.TsOrDsToDate))
    934                else expression
    935            )
    936            return self.func(func_name, self.format_time(expression), this.this)

def eq_sql(self, expression: sqlglot.expressions.EQ) -> str: View Source

    938        def eq_sql(self, expression: exp.EQ) -> str:
    939            # Operands of = cannot be NULL in BigQuery
    940            if isinstance(expression.left, exp.Null) or isinstance(expression.right, exp.Null):
    941                if not isinstance(expression.parent, exp.Update):
    942                    return "NULL"
    943
    944            return self.binary(expression, "=")

def attimezone_sql(self, expression: sqlglot.expressions.AtTimeZone) -> str: View Source

    946        def attimezone_sql(self, expression: exp.AtTimeZone) -> str:
    947            parent = expression.parent
    948
    949            # BigQuery allows CAST(.. AS {STRING|TIMESTAMP} [FORMAT <fmt> [AT TIME ZONE <tz>]]).
    950            # Only the TIMESTAMP one should use the below conversion, when AT TIME ZONE is included.
    951            if not isinstance(parent, exp.Cast) or not parent.to.is_type("text"):
    952                return self.func(
    953                    "TIMESTAMP", self.func("DATETIME", expression.this, expression.args.get("zone"))
    954                )
    955
    956            return super().attimezone_sql(expression)

def trycast_sql(self, expression: sqlglot.expressions.TryCast) -> str: View Source

    958        def trycast_sql(self, expression: exp.TryCast) -> str:
    959            return self.cast_sql(expression, safe_prefix="SAFE_")

def bracket_sql(self, expression: sqlglot.expressions.Bracket) -> str: View Source

    961        def bracket_sql(self, expression: exp.Bracket) -> str:
    962            this = expression.this
    963            expressions = expression.expressions
    964
    965            if len(expressions) == 1 and this and this.is_type(exp.DataType.Type.STRUCT):
    966                arg = expressions[0]
    967                if arg.type is None:
    968                    from sqlglot.optimizer.annotate_types import annotate_types
    969
    970                    arg = annotate_types(arg)
    971
    972                if arg.type and arg.type.this in exp.DataType.TEXT_TYPES:
    973                    # BQ doesn't support bracket syntax with string values for structs
    974                    return f"{self.sql(this)}.{arg.name}"
    975
    976            expressions_sql = self.expressions(expression, flat=True)
    977            offset = expression.args.get("offset")
    978
    979            if offset == 0:
    980                expressions_sql = f"OFFSET({expressions_sql})"
    981            elif offset == 1:
    982                expressions_sql = f"ORDINAL({expressions_sql})"
    983            elif offset is not None:
    984                self.unsupported(f"Unsupported array offset: {offset}")
    985
    986            if expression.args.get("safe"):
    987                expressions_sql = f"SAFE_{expressions_sql}"
    988
    989            return f"{self.sql(this)}[{expressions_sql}]"

def in_unnest_op(self, expression: sqlglot.expressions.Unnest) -> str: View Source

    991        def in_unnest_op(self, expression: exp.Unnest) -> str:
    992            return self.sql(expression)

def version_sql(self, expression: sqlglot.expressions.Version) -> str: View Source

    994        def version_sql(self, expression: exp.Version) -> str:
    995            if expression.name == "TIMESTAMP":
    996                expression.set("this", "SYSTEM_TIME")
    997            return super().version_sql(expression)

TRY_SUPPORTED = False
SUPPORTS_UESCAPE = False

##### Inherited Members

sqlglot.generator.Generator
  Generator
  LOCKING_READS_SUPPORTED
  WRAP_DERIVED_VALUES
  CREATE_FUNCTION_RETURN_AS
  MATCHED_BY_SOURCE
  SINGLE_STRING_INTERVAL
  GROUPINGS_SEP
  INDEX_ON
  QUERY_HINT_SEP
  IS_BOOL_ALLOWED
  DUPLICATE_KEY_UPDATE_WITH_SET
  LIMIT_IS_TOP
  RETURNING_END
  EXTRACT_ALLOWS_QUOTES
  TZ_TO_WITH_TIME_ZONE
  SELECT_KINDS
  VALUES_AS_TABLE
  ALTER_TABLE_INCLUDE_COLUMN_KEYWORD
  AGGREGATE_FILTER_SUPPORTED
  SEMI_ANTI_JOIN_WITH_SIDE
  COMPUTED_COLUMN_WITH_TYPE
  SUPPORTS_TABLE_COPY
  TABLESAMPLE_REQUIRES_PARENS
  TABLESAMPLE_SIZE_IS_ROWS
  TABLESAMPLE_KEYWORDS
  TABLESAMPLE_WITH_METHOD
  TABLESAMPLE_SEED_KEYWORD
  DATA_TYPE_SPECIFIERS_ALLOWED
  ENSURE_BOOLS
  CTE_RECURSIVE_KEYWORD_REQUIRED
  SUPPORTS_SINGLE_ARG_CONCAT
  LAST_DAY_SUPPORTS_DATE_PART
  INSERT_OVERWRITE
  SUPPORTS_SELECT_INTO
  SUPPORTS_UNLOGGED_TABLES
  SUPPORTS_CREATE_TABLE_LIKE
  LIKE_PROPERTY_INSIDE_SCHEMA
  MULTI_ARG_DISTINCT
  JSON_TYPE_REQUIRED_FOR_EXTRACTION
  JSON_PATH_BRACKETED_KEY_SUPPORTED
  SET_OP_MODIFIERS
  COPY_PARAMS_ARE_WRAPPED
  COPY_PARAMS_EQ_REQUIRED
  COPY_HAS_INTO_KEYWORD
  STAR_EXCEPT
  QUOTE_JSON_PATH
  PAD_FILL_PATTERN_IS_REQUIRED
  ARRAY_CONCAT_IS_VAR_LEN
  SUPPORTS_CONVERT_TIMEZONE
  PARSE_JSON_NAME
  TIME_PART_SINGULARS
  TOKEN_MAPPING
  STRUCT_DELIMITER
  PARAMETER_TOKEN
  WITH_SEPARATED_COMMENTS
  EXCLUDE_COMMENTS
  UNWRAPPED_INTERVAL_VALUES
  PARAMETERIZABLE_TEXT_TYPES
  EXPRESSIONS_WITHOUT_NESTED_CTES
  SENTINEL_LINE_BREAK
  pretty
  identify
  normalize
  pad
  unsupported_level
  max_unsupported
  leading_comma
  max_text_width
  comments
  dialect
  normalize_functions
  unsupported_messages
  generate
  preprocess
  unsupported
  sep
  seg
  pad_comment
  maybe_comment
  wrap
  no_identify
  normalize_func
  indent
  sql
  uncache_sql
  cache_sql
  characterset_sql
  column_sql
  columnposition_sql
  columndef_sql
  columnconstraint_sql
  computedcolumnconstraint_sql
  autoincrementcolumnconstraint_sql
  compresscolumnconstraint_sql
  generatedasidentitycolumnconstraint_sql
  generatedasrowcolumnconstraint_sql
  periodforsystemtimeconstraint_sql
  notnullcolumnconstraint_sql
  transformcolumnconstraint_sql
  primarykeycolumnconstraint_sql
  uniquecolumnconstraint_sql
  createable_sql
  create_sql
  sequenceproperties_sql
  clone_sql
  describe_sql
  heredoc_sql
  prepend_ctes
  with_sql
  cte_sql
  tablealias_sql
  bitstring_sql
  hexstring_sql
  bytestring_sql
  unicodestring_sql
  rawstring_sql
  datatypeparam_sql
  datatype_sql
  directory_sql
  delete_sql
  drop_sql
  set_operation
  set_operations
  fetch_sql
  filter_sql
  hint_sql
  indexparameters_sql
  index_sql
  identifier_sql
  hex_sql
  lowerhex_sql
  inputoutputformat_sql
  national_sql
  partition_sql
  properties_sql
  root_properties
  properties
  with_properties
  locate_properties
  property_name
  property_sql
  likeproperty_sql
  fallbackproperty_sql
  journalproperty_sql
  freespaceproperty_sql
  checksumproperty_sql
  mergeblockratioproperty_sql
  datablocksizeproperty_sql
  blockcompressionproperty_sql
  isolatedloadingproperty_sql
  partitionboundspec_sql
  partitionedofproperty_sql
  lockingproperty_sql
  withdataproperty_sql
  withsystemversioningproperty_sql
  insert_sql
  introducer_sql
  kill_sql
  pseudotype_sql
  objectidentifier_sql
  onconflict_sql
  returning_sql
  rowformatdelimitedproperty_sql
  withtablehint_sql
  indextablehint_sql
  historicaldata_sql
  table_sql
  tablesample_sql
  pivot_sql
  tuple_sql
  update_sql
  values_sql
  var_sql
  into_sql
  from_sql
  groupingsets_sql
  rollup_sql
  cube_sql
  group_sql
  having_sql
  connect_sql
  prior_sql
  join_sql
  lambda_sql
  lateral_op
  lateral_sql
  limit_sql
  offset_sql
  setitem_sql
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  pragma_sql
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  literal_sql
  escape_str
  loaddata_sql
  null_sql
  boolean_sql
  order_sql
  withfill_sql
  cluster_sql
  distribute_sql
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  matchrecognizemeasure_sql
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  query_modifiers
  options_modifier
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  select_sql
  schema_sql
  schema_columns_sql
  star_sql
  parameter_sql
  sessionparameter_sql
  placeholder_sql
  subquery_sql
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  where_sql
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  windowspec_sql
  withingroup_sql
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  bracket_offset_expressions
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  case_sql
  constraint_sql
  nextvaluefor_sql
  extract_sql
  trim_sql
  convert_concat_args
  concat_sql
  concatws_sql
  check_sql
  foreignkey_sql
  primarykey_sql
  if_sql
  matchagainst_sql
  jsonkeyvalue_sql
  jsonpath_sql
  json_path_part
  formatjson_sql
  jsonobject_sql
  jsonobjectagg_sql
  jsonarray_sql
  jsonarrayagg_sql
  jsoncolumndef_sql
  jsonschema_sql
  jsontable_sql
  openjsoncolumndef_sql
  openjson_sql
  in_sql
  interval_sql
  return_sql
  reference_sql
  anonymous_sql
  paren_sql
  neg_sql
  not_sql
  alias_sql
  pivotalias_sql
  aliases_sql
  atindex_sql
  fromtimezone_sql
  add_sql
  and_sql
  or_sql
  xor_sql
  connector_sql
  bitwiseand_sql
  bitwiseleftshift_sql
  bitwisenot_sql
  bitwiseor_sql
  bitwiserightshift_sql
  bitwisexor_sql
  cast_sql
  currentdate_sql
  collate_sql
  command_sql
  comment_sql
  mergetreettlaction_sql
  mergetreettl_sql
  transaction_sql
  commit_sql
  rollback_sql
  altercolumn_sql
  alterdiststyle_sql
  altersortkey_sql
  renametable_sql
  renamecolumn_sql
  alterset_sql
  alter_sql
  add_column_sql
  droppartition_sql
  addconstraint_sql
  distinct_sql
  ignorenulls_sql
  respectnulls_sql
  havingmax_sql
  intdiv_sql
  dpipe_sql
  div_sql
  overlaps_sql
  distance_sql
  dot_sql
  propertyeq_sql
  escape_sql
  glob_sql
  gt_sql
  gte_sql
  ilike_sql
  ilikeany_sql
  is_sql
  like_sql
  likeany_sql
  similarto_sql
  lt_sql
  lte_sql
  mul_sql
  neq_sql
  nullsafeeq_sql
  nullsafeneq_sql
  slice_sql
  sub_sql
  try_sql
  log_sql
  use_sql
  binary
  function_fallback_sql
  func
  format_args
  too_wide
  format_time
  expressions
  op_expressions
  naked_property
  tag_sql
  token_sql
  userdefinedfunction_sql
  joinhint_sql
  kwarg_sql
  when_sql
  merge_sql
  tochar_sql
  tonumber_sql
  dictproperty_sql
  dictrange_sql
  dictsubproperty_sql
  duplicatekeyproperty_sql
  distributedbyproperty_sql
  oncluster_sql
  clusteredbyproperty_sql
  anyvalue_sql
  querytransform_sql
  indexconstraintoption_sql
  checkcolumnconstraint_sql
  indexcolumnconstraint_sql
  nvl2_sql
  comprehension_sql
  columnprefix_sql
  opclass_sql
  predict_sql
  forin_sql
  refresh_sql
  toarray_sql
  tsordstotime_sql
  tsordstotimestamp_sql
  tsordstodate_sql
  unixdate_sql
  lastday_sql
  dateadd_sql
  arrayany_sql
  struct_sql
  partitionrange_sql
  truncatetable_sql
  convert_sql
  copyparameter_sql
  credentials_sql
  copy_sql
  semicolon_sql
  datadeletionproperty_sql
  maskingpolicycolumnconstraint_sql
  gapfill_sql
  scope_resolution
  scoperesolution_sql
  parsejson_sql
  rand_sql
  changes_sql
  pad_sql
  summarize_sql
  explodinggenerateseries_sql
  arrayconcat_sql
  converttimezone_sql
  json_sql
  jsonvalue_sql
  conditionalinsert_sql
  multitableinserts_sql
  oncondition_sql
  jsonexists_sql
  arrayagg_sql
  apply_sql
  grant_sql
  grantprivilege_sql
  grantprincipal_sql
  columns_sql
  overlay_sql