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# sqlglot.optimizer.annotate_types

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      1from __future__ import annotations
      2
      3import functools
      4import typing as t
      5
      6from sqlglot import exp
      7from sqlglot.helper import (
      8    ensure_list,
      9    is_date_unit,
     10    is_iso_date,
     11    is_iso_datetime,
     12    seq_get,
     13)
     14from sqlglot.optimizer.scope import Scope, traverse_scope
     15from sqlglot.schema import Schema, ensure_schema
     16from sqlglot.dialects.dialect import Dialect
     17
     18if t.TYPE_CHECKING:
     19    from sqlglot._typing import B, E
     20
     21    BinaryCoercionFunc = t.Callable[[exp.Expression, exp.Expression], exp.DataType.Type]
     22    BinaryCoercions = t.Dict[
     23        t.Tuple[exp.DataType.Type, exp.DataType.Type],
     24        BinaryCoercionFunc,
     25    ]
     26
     27    from sqlglot.dialects.dialect import DialectType, AnnotatorsType
     28
     29
     30def annotate_types(
     31    expression: E,
     32    schema: t.Optional[t.Dict | Schema] = None,
     33    annotators: t.Optional[AnnotatorsType] = None,
     34    coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None,
     35    dialect: t.Optional[DialectType] = None,
     36) -> E:
     37    """
     38    Infers the types of an expression, annotating its AST accordingly.
     39
     40    Example:
     41        >>> import sqlglot
     42        >>> schema = {"y": {"cola": "SMALLINT"}}
     43        >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x"
     44        >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema)
     45        >>> annotated_expr.expressions[0].type.this  # Get the type of "x.cola + 2.5 AS cola"
     46        <Type.DOUBLE: 'DOUBLE'>
     47
     48    Args:
     49        expression: Expression to annotate.
     50        schema: Database schema.
     51        annotators: Maps expression type to corresponding annotation function.
     52        coerces_to: Maps expression type to set of types that it can be coerced into.
     53
     54    Returns:
     55        The expression annotated with types.
     56    """
     57
     58    schema = ensure_schema(schema)
     59
     60    return TypeAnnotator(schema, annotators, coerces_to, dialect=dialect).annotate(expression)
     61
     62
     63def _coerce_date_literal(l: exp.Expression, unit: t.Optional[exp.Expression]) -> exp.DataType.Type:
     64    date_text = l.name
     65    is_iso_date_ = is_iso_date(date_text)
     66
     67    if is_iso_date_ and is_date_unit(unit):
     68        return exp.DataType.Type.DATE
     69
     70    # An ISO date is also an ISO datetime, but not vice versa
     71    if is_iso_date_ or is_iso_datetime(date_text):
     72        return exp.DataType.Type.DATETIME
     73
     74    return exp.DataType.Type.UNKNOWN
     75
     76
     77def _coerce_date(l: exp.Expression, unit: t.Optional[exp.Expression]) -> exp.DataType.Type:
     78    if not is_date_unit(unit):
     79        return exp.DataType.Type.DATETIME
     80    return l.type.this if l.type else exp.DataType.Type.UNKNOWN
     81
     82
     83def swap_args(func: BinaryCoercionFunc) -> BinaryCoercionFunc:
     84    @functools.wraps(func)
     85    def _swapped(l: exp.Expression, r: exp.Expression) -> exp.DataType.Type:
     86        return func(r, l)
     87
     88    return _swapped
     89
     90
     91def swap_all(coercions: BinaryCoercions) -> BinaryCoercions:
     92    return {**coercions, **{(b, a): swap_args(func) for (a, b), func in coercions.items()}}
     93
     94
     95class _TypeAnnotator(type):
     96    def __new__(cls, clsname, bases, attrs):
     97        klass = super().__new__(cls, clsname, bases, attrs)
     98
     99        # Highest-to-lowest type precedence, as specified in Spark's docs (ANSI):
    100        # https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html
    101        text_precedence = (
    102            exp.DataType.Type.TEXT,
    103            exp.DataType.Type.NVARCHAR,
    104            exp.DataType.Type.VARCHAR,
    105            exp.DataType.Type.NCHAR,
    106            exp.DataType.Type.CHAR,
    107        )
    108        numeric_precedence = (
    109            exp.DataType.Type.DOUBLE,
    110            exp.DataType.Type.FLOAT,
    111            exp.DataType.Type.DECIMAL,
    112            exp.DataType.Type.BIGINT,
    113            exp.DataType.Type.INT,
    114            exp.DataType.Type.SMALLINT,
    115            exp.DataType.Type.TINYINT,
    116        )
    117        timelike_precedence = (
    118            exp.DataType.Type.TIMESTAMPLTZ,
    119            exp.DataType.Type.TIMESTAMPTZ,
    120            exp.DataType.Type.TIMESTAMP,
    121            exp.DataType.Type.DATETIME,
    122            exp.DataType.Type.DATE,
    123        )
    124
    125        for type_precedence in (text_precedence, numeric_precedence, timelike_precedence):
    126            coerces_to = set()
    127            for data_type in type_precedence:
    128                klass.COERCES_TO[data_type] = coerces_to.copy()
    129                coerces_to |= {data_type}
    130
    131        # NULL can be coerced to any type, so e.g. NULL + 1 will have type INT
    132        klass.COERCES_TO[exp.DataType.Type.NULL] = {
    133            *text_precedence,
    134            *numeric_precedence,
    135            *timelike_precedence,
    136        }
    137
    138        return klass
    139
    140
    141class TypeAnnotator(metaclass=_TypeAnnotator):
    142    NESTED_TYPES = {
    143        exp.DataType.Type.ARRAY,
    144    }
    145
    146    # Specifies what types a given type can be coerced into (autofilled)
    147    COERCES_TO: t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]] = {}
    148
    149    # Coercion functions for binary operations.
    150    # Map of type pairs to a callable that takes both sides of the binary operation and returns the resulting type.
    151    BINARY_COERCIONS: BinaryCoercions = {
    152        **swap_all(
    153            {
    154                (t, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date_literal(
    155                    l, r.args.get("unit")
    156                )
    157                for t in exp.DataType.TEXT_TYPES
    158            }
    159        ),
    160        **swap_all(
    161            {
    162                # text + numeric will yield the numeric type to match most dialects' semantics
    163                (text, numeric): lambda l, r: t.cast(
    164                    exp.DataType.Type, l.type if l.type in exp.DataType.NUMERIC_TYPES else r.type
    165                )
    166                for text in exp.DataType.TEXT_TYPES
    167                for numeric in exp.DataType.NUMERIC_TYPES
    168            }
    169        ),
    170        **swap_all(
    171            {
    172                (exp.DataType.Type.DATE, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date(
    173                    l, r.args.get("unit")
    174                ),
    175            }
    176        ),
    177    }
    178
    179    def __init__(
    180        self,
    181        schema: Schema,
    182        annotators: t.Optional[AnnotatorsType] = None,
    183        coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None,
    184        binary_coercions: t.Optional[BinaryCoercions] = None,
    185        dialect: t.Optional[DialectType] = None,
    186    ) -> None:
    187        self.schema = schema
    188        self.annotators = annotators or Dialect.get_or_raise(dialect).ANNOTATORS
    189        self.coerces_to = coerces_to or self.COERCES_TO
    190        self.binary_coercions = binary_coercions or self.BINARY_COERCIONS
    191
    192        # Caches the ids of annotated sub-Expressions, to ensure we only visit them once
    193        self._visited: t.Set[int] = set()
    194
    195    def _set_type(
    196        self, expression: exp.Expression, target_type: t.Optional[exp.DataType | exp.DataType.Type]
    197    ) -> None:
    198        expression.type = target_type or exp.DataType.Type.UNKNOWN  # type: ignore
    199        self._visited.add(id(expression))
    200
    201    def annotate(self, expression: E) -> E:
    202        for scope in traverse_scope(expression):
    203            self.annotate_scope(scope)
    204        return self._maybe_annotate(expression)  # This takes care of non-traversable expressions
    205
    206    def annotate_scope(self, scope: Scope) -> None:
    207        selects = {}
    208        for name, source in scope.sources.items():
    209            if not isinstance(source, Scope):
    210                continue
    211
    212            expression = source.expression
    213            if isinstance(expression, exp.UDTF):
    214                values = []
    215
    216                if isinstance(expression, exp.Lateral):
    217                    if isinstance(expression.this, exp.Explode):
    218                        values = [expression.this.this]
    219                elif isinstance(expression, exp.Unnest):
    220                    values = [expression]
    221                else:
    222                    values = expression.expressions[0].expressions
    223
    224                if not values:
    225                    continue
    226
    227                selects[name] = {
    228                    alias: column.type
    229                    for alias, column in zip(expression.alias_column_names, values)
    230                }
    231            elif isinstance(expression, exp.SetOperation) and len(expression.left.selects) == len(
    232                expression.right.selects
    233            ):
    234                if expression.args.get("by_name"):
    235                    r_type_by_select = {s.alias_or_name: s.type for s in expression.right.selects}
    236                    selects[name] = {
    237                        s.alias_or_name: self._maybe_coerce(
    238                            t.cast(exp.DataType, s.type),
    239                            r_type_by_select.get(s.alias_or_name) or exp.DataType.Type.UNKNOWN,
    240                        )
    241                        for s in expression.left.selects
    242                    }
    243                else:
    244                    selects[name] = {
    245                        ls.alias_or_name: self._maybe_coerce(
    246                            t.cast(exp.DataType, ls.type), t.cast(exp.DataType, rs.type)
    247                        )
    248                        for ls, rs in zip(expression.left.selects, expression.right.selects)
    249                    }
    250            else:
    251                selects[name] = {s.alias_or_name: s.type for s in expression.selects}
    252
    253        # First annotate the current scope's column references
    254        for col in scope.columns:
    255            if not col.table:
    256                continue
    257
    258            source = scope.sources.get(col.table)
    259            if isinstance(source, exp.Table):
    260                self._set_type(col, self.schema.get_column_type(source, col))
    261            elif source:
    262                if col.table in selects and col.name in selects[col.table]:
    263                    self._set_type(col, selects[col.table][col.name])
    264                elif isinstance(source.expression, exp.Unnest):
    265                    self._set_type(col, source.expression.type)
    266
    267        # Then (possibly) annotate the remaining expressions in the scope
    268        self._maybe_annotate(scope.expression)
    269
    270    def _maybe_annotate(self, expression: E) -> E:
    271        if id(expression) in self._visited:
    272            return expression  # We've already inferred the expression's type
    273
    274        annotator = self.annotators.get(expression.__class__)
    275
    276        return (
    277            annotator(self, expression)
    278            if annotator
    279            else self._annotate_with_type(expression, exp.DataType.Type.UNKNOWN)
    280        )
    281
    282    def _annotate_args(self, expression: E) -> E:
    283        for value in expression.iter_expressions():
    284            self._maybe_annotate(value)
    285
    286        return expression
    287
    288    def _maybe_coerce(
    289        self, type1: exp.DataType | exp.DataType.Type, type2: exp.DataType | exp.DataType.Type
    290    ) -> exp.DataType:
    291        type1_value = type1.this if isinstance(type1, exp.DataType) else type1
    292        type2_value = type2.this if isinstance(type2, exp.DataType) else type2
    293
    294        # We propagate the UNKNOWN type upwards if found
    295        if exp.DataType.Type.UNKNOWN in (type1_value, type2_value):
    296            return exp.DataType.build("unknown")
    297
    298        return type2_value if type2_value in self.coerces_to.get(type1_value, {}) else type1_value
    299
    300    def _annotate_binary(self, expression: B) -> B:
    301        self._annotate_args(expression)
    302
    303        left, right = expression.left, expression.right
    304        left_type, right_type = left.type.this, right.type.this  # type: ignore
    305
    306        if isinstance(expression, (exp.Connector, exp.Predicate)):
    307            self._set_type(expression, exp.DataType.Type.BOOLEAN)
    308        elif (left_type, right_type) in self.binary_coercions:
    309            self._set_type(expression, self.binary_coercions[(left_type, right_type)](left, right))
    310        else:
    311            self._set_type(expression, self._maybe_coerce(left_type, right_type))
    312
    313        return expression
    314
    315    def _annotate_unary(self, expression: E) -> E:
    316        self._annotate_args(expression)
    317
    318        if isinstance(expression, exp.Not):
    319            self._set_type(expression, exp.DataType.Type.BOOLEAN)
    320        else:
    321            self._set_type(expression, expression.this.type)
    322
    323        return expression
    324
    325    def _annotate_literal(self, expression: exp.Literal) -> exp.Literal:
    326        if expression.is_string:
    327            self._set_type(expression, exp.DataType.Type.VARCHAR)
    328        elif expression.is_int:
    329            self._set_type(expression, exp.DataType.Type.INT)
    330        else:
    331            self._set_type(expression, exp.DataType.Type.DOUBLE)
    332
    333        return expression
    334
    335    def _annotate_with_type(
    336        self, expression: E, target_type: exp.DataType | exp.DataType.Type
    337    ) -> E:
    338        self._set_type(expression, target_type)
    339        return self._annotate_args(expression)
    340
    341    @t.no_type_check
    342    def _annotate_by_args(
    343        self,
    344        expression: E,
    345        *args: str,
    346        promote: bool = False,
    347        array: bool = False,
    348    ) -> E:
    349        self._annotate_args(expression)
    350
    351        expressions: t.List[exp.Expression] = []
    352        for arg in args:
    353            arg_expr = expression.args.get(arg)
    354            expressions.extend(expr for expr in ensure_list(arg_expr) if expr)
    355
    356        last_datatype = None
    357        for expr in expressions:
    358            expr_type = expr.type
    359
    360            # Stop at the first nested data type found - we don't want to _maybe_coerce nested types
    361            if expr_type.args.get("nested"):
    362                last_datatype = expr_type
    363                break
    364
    365            if not expr_type.is_type(exp.DataType.Type.UNKNOWN):
    366                last_datatype = self._maybe_coerce(last_datatype or expr_type, expr_type)
    367
    368        self._set_type(expression, last_datatype or exp.DataType.Type.UNKNOWN)
    369
    370        if promote:
    371            if expression.type.this in exp.DataType.INTEGER_TYPES:
    372                self._set_type(expression, exp.DataType.Type.BIGINT)
    373            elif expression.type.this in exp.DataType.FLOAT_TYPES:
    374                self._set_type(expression, exp.DataType.Type.DOUBLE)
    375
    376        if array:
    377            self._set_type(
    378                expression,
    379                exp.DataType(
    380                    this=exp.DataType.Type.ARRAY, expressions=[expression.type], nested=True
    381                ),
    382            )
    383
    384        return expression
    385
    386    def _annotate_timeunit(
    387        self, expression: exp.TimeUnit | exp.DateTrunc
    388    ) -> exp.TimeUnit | exp.DateTrunc:
    389        self._annotate_args(expression)
    390
    391        if expression.this.type.this in exp.DataType.TEXT_TYPES:
    392            datatype = _coerce_date_literal(expression.this, expression.unit)
    393        elif expression.this.type.this in exp.DataType.TEMPORAL_TYPES:
    394            datatype = _coerce_date(expression.this, expression.unit)
    395        else:
    396            datatype = exp.DataType.Type.UNKNOWN
    397
    398        self._set_type(expression, datatype)
    399        return expression
    400
    401    def _annotate_bracket(self, expression: exp.Bracket) -> exp.Bracket:
    402        self._annotate_args(expression)
    403
    404        bracket_arg = expression.expressions[0]
    405        this = expression.this
    406
    407        if isinstance(bracket_arg, exp.Slice):
    408            self._set_type(expression, this.type)
    409        elif this.type.is_type(exp.DataType.Type.ARRAY):
    410            self._set_type(expression, seq_get(this.type.expressions, 0))
    411        elif isinstance(this, (exp.Map, exp.VarMap)) and bracket_arg in this.keys:
    412            index = this.keys.index(bracket_arg)
    413            value = seq_get(this.values, index)
    414            self._set_type(expression, value.type if value else None)
    415        else:
    416            self._set_type(expression, exp.DataType.Type.UNKNOWN)
    417
    418        return expression
    419
    420    def _annotate_div(self, expression: exp.Div) -> exp.Div:
    421        self._annotate_args(expression)
    422
    423        left_type, right_type = expression.left.type.this, expression.right.type.this  # type: ignore
    424
    425        if (
    426            expression.args.get("typed")
    427            and left_type in exp.DataType.INTEGER_TYPES
    428            and right_type in exp.DataType.INTEGER_TYPES
    429        ):
    430            self._set_type(expression, exp.DataType.Type.BIGINT)
    431        else:
    432            self._set_type(expression, self._maybe_coerce(left_type, right_type))
    433            if expression.type and expression.type.this not in exp.DataType.REAL_TYPES:
    434                self._set_type(
    435                    expression, self._maybe_coerce(expression.type, exp.DataType.Type.DOUBLE)
    436                )
    437
    438        return expression
    439
    440    def _annotate_dot(self, expression: exp.Dot) -> exp.Dot:
    441        self._annotate_args(expression)
    442        self._set_type(expression, None)
    443        this_type = expression.this.type
    444
    445        if this_type and this_type.is_type(exp.DataType.Type.STRUCT):
    446            for e in this_type.expressions:
    447                if e.name == expression.expression.name:
    448                    self._set_type(expression, e.kind)
    449                    break
    450
    451        return expression
    452
    453    def _annotate_explode(self, expression: exp.Explode) -> exp.Explode:
    454        self._annotate_args(expression)
    455        self._set_type(expression, seq_get(expression.this.type.expressions, 0))
    456        return expression
    457
    458    def _annotate_unnest(self, expression: exp.Unnest) -> exp.Unnest:
    459        self._annotate_args(expression)
    460        child = seq_get(expression.expressions, 0)
    461
    462        if child and child.is_type(exp.DataType.Type.ARRAY):
    463            expr_type = seq_get(child.type.expressions, 0)
    464        else:
    465            expr_type = None
    466
    467        self._set_type(expression, expr_type)
    468        return expression
    469
    470    def _annotate_struct_value(
    471        self, expression: exp.Expression
    472    ) -> t.Optional[exp.DataType] | exp.ColumnDef:
    473        alias = expression.args.get("alias")
    474        if alias:
    475            return exp.ColumnDef(this=alias.copy(), kind=expression.type)
    476
    477        # Case: key = value or key := value
    478        if expression.expression:
    479            return exp.ColumnDef(this=expression.this.copy(), kind=expression.expression.type)
    480
    481        return expression.type
    482
    483    def _annotate_struct(self, expression: exp.Struct) -> exp.Struct:
    484        self._annotate_args(expression)
    485        self._set_type(
    486            expression,
    487            exp.DataType(
    488                this=exp.DataType.Type.STRUCT,
    489                expressions=[self._annotate_struct_value(expr) for expr in expression.expressions],
    490                nested=True,
    491            ),
    492        )
    493        return expression
    494
    495    @t.overload
    496    def _annotate_map(self, expression: exp.Map) -> exp.Map: ...
    497
    498    @t.overload
    499    def _annotate_map(self, expression: exp.VarMap) -> exp.VarMap: ...
    500
    501    def _annotate_map(self, expression):
    502        self._annotate_args(expression)
    503
    504        keys = expression.args.get("keys")
    505        values = expression.args.get("values")
    506
    507        map_type = exp.DataType(this=exp.DataType.Type.MAP)
    508        if isinstance(keys, exp.Array) and isinstance(values, exp.Array):
    509            key_type = seq_get(keys.type.expressions, 0) or exp.DataType.Type.UNKNOWN
    510            value_type = seq_get(values.type.expressions, 0) or exp.DataType.Type.UNKNOWN
    511
    512            if key_type != exp.DataType.Type.UNKNOWN and value_type != exp.DataType.Type.UNKNOWN:
    513                map_type.set("expressions", [key_type, value_type])
    514                map_type.set("nested", True)
    515
    516        self._set_type(expression, map_type)
    517        return expression
    518
    519    def _annotate_to_map(self, expression: exp.ToMap) -> exp.ToMap:
    520        self._annotate_args(expression)
    521
    522        map_type = exp.DataType(this=exp.DataType.Type.MAP)
    523        arg = expression.this
    524        if arg.is_type(exp.DataType.Type.STRUCT):
    525            for coldef in arg.type.expressions:
    526                kind = coldef.kind
    527                if kind != exp.DataType.Type.UNKNOWN:
    528                    map_type.set("expressions", [exp.DataType.build("varchar"), kind])
    529                    map_type.set("nested", True)
    530                    break
    531
    532        self._set_type(expression, map_type)
    533        return expression
    534
    535    def _annotate_extract(self, expression: exp.Extract) -> exp.Extract:
    536        self._annotate_args(expression)
    537        part = expression.name
    538        if part == "TIME":
    539            self._set_type(expression, exp.DataType.Type.TIME)
    540        elif part == "DATE":
    541            self._set_type(expression, exp.DataType.Type.DATE)
    542        else:
    543            self._set_type(expression, exp.DataType.Type.INT)
    544        return expression

def annotate_types( expression: ~E, schema: Union[Dict, sqlglot.schema.Schema, NoneType] = None, annotators: Optional[Dict[Type[~E], Callable[[TypeAnnotator, ~E], ~E]]] = None, coerces_to: Optional[Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]]] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None) -> ~E: View Source

    31def annotate_types(
    32    expression: E,
    33    schema: t.Optional[t.Dict | Schema] = None,
    34    annotators: t.Optional[AnnotatorsType] = None,
    35    coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None,
    36    dialect: t.Optional[DialectType] = None,
    37) -> E:
    38    """
    39    Infers the types of an expression, annotating its AST accordingly.
    40
    41    Example:
    42        >>> import sqlglot
    43        >>> schema = {"y": {"cola": "SMALLINT"}}
    44        >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x"
    45        >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema)
    46        >>> annotated_expr.expressions[0].type.this  # Get the type of "x.cola + 2.5 AS cola"
    47        <Type.DOUBLE: 'DOUBLE'>
    48
    49    Args:
    50        expression: Expression to annotate.
    51        schema: Database schema.
    52        annotators: Maps expression type to corresponding annotation function.
    53        coerces_to: Maps expression type to set of types that it can be coerced into.
    54
    55    Returns:
    56        The expression annotated with types.
    57    """
    58
    59    schema = ensure_schema(schema)
    60
    61    return TypeAnnotator(schema, annotators, coerces_to, dialect=dialect).annotate(expression)

Infers the types of an expression, annotating its AST accordingly.

###### Example:

>     >>> import sqlglot
>     >>> schema = {"y": {"cola": "SMALLINT"}}
>     >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x"
>     >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema)
>     >>> annotated_expr.expressions[0].type.this  # Get the type of "x.cola + 2.5 AS cola"
>     <Type.DOUBLE: 'DOUBLE'>

###### Arguments:

- expression: Expression to annotate.
- schema: Database schema.
- annotators: Maps expression type to corresponding annotation function.
- coerces_to: Maps expression type to set of types that it can be coerced into.

###### Returns:

> The expression annotated with types.

def swap_args( func: Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]) -> Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]: View Source

    84def swap_args(func: BinaryCoercionFunc) -> BinaryCoercionFunc:
    85    @functools.wraps(func)
    86    def _swapped(l: exp.Expression, r: exp.Expression) -> exp.DataType.Type:
    87        return func(r, l)
    88
    89    return _swapped

def swap_all( coercions: Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]) -> Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]: View Source

    92def swap_all(coercions: BinaryCoercions) -> BinaryCoercions:
    93    return {**coercions, **{(b, a): swap_args(func) for (a, b), func in coercions.items()}}

class TypeAnnotator: View Source

    142class TypeAnnotator(metaclass=_TypeAnnotator):
    143    NESTED_TYPES = {
    144        exp.DataType.Type.ARRAY,
    145    }
    146
    147    # Specifies what types a given type can be coerced into (autofilled)
    148    COERCES_TO: t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]] = {}
    149
    150    # Coercion functions for binary operations.
    151    # Map of type pairs to a callable that takes both sides of the binary operation and returns the resulting type.
    152    BINARY_COERCIONS: BinaryCoercions = {
    153        **swap_all(
    154            {
    155                (t, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date_literal(
    156                    l, r.args.get("unit")
    157                )
    158                for t in exp.DataType.TEXT_TYPES
    159            }
    160        ),
    161        **swap_all(
    162            {
    163                # text + numeric will yield the numeric type to match most dialects' semantics
    164                (text, numeric): lambda l, r: t.cast(
    165                    exp.DataType.Type, l.type if l.type in exp.DataType.NUMERIC_TYPES else r.type
    166                )
    167                for text in exp.DataType.TEXT_TYPES
    168                for numeric in exp.DataType.NUMERIC_TYPES
    169            }
    170        ),
    171        **swap_all(
    172            {
    173                (exp.DataType.Type.DATE, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date(
    174                    l, r.args.get("unit")
    175                ),
    176            }
    177        ),
    178    }
    179
    180    def __init__(
    181        self,
    182        schema: Schema,
    183        annotators: t.Optional[AnnotatorsType] = None,
    184        coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None,
    185        binary_coercions: t.Optional[BinaryCoercions] = None,
    186        dialect: t.Optional[DialectType] = None,
    187    ) -> None:
    188        self.schema = schema
    189        self.annotators = annotators or Dialect.get_or_raise(dialect).ANNOTATORS
    190        self.coerces_to = coerces_to or self.COERCES_TO
    191        self.binary_coercions = binary_coercions or self.BINARY_COERCIONS
    192
    193        # Caches the ids of annotated sub-Expressions, to ensure we only visit them once
    194        self._visited: t.Set[int] = set()
    195
    196    def _set_type(
    197        self, expression: exp.Expression, target_type: t.Optional[exp.DataType | exp.DataType.Type]
    198    ) -> None:
    199        expression.type = target_type or exp.DataType.Type.UNKNOWN  # type: ignore
    200        self._visited.add(id(expression))
    201
    202    def annotate(self, expression: E) -> E:
    203        for scope in traverse_scope(expression):
    204            self.annotate_scope(scope)
    205        return self._maybe_annotate(expression)  # This takes care of non-traversable expressions
    206
    207    def annotate_scope(self, scope: Scope) -> None:
    208        selects = {}
    209        for name, source in scope.sources.items():
    210            if not isinstance(source, Scope):
    211                continue
    212
    213            expression = source.expression
    214            if isinstance(expression, exp.UDTF):
    215                values = []
    216
    217                if isinstance(expression, exp.Lateral):
    218                    if isinstance(expression.this, exp.Explode):
    219                        values = [expression.this.this]
    220                elif isinstance(expression, exp.Unnest):
    221                    values = [expression]
    222                else:
    223                    values = expression.expressions[0].expressions
    224
    225                if not values:
    226                    continue
    227
    228                selects[name] = {
    229                    alias: column.type
    230                    for alias, column in zip(expression.alias_column_names, values)
    231                }
    232            elif isinstance(expression, exp.SetOperation) and len(expression.left.selects) == len(
    233                expression.right.selects
    234            ):
    235                if expression.args.get("by_name"):
    236                    r_type_by_select = {s.alias_or_name: s.type for s in expression.right.selects}
    237                    selects[name] = {
    238                        s.alias_or_name: self._maybe_coerce(
    239                            t.cast(exp.DataType, s.type),
    240                            r_type_by_select.get(s.alias_or_name) or exp.DataType.Type.UNKNOWN,
    241                        )
    242                        for s in expression.left.selects
    243                    }
    244                else:
    245                    selects[name] = {
    246                        ls.alias_or_name: self._maybe_coerce(
    247                            t.cast(exp.DataType, ls.type), t.cast(exp.DataType, rs.type)
    248                        )
    249                        for ls, rs in zip(expression.left.selects, expression.right.selects)
    250                    }
    251            else:
    252                selects[name] = {s.alias_or_name: s.type for s in expression.selects}
    253
    254        # First annotate the current scope's column references
    255        for col in scope.columns:
    256            if not col.table:
    257                continue
    258
    259            source = scope.sources.get(col.table)
    260            if isinstance(source, exp.Table):
    261                self._set_type(col, self.schema.get_column_type(source, col))
    262            elif source:
    263                if col.table in selects and col.name in selects[col.table]:
    264                    self._set_type(col, selects[col.table][col.name])
    265                elif isinstance(source.expression, exp.Unnest):
    266                    self._set_type(col, source.expression.type)
    267
    268        # Then (possibly) annotate the remaining expressions in the scope
    269        self._maybe_annotate(scope.expression)
    270
    271    def _maybe_annotate(self, expression: E) -> E:
    272        if id(expression) in self._visited:
    273            return expression  # We've already inferred the expression's type
    274
    275        annotator = self.annotators.get(expression.__class__)
    276
    277        return (
    278            annotator(self, expression)
    279            if annotator
    280            else self._annotate_with_type(expression, exp.DataType.Type.UNKNOWN)
    281        )
    282
    283    def _annotate_args(self, expression: E) -> E:
    284        for value in expression.iter_expressions():
    285            self._maybe_annotate(value)
    286
    287        return expression
    288
    289    def _maybe_coerce(
    290        self, type1: exp.DataType | exp.DataType.Type, type2: exp.DataType | exp.DataType.Type
    291    ) -> exp.DataType:
    292        type1_value = type1.this if isinstance(type1, exp.DataType) else type1
    293        type2_value = type2.this if isinstance(type2, exp.DataType) else type2
    294
    295        # We propagate the UNKNOWN type upwards if found
    296        if exp.DataType.Type.UNKNOWN in (type1_value, type2_value):
    297            return exp.DataType.build("unknown")
    298
    299        return type2_value if type2_value in self.coerces_to.get(type1_value, {}) else type1_value
    300
    301    def _annotate_binary(self, expression: B) -> B:
    302        self._annotate_args(expression)
    303
    304        left, right = expression.left, expression.right
    305        left_type, right_type = left.type.this, right.type.this  # type: ignore
    306
    307        if isinstance(expression, (exp.Connector, exp.Predicate)):
    308            self._set_type(expression, exp.DataType.Type.BOOLEAN)
    309        elif (left_type, right_type) in self.binary_coercions:
    310            self._set_type(expression, self.binary_coercions[(left_type, right_type)](left, right))
    311        else:
    312            self._set_type(expression, self._maybe_coerce(left_type, right_type))
    313
    314        return expression
    315
    316    def _annotate_unary(self, expression: E) -> E:
    317        self._annotate_args(expression)
    318
    319        if isinstance(expression, exp.Not):
    320            self._set_type(expression, exp.DataType.Type.BOOLEAN)
    321        else:
    322            self._set_type(expression, expression.this.type)
    323
    324        return expression
    325
    326    def _annotate_literal(self, expression: exp.Literal) -> exp.Literal:
    327        if expression.is_string:
    328            self._set_type(expression, exp.DataType.Type.VARCHAR)
    329        elif expression.is_int:
    330            self._set_type(expression, exp.DataType.Type.INT)
    331        else:
    332            self._set_type(expression, exp.DataType.Type.DOUBLE)
    333
    334        return expression
    335
    336    def _annotate_with_type(
    337        self, expression: E, target_type: exp.DataType | exp.DataType.Type
    338    ) -> E:
    339        self._set_type(expression, target_type)
    340        return self._annotate_args(expression)
    341
    342    @t.no_type_check
    343    def _annotate_by_args(
    344        self,
    345        expression: E,
    346        *args: str,
    347        promote: bool = False,
    348        array: bool = False,
    349    ) -> E:
    350        self._annotate_args(expression)
    351
    352        expressions: t.List[exp.Expression] = []
    353        for arg in args:
    354            arg_expr = expression.args.get(arg)
    355            expressions.extend(expr for expr in ensure_list(arg_expr) if expr)
    356
    357        last_datatype = None
    358        for expr in expressions:
    359            expr_type = expr.type
    360
    361            # Stop at the first nested data type found - we don't want to _maybe_coerce nested types
    362            if expr_type.args.get("nested"):
    363                last_datatype = expr_type
    364                break
    365
    366            if not expr_type.is_type(exp.DataType.Type.UNKNOWN):
    367                last_datatype = self._maybe_coerce(last_datatype or expr_type, expr_type)
    368
    369        self._set_type(expression, last_datatype or exp.DataType.Type.UNKNOWN)
    370
    371        if promote:
    372            if expression.type.this in exp.DataType.INTEGER_TYPES:
    373                self._set_type(expression, exp.DataType.Type.BIGINT)
    374            elif expression.type.this in exp.DataType.FLOAT_TYPES:
    375                self._set_type(expression, exp.DataType.Type.DOUBLE)
    376
    377        if array:
    378            self._set_type(
    379                expression,
    380                exp.DataType(
    381                    this=exp.DataType.Type.ARRAY, expressions=[expression.type], nested=True
    382                ),
    383            )
    384
    385        return expression
    386
    387    def _annotate_timeunit(
    388        self, expression: exp.TimeUnit | exp.DateTrunc
    389    ) -> exp.TimeUnit | exp.DateTrunc:
    390        self._annotate_args(expression)
    391
    392        if expression.this.type.this in exp.DataType.TEXT_TYPES:
    393            datatype = _coerce_date_literal(expression.this, expression.unit)
    394        elif expression.this.type.this in exp.DataType.TEMPORAL_TYPES:
    395            datatype = _coerce_date(expression.this, expression.unit)
    396        else:
    397            datatype = exp.DataType.Type.UNKNOWN
    398
    399        self._set_type(expression, datatype)
    400        return expression
    401
    402    def _annotate_bracket(self, expression: exp.Bracket) -> exp.Bracket:
    403        self._annotate_args(expression)
    404
    405        bracket_arg = expression.expressions[0]
    406        this = expression.this
    407
    408        if isinstance(bracket_arg, exp.Slice):
    409            self._set_type(expression, this.type)
    410        elif this.type.is_type(exp.DataType.Type.ARRAY):
    411            self._set_type(expression, seq_get(this.type.expressions, 0))
    412        elif isinstance(this, (exp.Map, exp.VarMap)) and bracket_arg in this.keys:
    413            index = this.keys.index(bracket_arg)
    414            value = seq_get(this.values, index)
    415            self._set_type(expression, value.type if value else None)
    416        else:
    417            self._set_type(expression, exp.DataType.Type.UNKNOWN)
    418
    419        return expression
    420
    421    def _annotate_div(self, expression: exp.Div) -> exp.Div:
    422        self._annotate_args(expression)
    423
    424        left_type, right_type = expression.left.type.this, expression.right.type.this  # type: ignore
    425
    426        if (
    427            expression.args.get("typed")
    428            and left_type in exp.DataType.INTEGER_TYPES
    429            and right_type in exp.DataType.INTEGER_TYPES
    430        ):
    431            self._set_type(expression, exp.DataType.Type.BIGINT)
    432        else:
    433            self._set_type(expression, self._maybe_coerce(left_type, right_type))
    434            if expression.type and expression.type.this not in exp.DataType.REAL_TYPES:
    435                self._set_type(
    436                    expression, self._maybe_coerce(expression.type, exp.DataType.Type.DOUBLE)
    437                )
    438
    439        return expression
    440
    441    def _annotate_dot(self, expression: exp.Dot) -> exp.Dot:
    442        self._annotate_args(expression)
    443        self._set_type(expression, None)
    444        this_type = expression.this.type
    445
    446        if this_type and this_type.is_type(exp.DataType.Type.STRUCT):
    447            for e in this_type.expressions:
    448                if e.name == expression.expression.name:
    449                    self._set_type(expression, e.kind)
    450                    break
    451
    452        return expression
    453
    454    def _annotate_explode(self, expression: exp.Explode) -> exp.Explode:
    455        self._annotate_args(expression)
    456        self._set_type(expression, seq_get(expression.this.type.expressions, 0))
    457        return expression
    458
    459    def _annotate_unnest(self, expression: exp.Unnest) -> exp.Unnest:
    460        self._annotate_args(expression)
    461        child = seq_get(expression.expressions, 0)
    462
    463        if child and child.is_type(exp.DataType.Type.ARRAY):
    464            expr_type = seq_get(child.type.expressions, 0)
    465        else:
    466            expr_type = None
    467
    468        self._set_type(expression, expr_type)
    469        return expression
    470
    471    def _annotate_struct_value(
    472        self, expression: exp.Expression
    473    ) -> t.Optional[exp.DataType] | exp.ColumnDef:
    474        alias = expression.args.get("alias")
    475        if alias:
    476            return exp.ColumnDef(this=alias.copy(), kind=expression.type)
    477
    478        # Case: key = value or key := value
    479        if expression.expression:
    480            return exp.ColumnDef(this=expression.this.copy(), kind=expression.expression.type)
    481
    482        return expression.type
    483
    484    def _annotate_struct(self, expression: exp.Struct) -> exp.Struct:
    485        self._annotate_args(expression)
    486        self._set_type(
    487            expression,
    488            exp.DataType(
    489                this=exp.DataType.Type.STRUCT,
    490                expressions=[self._annotate_struct_value(expr) for expr in expression.expressions],
    491                nested=True,
    492            ),
    493        )
    494        return expression
    495
    496    @t.overload
    497    def _annotate_map(self, expression: exp.Map) -> exp.Map: ...
    498
    499    @t.overload
    500    def _annotate_map(self, expression: exp.VarMap) -> exp.VarMap: ...
    501
    502    def _annotate_map(self, expression):
    503        self._annotate_args(expression)
    504
    505        keys = expression.args.get("keys")
    506        values = expression.args.get("values")
    507
    508        map_type = exp.DataType(this=exp.DataType.Type.MAP)
    509        if isinstance(keys, exp.Array) and isinstance(values, exp.Array):
    510            key_type = seq_get(keys.type.expressions, 0) or exp.DataType.Type.UNKNOWN
    511            value_type = seq_get(values.type.expressions, 0) or exp.DataType.Type.UNKNOWN
    512
    513            if key_type != exp.DataType.Type.UNKNOWN and value_type != exp.DataType.Type.UNKNOWN:
    514                map_type.set("expressions", [key_type, value_type])
    515                map_type.set("nested", True)
    516
    517        self._set_type(expression, map_type)
    518        return expression
    519
    520    def _annotate_to_map(self, expression: exp.ToMap) -> exp.ToMap:
    521        self._annotate_args(expression)
    522
    523        map_type = exp.DataType(this=exp.DataType.Type.MAP)
    524        arg = expression.this
    525        if arg.is_type(exp.DataType.Type.STRUCT):
    526            for coldef in arg.type.expressions:
    527                kind = coldef.kind
    528                if kind != exp.DataType.Type.UNKNOWN:
    529                    map_type.set("expressions", [exp.DataType.build("varchar"), kind])
    530                    map_type.set("nested", True)
    531                    break
    532
    533        self._set_type(expression, map_type)
    534        return expression
    535
    536    def _annotate_extract(self, expression: exp.Extract) -> exp.Extract:
    537        self._annotate_args(expression)
    538        part = expression.name
    539        if part == "TIME":
    540            self._set_type(expression, exp.DataType.Type.TIME)
    541        elif part == "DATE":
    542            self._set_type(expression, exp.DataType.Type.DATE)
    543        else:
    544            self._set_type(expression, exp.DataType.Type.INT)
    545        return expression

TypeAnnotator( schema: sqlglot.schema.Schema, annotators: Optional[Dict[Type[~E], Callable[[TypeAnnotator, ~E], ~E]]] = None, coerces_to: Optional[Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]]] = None, binary_coercions: Optional[Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None) View Source

    180    def __init__(
    181        self,
    182        schema: Schema,
    183        annotators: t.Optional[AnnotatorsType] = None,
    184        coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None,
    185        binary_coercions: t.Optional[BinaryCoercions] = None,
    186        dialect: t.Optional[DialectType] = None,
    187    ) -> None:
    188        self.schema = schema
    189        self.annotators = annotators or Dialect.get_or_raise(dialect).ANNOTATORS
    190        self.coerces_to = coerces_to or self.COERCES_TO
    191        self.binary_coercions = binary_coercions or self.BINARY_COERCIONS
    192
    193        # Caches the ids of annotated sub-Expressions, to ensure we only visit them once
    194        self._visited: t.Set[int] = set()

NESTED_TYPES = {<Type.ARRAY: 'ARRAY'>}
COERCES_TO: Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]] = {<Type.TEXT: 'TEXT'>: set(), <Type.NVARCHAR: 'NVARCHAR'>: {<Type.TEXT: 'TEXT'>}, <Type.VARCHAR: 'VARCHAR'>: {<Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.NCHAR: 'NCHAR'>: {<Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.CHAR: 'CHAR'>: {<Type.NCHAR: 'NCHAR'>, <Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.DOUBLE: 'DOUBLE'>: set(), <Type.FLOAT: 'FLOAT'>: {<Type.DOUBLE: 'DOUBLE'>}, <Type.DECIMAL: 'DECIMAL'>: {<Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>}, <Type.BIGINT: 'BIGINT'>: {<Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>}, <Type.INT: 'INT'>: {<Type.BIGINT: 'BIGINT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>}, <Type.SMALLINT: 'SMALLINT'>: {<Type.FLOAT: 'FLOAT'>, <Type.INT: 'INT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>, <Type.BIGINT: 'BIGINT'>}, <Type.TINYINT: 'TINYINT'>: {<Type.SMALLINT: 'SMALLINT'>, <Type.FLOAT: 'FLOAT'>, <Type.INT: 'INT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>, <Type.BIGINT: 'BIGINT'>}, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: set(), <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>}, <Type.DATETIME: 'DATETIME'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>}, <Type.DATE: 'DATE'>: {<Type.DATETIME: 'DATETIME'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>}, <Type.NULL: 'NULL'>: {<Type.BIGINT: 'BIGINT'>, <Type.DATETIME: 'DATETIME'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.TINYINT: 'TINYINT'>, <Type.VARCHAR: 'VARCHAR'>, <Type.FLOAT: 'FLOAT'>, <Type.INT: 'INT'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.DATE: 'DATE'>, <Type.DOUBLE: 'DOUBLE'>, <Type.NVARCHAR: 'NVARCHAR'>, <Type.SMALLINT: 'SMALLINT'>, <Type.NCHAR: 'NCHAR'>, <Type.CHAR: 'CHAR'>, <Type.DECIMAL: 'DECIMAL'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TEXT: 'TEXT'>}}
BINARY_COERCIONS: Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]] = {(<Type.VARCHAR: 'VARCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DECIMAL: 'DECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UINT256: 'UINT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.MEDIUMINT: 'MEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UTINYINT: 'UTINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.BIGDECIMAL: 'BIGDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.MONEY: 'MONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.DECIMAL: 'DECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UINT256: 'UINT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.MEDIUMINT: 'MEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UTINYINT: 'UTINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.BIGDECIMAL: 'BIGDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.MONEY: 'MONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NAME: 'NAME'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DECIMAL: 'DECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UINT256: 'UINT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.MEDIUMINT: 'MEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UTINYINT: 'UTINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.BIGDECIMAL: 'BIGDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.MONEY: 'MONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DECIMAL: 'DECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UINT256: 'UINT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.MEDIUMINT: 'MEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UTINYINT: 'UTINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.BIGDECIMAL: 'BIGDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.MONEY: 'MONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DECIMAL: 'DECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UINT256: 'UINT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.MEDIUMINT: 'MEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UTINYINT: 'UTINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.BIGDECIMAL: 'BIGDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.MONEY: 'MONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.UBIGINT: 'UBIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.UINT: 'UINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.DECIMAL64: 'DECIMAL64'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.SMALLMONEY: 'SMALLMONEY'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.UMEDIUMINT: 'UMEDIUMINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.USMALLINT: 'USMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.DECIMAL128: 'DECIMAL128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.UDECIMAL: 'UDECIMAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 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TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.DECIMAL32: 'DECIMAL32'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.UINT128: 'UINT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.NAME: 'NAME'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UBIGINT: 'UBIGINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT: 'UINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL64: 'DECIMAL64'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLMONEY: 'SMALLMONEY'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UMEDIUMINT: 'UMEDIUMINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.USMALLINT: 'USMALLINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL128: 'DECIMAL128'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UDECIMAL: 'UDECIMAL'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL: 'DECIMAL'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT256: 'UINT256'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MEDIUMINT: 'MEDIUMINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UTINYINT: 'UTINYINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGDECIMAL: 'BIGDECIMAL'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.MONEY: 'MONEY'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DECIMAL32: 'DECIMAL32'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.UINT128: 'UINT128'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DATE: 'DATE'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.DATE: 'DATE'>): <function TypeAnnotator.<lambda>>}
schema
annotators
coerces_to
binary_coercions
def annotate(self, expression: ~E) -> ~E: View Source

    202    def annotate(self, expression: E) -> E:
    203        for scope in traverse_scope(expression):
    204            self.annotate_scope(scope)
    205        return self._maybe_annotate(expression)  # This takes care of non-traversable expressions

def annotate_scope(self, scope: sqlglot.optimizer.scope.Scope) -> None: View Source

    207    def annotate_scope(self, scope: Scope) -> None:
    208        selects = {}
    209        for name, source in scope.sources.items():
    210            if not isinstance(source, Scope):
    211                continue
    212
    213            expression = source.expression
    214            if isinstance(expression, exp.UDTF):
    215                values = []
    216
    217                if isinstance(expression, exp.Lateral):
    218                    if isinstance(expression.this, exp.Explode):
    219                        values = [expression.this.this]
    220                elif isinstance(expression, exp.Unnest):
    221                    values = [expression]
    222                else:
    223                    values = expression.expressions[0].expressions
    224
    225                if not values:
    226                    continue
    227
    228                selects[name] = {
    229                    alias: column.type
    230                    for alias, column in zip(expression.alias_column_names, values)
    231                }
    232            elif isinstance(expression, exp.SetOperation) and len(expression.left.selects) == len(
    233                expression.right.selects
    234            ):
    235                if expression.args.get("by_name"):
    236                    r_type_by_select = {s.alias_or_name: s.type for s in expression.right.selects}
    237                    selects[name] = {
    238                        s.alias_or_name: self._maybe_coerce(
    239                            t.cast(exp.DataType, s.type),
    240                            r_type_by_select.get(s.alias_or_name) or exp.DataType.Type.UNKNOWN,
    241                        )
    242                        for s in expression.left.selects
    243                    }
    244                else:
    245                    selects[name] = {
    246                        ls.alias_or_name: self._maybe_coerce(
    247                            t.cast(exp.DataType, ls.type), t.cast(exp.DataType, rs.type)
    248                        )
    249                        for ls, rs in zip(expression.left.selects, expression.right.selects)
    250                    }
    251            else:
    252                selects[name] = {s.alias_or_name: s.type for s in expression.selects}
    253
    254        # First annotate the current scope's column references
    255        for col in scope.columns:
    256            if not col.table:
    257                continue
    258
    259            source = scope.sources.get(col.table)
    260            if isinstance(source, exp.Table):
    261                self._set_type(col, self.schema.get_column_type(source, col))
    262            elif source:
    263                if col.table in selects and col.name in selects[col.table]:
    264                    self._set_type(col, selects[col.table][col.name])
    265                elif isinstance(source.expression, exp.Unnest):
    266                    self._set_type(col, source.expression.type)
    267
    268        # Then (possibly) annotate the remaining expressions in the scope
    269        self._maybe_annotate(scope.expression)