from sqlalchemy import and_
from sqlalchemy import asc
from sqlalchemy import desc
from sqlalchemy import exc as sa_exc
from sqlalchemy import exists
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import Integer
from sqlalchemy import literal
from sqlalchemy import literal_column
from sqlalchemy import select
from sqlalchemy import String
from sqlalchemy import Table
from sqlalchemy import testing
from sqlalchemy import Text
from sqlalchemy import text
from sqlalchemy import true
from sqlalchemy import union
from sqlalchemy import util
from sqlalchemy.engine import default
from sqlalchemy.orm import aliased
from sqlalchemy.orm import backref
from sqlalchemy.orm import clear_mappers
from sqlalchemy.orm import column_property
from sqlalchemy.orm import configure_mappers
from sqlalchemy.orm import contains_eager
from sqlalchemy.orm import declarative_base
from sqlalchemy.orm import joinedload
from sqlalchemy.orm import Mapped
from sqlalchemy.orm import mapped_column
from sqlalchemy.orm import relationship
from sqlalchemy.orm import Session
from sqlalchemy.orm.context import ORMSelectCompileState
from sqlalchemy.sql import column
from sqlalchemy.sql import table
from sqlalchemy.sql.selectable import LABEL_STYLE_TABLENAME_PLUS_COL
from sqlalchemy.testing import assert_raises
from sqlalchemy.testing import assert_raises_message
from sqlalchemy.testing import AssertsCompiledSQL
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
from sqlalchemy.testing import in_
from sqlalchemy.testing import is_
from sqlalchemy.testing.entities import ComparableEntity
from sqlalchemy.testing.fixtures import fixture_session
from sqlalchemy.testing.schema import Column
from test.orm import _fixtures


class QueryTest(_fixtures.FixtureTest):
    run_setup_mappers = "once"
    run_inserts = "once"
    run_deletes = None

    @classmethod
    def setup_mappers(cls):
        (
            Node,
            composite_pk_table,
            users,
            Keyword,
            items,
            Dingaling,
            order_items,
            item_keywords,
            Item,
            User,
            dingalings,
            Address,
            keywords,
            CompositePk,
            nodes,
            Order,
            orders,
            addresses,
        ) = (
            cls.classes.Node,
            cls.tables.composite_pk_table,
            cls.tables.users,
            cls.classes.Keyword,
            cls.tables.items,
            cls.classes.Dingaling,
            cls.tables.order_items,
            cls.tables.item_keywords,
            cls.classes.Item,
            cls.classes.User,
            cls.tables.dingalings,
            cls.classes.Address,
            cls.tables.keywords,
            cls.classes.CompositePk,
            cls.tables.nodes,
            cls.classes.Order,
            cls.tables.orders,
            cls.tables.addresses,
        )

        cls.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(
                    Address, backref="user", order_by=addresses.c.id
                ),
                "orders": relationship(
                    Order, backref="user", order_by=orders.c.id
                ),  # o2m, m2o
            },
        )
        cls.mapper_registry.map_imperatively(
            Address,
            addresses,
            properties={
                "dingaling": relationship(
                    Dingaling, uselist=False, backref="address"
                )  # o2o
            },
        )
        cls.mapper_registry.map_imperatively(Dingaling, dingalings)
        cls.mapper_registry.map_imperatively(
            Order,
            orders,
            properties={
                "items": relationship(
                    Item, secondary=order_items, order_by=items.c.id
                ),  # m2m
                "address": relationship(Address),  # m2o
            },
        )
        cls.mapper_registry.map_imperatively(
            Item,
            items,
            properties={
                "keywords": relationship(Keyword, secondary=item_keywords)
            },
        )  # m2m
        cls.mapper_registry.map_imperatively(Keyword, keywords)

        cls.mapper_registry.map_imperatively(
            Node,
            nodes,
            properties={
                "children": relationship(
                    Node, backref=backref("parent", remote_side=[nodes.c.id])
                )
            },
        )

        cls.mapper_registry.map_imperatively(CompositePk, composite_pk_table)

        configure_mappers()


class QueryCorrelatesLikeSelect(QueryTest, AssertsCompiledSQL):
    __dialect__ = "default"

    query_correlated = (
        "SELECT users.name AS users_name, "
        "(SELECT count(addresses.id) AS count_1 FROM addresses "
        "WHERE addresses.user_id = users.id) AS anon_1 FROM users"
    )

    query_not_correlated = (
        "SELECT users.name AS users_name, "
        "(SELECT count(addresses.id) AS count_1 FROM addresses, users "
        "WHERE addresses.user_id = users.id) AS anon_1 FROM users"
    )

    def test_scalar_subquery_select_auto_correlate(self):
        addresses, users = self.tables.addresses, self.tables.users
        query = (
            select(func.count(addresses.c.id))
            .where(addresses.c.user_id == users.c.id)
            .scalar_subquery()
        )
        query = select(users.c.name.label("users_name"), query)
        self.assert_compile(
            query, self.query_correlated, dialect=default.DefaultDialect()
        )

    def test_scalar_subquery_select_explicit_correlate(self):
        addresses, users = self.tables.addresses, self.tables.users
        query = (
            select(func.count(addresses.c.id))
            .where(addresses.c.user_id == users.c.id)
            .correlate(users)
            .scalar_subquery()
        )
        query = select(users.c.name.label("users_name"), query)
        self.assert_compile(
            query, self.query_correlated, dialect=default.DefaultDialect()
        )

    def test_scalar_subquery_select_correlate_off(self):
        addresses, users = self.tables.addresses, self.tables.users
        query = (
            select(func.count(addresses.c.id))
            .where(addresses.c.user_id == users.c.id)
            .correlate(None)
            .scalar_subquery()
        )
        query = select(users.c.name.label("users_name"), query)
        self.assert_compile(
            query, self.query_not_correlated, dialect=default.DefaultDialect()
        )

    def test_scalar_subquery_query_auto_correlate(self):
        sess = fixture_session()
        Address, User = self.classes.Address, self.classes.User
        query = (
            sess.query(func.count(Address.id))
            .filter(Address.user_id == User.id)
            .scalar_subquery()
        )
        query = sess.query(User.name, query)
        self.assert_compile(
            query, self.query_correlated, dialect=default.DefaultDialect()
        )

    def test_scalar_subquery_query_explicit_correlate(self):
        sess = fixture_session()
        Address, User = self.classes.Address, self.classes.User
        query = (
            sess.query(func.count(Address.id))
            .filter(Address.user_id == User.id)
            .correlate(self.tables.users)
            .scalar_subquery()
        )
        query = sess.query(User.name, query)
        self.assert_compile(
            query, self.query_correlated, dialect=default.DefaultDialect()
        )

    @testing.combinations(False, None)
    def test_scalar_subquery_query_correlate_off(self, value):
        sess = fixture_session()
        Address, User = self.classes.Address, self.classes.User
        query = (
            sess.query(func.count(Address.id))
            .filter(Address.user_id == User.id)
            .correlate(value)
            .scalar_subquery()
        )
        query = sess.query(User.name, query)
        self.assert_compile(
            query, self.query_not_correlated, dialect=default.DefaultDialect()
        )

    def test_correlate_to_union(self):
        User = self.classes.User
        sess = fixture_session()

        q = sess.query(User)
        q = sess.query(User).union(q)
        u_alias = aliased(User)
        raw_subq = exists().where(u_alias.id > User.id)
        orm_subq = sess.query(u_alias).filter(u_alias.id > User.id).exists()

        self.assert_compile(
            q.add_columns(raw_subq),
            "SELECT anon_1.users_id AS anon_1_users_id, "
            "anon_1.users_name AS anon_1_users_name, "
            "EXISTS (SELECT * FROM users AS users_1 "
            "WHERE users_1.id > anon_1.users_id) AS anon_2 "
            "FROM ("
            "SELECT users.id AS users_id, users.name AS users_name FROM users "
            "UNION SELECT users.id AS users_id, users.name AS users_name "
            "FROM users) AS anon_1",
        )

        # only difference is "1" vs. "*" (not sure why that is)
        self.assert_compile(
            q.add_columns(orm_subq),
            "SELECT anon_1.users_id AS anon_1_users_id, "
            "anon_1.users_name AS anon_1_users_name, "
            "EXISTS (SELECT 1 FROM users AS users_1 "
            "WHERE users_1.id > anon_1.users_id) AS anon_2 "
            "FROM ("
            "SELECT users.id AS users_id, users.name AS users_name FROM users "
            "UNION SELECT users.id AS users_id, users.name AS users_name "
            "FROM users) AS anon_1",
        )

    def test_correlate_to_union_w_labels_newstyle(self):
        User = self.classes.User

        q = select(User).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)

        q = (
            select(User)
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .union(q)
            .subquery()
        )

        u_alias = aliased(User)

        raw_subq = exists().where(u_alias.id > q.c[0])

        self.assert_compile(
            select(q, raw_subq).set_label_style(
                LABEL_STYLE_TABLENAME_PLUS_COL
            ),
            "SELECT anon_1.users_id AS anon_1_users_id, "
            "anon_1.users_name AS anon_1_users_name, "
            "EXISTS (SELECT * FROM users AS users_1 "
            "WHERE users_1.id > anon_1.users_id) AS anon_2 "
            "FROM ("
            "SELECT users.id AS users_id, users.name AS users_name FROM users "
            "UNION SELECT users.id AS users_id, users.name AS users_name "
            "FROM users) AS anon_1",
        )

    def test_correlate_to_union_newstyle(self):
        User = self.classes.User

        q = select(User)

        q = select(User).union(q).subquery()

        u_alias = aliased(User)

        raw_subq = exists().where(u_alias.id > q.c[0])

        self.assert_compile(
            select(q, raw_subq),
            "SELECT anon_1.id, anon_1.name, EXISTS "
            "(SELECT * FROM users AS users_1 WHERE users_1.id > anon_1.id) "
            "AS anon_2 FROM (SELECT users.id AS id, users.name AS name "
            "FROM users "
            "UNION SELECT users.id AS id, users.name AS name FROM users) "
            "AS anon_1",
        )


class RawSelectTest(QueryTest, AssertsCompiledSQL):
    """compare a bunch of select() tests with the equivalent Query using
    straight table/columns.

    Results should be the same as Query should act as a select() pass-
    thru for ClauseElement entities.

    """

    __dialect__ = "default"

    def test_select(self):
        addresses, users = self.tables.addresses, self.tables.users

        sess = fixture_session()

        self.assert_compile(
            sess.query(users)
            .select_from(users.select().subquery())
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .statement,
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) "
            "AS anon_1, users",
        )

        self.assert_compile(
            sess.query(users, exists(text("1")).select_from(addresses))
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .statement,
            "SELECT users.id AS users_id, users.name AS users_name, EXISTS "
            "(SELECT 1 FROM addresses) AS anon_1 FROM users",
        )

        # a little tedious here, adding labels to work around Query's
        # auto-labelling.
        s = (
            sess.query(
                addresses.c.id.label("id"),
                addresses.c.email_address.label("email"),
            )
            .filter(addresses.c.user_id == users.c.id)
            .correlate(users)
            .statement.alias()
        )

        self.assert_compile(
            sess.query(users, s.c.email)
            .select_from(users.join(s, s.c.id == users.c.id))
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .statement,
            "SELECT users.id AS users_id, users.name AS users_name, "
            "anon_1.email AS anon_1_email "
            "FROM users JOIN (SELECT addresses.id AS id, "
            "addresses.email_address AS email FROM addresses, users "
            "WHERE addresses.user_id = users.id) AS anon_1 "
            "ON anon_1.id = users.id",
        )

        x = func.lala(users.c.id).label("foo")
        self.assert_compile(
            sess.query(x).filter(x == 5).statement,
            "SELECT lala(users.id) AS foo FROM users WHERE "
            "lala(users.id) = :param_1",
        )

        self.assert_compile(
            sess.query(func.sum(x).label("bar")).statement,
            "SELECT sum(lala(users.id)) AS bar FROM users",
        )


class EntityFromSubqueryTest(QueryTest, AssertsCompiledSQL):
    # formerly FromSelfTest

    __dialect__ = "default"

    def test_filter(self):
        User = self.classes.User

        subq = select(User).filter(User.id.in_([8, 9])).subquery()
        q = fixture_session().query(aliased(User, subq))
        eq_(
            [User(id=8), User(id=9)],
            q.all(),
        )

        subq = select(User).order_by(User.id).slice(1, 3).subquery()
        q = fixture_session().query(aliased(User, subq))
        eq_([User(id=8), User(id=9)], q.all())

        subq = select(User).filter(User.id.in_([8, 9])).subquery()
        u = aliased(User, subq)
        q = fixture_session().query(u).order_by(u.id)
        eq_(
            [User(id=8)],
            list(q[0:1]),
        )

    def test_join(self):
        User, Address = self.classes.User, self.classes.Address

        stmt = select(User).filter(User.id.in_([8, 9])).subquery()

        u = aliased(User, stmt)

        q = (
            fixture_session()
            .query(u)
            .join(u.addresses)
            .add_entity(Address)
            .order_by(u.id, Address.id)
        )
        eq_(
            [
                (User(id=8), Address(id=2)),
                (User(id=8), Address(id=3)),
                (User(id=8), Address(id=4)),
                (User(id=9), Address(id=5)),
            ],
            q.all(),
        )

    def test_group_by(self):
        Address = self.classes.Address

        subq = (
            select(Address.user_id, func.count(Address.id).label("count"))
            .group_by(Address.user_id)
            .order_by(Address.user_id)
            .subquery()
        )
        # there's no reason to do aliased(Address) in this case but we're just
        # testing
        aq = aliased(Address, subq)
        q = fixture_session().query(aq.user_id, subq.c.count)
        eq_(
            q.all(),
            [(7, 1), (8, 3), (9, 1)],
        )

        subq = select(Address.user_id, Address.id)
        aq = aliased(Address, subq)

        q = (
            fixture_session()
            .query(aq.user_id, func.count(aq.id))
            .group_by(aq.user_id)
            .order_by(aq.user_id)
        )

        eq_(
            q.all(),
            [(7, 1), (8, 3), (9, 1)],
        )

    def test_error_w_aliased_against_select(self):
        User = self.classes.User

        s = fixture_session()

        stmt = select(User.id)

        assert_raises_message(
            sa_exc.ArgumentError,
            "Column expression, FROM clause, or other .* expected, got "
            "<sqlalchemy.sql.selectable.Select .*> object resolved from "
            "<AliasedClass .* User> object. To create a FROM clause from "
            "a <class 'sqlalchemy.sql.selectable.Select'> object",
            s.query,
            aliased(User, stmt),
        )

    def test_having(self):
        User = self.classes.User

        s = fixture_session()

        stmt = (
            select(User.id)
            .group_by(User.id)
            .having(User.id > 5)
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .subquery()
        )

        q = s.query(aliased(User, stmt))
        self.assert_compile(
            q,
            "SELECT anon_1.users_id AS anon_1_users_id FROM "
            "(SELECT users.id AS users_id FROM users GROUP "
            "BY users.id HAVING users.id > :id_1) AS anon_1",
        )

    def test_no_joinedload(self):
        User = self.classes.User

        s = fixture_session()

        subq = (
            select(User)
            .options(joinedload(User.addresses))
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .subquery()
        )

        uq = aliased(User, subq)
        q = s.query(uq)

        # in 2.0 style, joinedload in the subquery is just ignored
        self.assert_compile(
            q.statement,
            "SELECT anon_1.users_id, anon_1.users_name FROM (SELECT "
            "users.id AS users_id, users.name AS users_name FROM users) "
            "AS anon_1",
        )

        # needs to be on the outside
        self.assert_compile(
            q.options(joinedload(uq.addresses)).statement,
            "SELECT anon_1.users_id, anon_1.users_name, addresses_1.id, "
            "addresses_1.user_id, addresses_1.email_address FROM "
            "(SELECT users.id AS users_id, users.name AS "
            "users_name FROM users) AS anon_1 LEFT OUTER JOIN "
            "addresses AS addresses_1 ON anon_1.users_id = "
            "addresses_1.user_id ORDER BY addresses_1.id",
        )

    def test_aliases(self):
        """test that aliased objects are accessible externally to a from_self()
        call."""

        User, Address = self.classes.User, self.classes.Address

        s = fixture_session()

        ualias = aliased(User)

        subq = select(User, ualias).filter(User.id > ualias.id).subquery()

        uq1 = aliased(User, subq)
        uq2 = aliased(ualias, subq)

        q = s.query(uq1.name, uq2.name).order_by(uq1.name, uq2.name)

        self.assert_compile(
            q,
            "SELECT anon_1.name AS anon_1_name, anon_1.name_1 AS "
            "anon_1_name_1 FROM "
            "(SELECT users.id AS id, users.name AS name, users_1.id AS id_1, "
            "users_1.name AS name_1 FROM users, users AS users_1 "
            "WHERE users.id > users_1.id) AS anon_1 "
            "ORDER BY anon_1.name, anon_1.name_1",
        )

        eq_(
            q.all(),
            [
                ("chuck", "ed"),
                ("chuck", "fred"),
                ("chuck", "jack"),
                ("ed", "jack"),
                ("fred", "ed"),
                ("fred", "jack"),
            ],
        )

        q = (
            s.query(uq1.name, uq2.name)
            .filter(uq2.name == "ed")
            .order_by(uq1.name, uq2.name)
        )

        eq_(
            q.all(),
            [("chuck", "ed"), ("fred", "ed")],
        )

        q = (
            s.query(uq2.name, Address.email_address)
            .join(uq2.addresses)
            .order_by(uq2.name, Address.email_address)
        )

        eq_(
            q.all(),
            [
                ("ed", "fred@fred.com"),
                ("jack", "ed@bettyboop.com"),
                ("jack", "ed@lala.com"),
                ("jack", "ed@wood.com"),
                ("jack", "fred@fred.com"),
            ],
        )

    def test_nested_aliases_none_to_none(self):
        """test #7576"""

        User = self.classes.User

        u1 = aliased(User)
        u2 = aliased(u1)

        self.assert_compile(
            select(u2), "SELECT users_1.id, users_1.name FROM users AS users_1"
        )

    def test_nested_alias_none_to_subquery(self):
        """test #7576"""

        User = self.classes.User

        subq = select(User.id, User.name).subquery()

        u1 = aliased(User, subq)

        self.assert_compile(
            select(u1),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) AS anon_1",
        )

        u2 = aliased(u1)

        self.assert_compile(
            select(u2),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) AS anon_1",
        )

    def test_nested_alias_subquery_to_subquery_w_replace(self):
        """test #7576"""

        User = self.classes.User

        subq = select(User.id, User.name).subquery()

        u1 = aliased(User, subq)

        self.assert_compile(
            select(u1),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) AS anon_1",
        )

        u2 = aliased(u1, subq)

        self.assert_compile(
            select(u2),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) AS anon_1",
        )

    def test_nested_alias_subquery_to_subquery_w_adaption(self):
        """test #7576"""

        User = self.classes.User

        inner_subq = select(User.id, User.name).subquery()

        u1 = aliased(User, inner_subq)

        self.assert_compile(
            select(u1),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) AS anon_1",
        )

        outer_subq = select(u1.id, u1.name).subquery()

        u2 = aliased(u1, outer_subq)

        self.assert_compile(
            select(u2),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT anon_2.id AS id, anon_2.name AS name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) "
            "AS anon_2) AS anon_1",
        )

        outer_subq = (
            select(u1.id, u1.name, User.id, User.name)
            .where(u1.id > User.id)
            .subquery()
        )
        u2 = aliased(u1, outer_subq)

        # query here is:
        # SELECT derived_from_inner_subq.id, derived_from_inner_subq.name
        # FROM (
        #    SELECT ... FROM inner_subq, users WHERE inner_subq.id > users.id
        # ) as outer_subq
        self.assert_compile(
            select(u2),
            "SELECT anon_1.id, anon_1.name FROM "
            "(SELECT anon_2.id AS id, anon_2.name AS name, users.id AS id_1, "
            "users.name AS name_1 FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) "
            "AS anon_2, users "
            "WHERE anon_2.id > users.id) AS anon_1",
        )

    def test_nested_alias_subquery_w_alias_to_none(self):
        """test #7576"""

        User = self.classes.User

        u1 = aliased(User)

        self.assert_compile(
            select(u1), "SELECT users_1.id, users_1.name FROM users AS users_1"
        )

        subq = (
            select(User.id, User.name, u1.id, u1.name)
            .where(User.id > u1.id)
            .subquery()
        )

        # aliased against aliased w/ subquery means, look for u1 inside the
        # given subquery. adapt that.
        u2 = aliased(u1, subq)

        self.assert_compile(
            select(u2),
            "SELECT anon_1.id_1, anon_1.name_1 FROM "
            "(SELECT users.id AS id, users.name AS name, "
            "users_1.id AS id_1, users_1.name AS name_1 "
            "FROM users, users AS users_1 "
            "WHERE users.id > users_1.id) AS anon_1",
        )

        subq = select(User.id, User.name).subquery()
        u2 = aliased(u1, subq)

        # given that, it makes sense that if we remove "u1" from the subquery,
        # we get a second FROM element like below.
        # this is actually a form of the "wrong" query that was
        # reported in #7576, but this is the case where we have a subquery,
        # so yes, we need to adapt the "inner" alias to it.

        self.assert_compile(
            select(u2),
            "SELECT users_1.id, users_1.name FROM "
            "(SELECT users.id AS id, users.name AS name FROM users) "
            "AS anon_1, users AS users_1",
        )

    def test_multiple_entities(self):
        User, Address = self.classes.User, self.classes.Address

        sess = fixture_session()

        subq = (
            select(User, Address)
            .filter(User.id == Address.user_id)
            .filter(Address.id.in_([2, 5]))
            .subquery()
        )

        uq = aliased(User, subq)
        aq = aliased(Address, subq)

        eq_(
            sess.query(uq, aq).all(),
            [(User(id=8), Address(id=2)), (User(id=9), Address(id=5))],
        )

        eq_(
            sess.query(uq, aq).options(joinedload(uq.addresses)).first(),
            (
                User(id=8, addresses=[Address(), Address(), Address()]),
                Address(id=2),
            ),
        )

    def test_multiple_with_column_entities_oldstyle(self):
        # this is now very awkward and not very useful
        User = self.classes.User

        subq = select(User.id).subquery()

        uq = aliased(User, subq)

        subq2 = (
            select(uq.id)
            .add_columns(func.count().label("foo"))
            .group_by(uq.id)
            .order_by(uq.id)
            .subquery()
        )

        uq2 = aliased(User, subq2)
        sess = fixture_session()

        eq_(
            sess.query(uq2.id, subq2.c.foo).all(),
            [(7, 1), (8, 1), (9, 1), (10, 1)],
        )

    def test_multiple_with_column_entities_newstyle(self):
        User = self.classes.User

        sess = fixture_session()

        q1 = sess.query(User.id)

        subq1 = aliased(User, q1.subquery())

        q2 = sess.query(subq1.id).add_columns(func.count().label("foo"))
        q2 = q2.group_by(subq1.id).order_by(subq1.id).subquery()

        q3 = sess.query(q2)
        eq_(
            q3.all(),
            [(7, 1), (8, 1), (9, 1), (10, 1)],
        )

        q3 = select(q2)
        eq_(sess.execute(q3).fetchall(), [(7, 1), (8, 1), (9, 1), (10, 1)])


class ColumnAccessTest(QueryTest, AssertsCompiledSQL):
    """test access of columns after _from_selectable has been applied"""

    __dialect__ = "default"

    def test_select_from_no_aliasing(self):
        User = self.classes.User
        sess = fixture_session()

        q = sess.query(User)
        q = sess.query(User).select_from(q.statement.subquery())
        self.assert_compile(
            q.filter(User.name == "ed"),
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM (SELECT users.id AS id, users.name AS name FROM "
            "users) AS anon_1, users WHERE users.name = :name_1",
        )

    def test_anonymous_expression_oldstyle(self):
        # relies upon _orm_only_from_obj_alias setting
        from sqlalchemy.sql import column

        sess = fixture_session()
        c1, c2 = column("c1"), column("c2")
        q1 = sess.query(c1, c2).filter(c1 == "dog")
        q2 = sess.query(c1, c2).filter(c1 == "cat")
        q3 = q1.union(q2)
        self.assert_compile(
            q3.order_by(c1),
            "SELECT anon_1.c1 AS anon_1_c1, anon_1.c2 "
            "AS anon_1_c2 FROM (SELECT c1, c2 WHERE "
            "c1 = :c1_1 UNION SELECT c1, c2 "
            "WHERE c1 = :c1_2) AS anon_1 ORDER BY anon_1.c1",
        )

    def test_anonymous_expression_newstyle(self):
        from sqlalchemy.sql import column

        c1, c2 = column("c1"), column("c2")
        q1 = select(c1, c2).where(c1 == "dog")
        q2 = select(c1, c2).where(c1 == "cat")
        subq = q1.union(q2).subquery()
        q3 = select(subq).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)

        self.assert_compile(
            q3.order_by(subq.c.c1),
            "SELECT anon_1.c1 AS anon_1_c1, anon_1.c2 "
            "AS anon_1_c2 FROM (SELECT c1, c2 WHERE "
            "c1 = :c1_1 UNION SELECT c1, c2 "
            "WHERE c1 = :c1_2) AS anon_1 ORDER BY anon_1.c1",
        )

    def test_table_anonymous_expression_from_self_twice_newstyle(self):
        from sqlalchemy.sql import column

        t1 = table("t1", column("c1"), column("c2"))
        stmt = (
            select(t1.c.c1, t1.c.c2)
            .where(t1.c.c1 == "dog")
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
        )

        subq1 = (
            stmt.subquery("anon_2")
            .select()
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
        )

        subq2 = subq1.subquery("anon_1")

        q1 = select(subq2).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)

        self.assert_compile(
            # as in test_anonymous_expression_from_self_twice_newstyle_wlabels,
            # set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL) means the
            # subquery cols have long names.  however,
            # here we illustrate if they did use
            # set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL), but they also
            # named the subqueries explicitly as one would certainly do if they
            # were using set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL),
            # we can get at that column based on how
            # it is aliased, no different than plain SQL.
            q1.order_by(subq2.c.anon_2_t1_c1),
            "SELECT anon_1.anon_2_t1_c1 "
            "AS anon_1_anon_2_t1_c1, anon_1.anon_2_t1_c2 "
            "AS anon_1_anon_2_t1_c2 "
            "FROM (SELECT anon_2.t1_c1 AS anon_2_t1_c1, "
            "anon_2.t1_c2 AS anon_2_t1_c2 FROM (SELECT t1.c1 AS t1_c1, t1.c2 "
            "AS t1_c2 FROM t1 WHERE t1.c1 = :c1_1) AS anon_2) AS anon_1 "
            "ORDER BY anon_1.anon_2_t1_c1",
        )

    def test_anonymous_expression_from_self_twice_newstyle_wlabels(self):
        from sqlalchemy.sql import column

        c1, c2 = column("c1"), column("c2")
        subq = select(c1, c2).where(c1 == "dog").subquery()

        subq2 = (
            select(subq)
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .subquery()
        )

        stmt = select(subq2).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)

        self.assert_compile(
            # because of the apply labels we don't have simple keys on
            # subq2.c
            stmt.order_by(subq2.c.corresponding_column(c1)),
            "SELECT anon_1.anon_2_c1 AS anon_1_anon_2_c1, anon_1.anon_2_c2 AS "
            "anon_1_anon_2_c2 FROM (SELECT anon_2.c1 AS anon_2_c1, anon_2.c2 "
            "AS anon_2_c2 "
            "FROM (SELECT c1, c2 WHERE c1 = :c1_1) AS "
            "anon_2) AS anon_1 ORDER BY anon_1.anon_2_c1",
        )

    def test_anonymous_expression_from_self_twice_newstyle_wolabels(self):
        from sqlalchemy.sql import column

        c1, c2 = column("c1"), column("c2")
        subq = select(c1, c2).where(c1 == "dog").subquery()

        subq2 = select(subq).subquery()

        stmt = select(subq2)

        self.assert_compile(
            # without labels we can access .c1 but the statement will not
            # have the same labeling applied (which does not matter)
            stmt.order_by(subq2.c.c1),
            "SELECT anon_1.c1, anon_1.c2 FROM "
            "(SELECT anon_2.c1 AS c1, anon_2.c2 AS c2 "
            "FROM (SELECT c1, c2 WHERE c1 = :c1_1) AS "
            "anon_2) AS anon_1 ORDER BY anon_1.c1",
        )

    def test_anonymous_labeled_expression_oldstyle(self):
        # relies upon _orm_only_from_obj_alias setting
        sess = fixture_session()
        c1, c2 = column("c1"), column("c2")
        q1 = sess.query(c1.label("foo"), c2.label("bar")).filter(c1 == "dog")
        q2 = sess.query(c1.label("foo"), c2.label("bar")).filter(c1 == "cat")
        q3 = q1.union(q2)
        self.assert_compile(
            q3.order_by(c1),
            "SELECT anon_1.foo AS anon_1_foo, anon_1.bar AS anon_1_bar FROM "
            "(SELECT c1 AS foo, c2 AS bar WHERE c1 = :c1_1 UNION SELECT "
            "c1 AS foo, c2 AS bar "
            "WHERE c1 = :c1_2) AS anon_1 ORDER BY anon_1.foo",
        )

    def test_anonymous_labeled_expression_newstyle(self):
        c1, c2 = column("c1"), column("c2")
        q1 = select(c1.label("foo"), c2.label("bar")).where(c1 == "dog")
        q2 = select(c1.label("foo"), c2.label("bar")).where(c1 == "cat")
        subq = union(q1, q2).subquery()
        q3 = select(subq).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
        self.assert_compile(
            q3.order_by(subq.c.foo),
            "SELECT anon_1.foo AS anon_1_foo, anon_1.bar AS anon_1_bar FROM "
            "(SELECT c1 AS foo, c2 AS bar WHERE c1 = :c1_1 UNION SELECT "
            "c1 AS foo, c2 AS bar "
            "WHERE c1 = :c1_2) AS anon_1 ORDER BY anon_1.foo",
        )

    def test_anonymous_expression_plus_flag_aliased_join_newstyle(self):
        User = self.classes.User
        Address = self.classes.Address
        addresses = self.tables.addresses

        sess = fixture_session()
        q1 = sess.query(User.id).filter(User.id > 5)

        uq = aliased(
            User, q1.set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL).subquery()
        )

        aa = aliased(Address)
        q1 = (
            sess.query(uq.id)
            .join(uq.addresses.of_type(aa))
            .order_by(uq.id, aa.id, addresses.c.id)
        )

        self.assert_compile(
            q1,
            "SELECT anon_1.users_id AS anon_1_users_id "
            "FROM (SELECT users.id AS users_id FROM users "
            "WHERE users.id > :id_1) AS anon_1 JOIN addresses AS addresses_1 "
            "ON anon_1.users_id = addresses_1.user_id "
            "ORDER BY anon_1.users_id, addresses_1.id, addresses.id",
        )

    def test_anonymous_expression_plus_explicit_aliased_join_newstyle(self):
        """test that the 'dont alias non-ORM' rule remains for other
        kinds of aliasing when _from_selectable() is used."""

        User = self.classes.User
        Address = self.classes.Address
        addresses = self.tables.addresses

        sess = fixture_session()
        q1 = (
            sess.query(User.id)
            .filter(User.id > 5)
            .set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
            .subquery()
        )

        uq = aliased(User, q1)

        aa = aliased(Address)

        q1 = (
            sess.query(uq.id)
            .join(aa, uq.addresses)
            .order_by(uq.id, aa.id, addresses.c.id)
        )
        self.assert_compile(
            q1,
            "SELECT anon_1.users_id AS anon_1_users_id "
            "FROM (SELECT users.id AS users_id FROM users "
            "WHERE users.id > :id_1) AS anon_1 JOIN addresses AS addresses_1 "
            "ON anon_1.users_id = addresses_1.user_id "
            "ORDER BY anon_1.users_id, addresses_1.id, addresses.id",
        )


class AddEntityEquivalenceTest(fixtures.MappedTest, AssertsCompiledSQL):
    run_setup_mappers = "once"

    @classmethod
    def define_tables(cls, metadata):
        Table(
            "a",
            metadata,
            Column(
                "id", Integer, primary_key=True, test_needs_autoincrement=True
            ),
            Column("name", String(50)),
            Column("type", String(20)),
            Column("bid", Integer, ForeignKey("b.id")),
        )

        Table(
            "b",
            metadata,
            Column(
                "id", Integer, primary_key=True, test_needs_autoincrement=True
            ),
            Column("name", String(50)),
            Column("type", String(20)),
        )

        Table(
            "c",
            metadata,
            Column("id", Integer, ForeignKey("b.id"), primary_key=True),
            Column("age", Integer),
        )

        Table(
            "d",
            metadata,
            Column("id", Integer, ForeignKey("a.id"), primary_key=True),
            Column("dede", Integer),
        )

    @classmethod
    def setup_classes(cls):
        class A(cls.Comparable):
            pass

        class B(cls.Comparable):
            pass

        class C(B):
            pass

        class D(A):
            pass

    @classmethod
    def setup_mappers(cls):
        a, c, b, d = (cls.tables.a, cls.tables.c, cls.tables.b, cls.tables.d)
        A, B, C, D = cls.classes("A", "B", "C", "D")

        cls.mapper_registry.map_imperatively(
            A,
            a,
            polymorphic_identity="a",
            polymorphic_on=a.c.type,
            with_polymorphic=("*", None),
            properties={
                "link": relationship(B, uselist=False, backref="back")
            },
        )
        cls.mapper_registry.map_imperatively(
            B,
            b,
            polymorphic_identity="b",
            polymorphic_on=b.c.type,
            with_polymorphic=("*", None),
        )
        cls.mapper_registry.map_imperatively(
            C, c, inherits=B, polymorphic_identity="c"
        )
        cls.mapper_registry.map_imperatively(
            D, d, inherits=A, polymorphic_identity="d"
        )

    @classmethod
    def insert_data(cls, connection):
        A, C, B = (cls.classes.A, cls.classes.C, cls.classes.B)

        sess = Session(connection)
        sess.add_all(
            [
                B(name="b1"),
                A(name="a1", link=C(name="c1", age=3)),
                C(name="c2", age=6),
                A(name="a2"),
            ]
        )
        sess.flush()

    def test_add_entity_equivalence(self):
        A, C, B = (self.classes.A, self.classes.C, self.classes.B)

        sess = fixture_session()

        for q in [
            sess.query(A, B).join(A.link),
            sess.query(A).join(A.link).add_entity(B),
        ]:
            eq_(
                q.all(),
                [
                    (
                        A(bid=2, id=1, name="a1", type="a"),
                        C(age=3, id=2, name="c1", type="c"),
                    )
                ],
            )

        for q in [
            sess.query(B, A).join(B.back),
            sess.query(B).join(B.back).add_entity(A),
            sess.query(B).add_entity(A).join(B.back),
        ]:
            eq_(
                q.all(),
                [
                    (
                        C(age=3, id=2, name="c1", type="c"),
                        A(bid=2, id=1, name="a1", type="a"),
                    )
                ],
            )


class InstancesTest(QueryTest, AssertsCompiledSQL):
    def test_from_alias_two_needs_nothing(self):
        User, addresses, users = (
            self.classes.User,
            self.tables.addresses,
            self.tables.users,
        )

        query = (
            users.select()
            .where(users.c.id == 7)
            .union(users.select().where(users.c.id > 7))
            .alias("ulist")
            .outerjoin(addresses)
            .select()
            .order_by(text("ulist.id"), addresses.c.id)
        )
        sess = fixture_session()
        q = sess.query(User)

        def go():
            result = (
                q.options(contains_eager(User.addresses))
                .from_statement(query)
                .all()
            )
            assert self.static.user_address_result == result

        self.assert_sql_count(testing.db, go, 1)

    def test_from_alias_two(self):
        User, addresses, users = (
            self.classes.User,
            self.tables.addresses,
            self.tables.users,
        )

        query = (
            users.select()
            .where(users.c.id == 7)
            .union(users.select().where(users.c.id > 7))
            .alias("ulist")
            .outerjoin(addresses)
            .select()
            .order_by(text("ulist.id"), addresses.c.id)
        )
        sess = fixture_session()

        def go():
            ulist = query.alias("ulist")
            ulist_alias = aliased(User, alias=ulist)
            q = sess.query(ulist_alias)

            result = q.options(
                contains_eager(ulist_alias.addresses, alias=ulist)
            ).all()
            assert self.static.user_address_result == result

        self.assert_sql_count(testing.db, go, 1)

    def test_from_alias_three(self):
        User, addresses, users = (
            self.classes.User,
            self.tables.addresses,
            self.tables.users,
        )

        query = (
            users.select()
            .where(users.c.id == 7)
            .union(users.select().where(users.c.id > 7))
            .alias("ulist")
            .outerjoin(addresses)
            .select()
            .order_by(text("ulist.id"), addresses.c.id)
        )
        sess = fixture_session()

        def go():
            qs = query.subquery()
            ua = aliased(User, qs)
            result = (
                sess.query(ua)
                .options(contains_eager(ua.addresses, alias=qs))
                .all()
            )
            assert self.static.user_address_result == result

        self.assert_sql_count(testing.db, go, 1)

    def test_from_alias_four(self):
        User, addresses, users = (
            self.classes.User,
            self.tables.addresses,
            self.tables.users,
        )
        Address = self.classes.Address

        sess = fixture_session()

        adalias = addresses.alias()
        query = (
            users.select()
            .where(users.c.id == 7)
            .union(users.select().where(users.c.id > 7))
            .alias("ulist")
            .outerjoin(adalias)
            .select()
            .order_by(text("ulist.id"), adalias.c.id)
        )

        def go():
            qs = query.subquery()
            ua = aliased(User, qs)
            aa = aliased(Address, qs)
            result = (
                sess.query(ua)
                .options(contains_eager(ua.addresses.of_type(aa)))
                .all()
            )
            assert self.static.user_address_result == result

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_one(self):
        addresses, User = (self.tables.addresses, self.classes.User)

        sess = fixture_session()

        # test that contains_eager suppresses the normal outer join rendering
        q = (
            sess.query(User)
            .outerjoin(User.addresses)
            .options(contains_eager(User.addresses))
            .order_by(User.id, addresses.c.id)
        )
        self.assert_compile(
            q.set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL).statement,
            "SELECT addresses.id AS addresses_id, "
            "addresses.user_id AS addresses_user_id, "
            "addresses.email_address AS "
            "addresses_email_address, users.id AS "
            "users_id, users.name AS users_name FROM "
            "users LEFT OUTER JOIN addresses ON "
            "users.id = addresses.user_id ORDER BY "
            "users.id, addresses.id",
            dialect=default.DefaultDialect(),
        )

        def go():
            assert self.static.user_address_result == q.all()

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_two(self):
        users, addresses, User = (
            self.tables.users,
            self.tables.addresses,
            self.classes.User,
        )

        sess = fixture_session()

        adalias = addresses.alias()
        qq = users.outerjoin(adalias)
        ua = aliased(User, qq)
        q = (
            sess.query(ua)
            .options(contains_eager(ua.addresses, alias=adalias))
            .order_by(User.id, adalias.c.id)
        )

        def go():
            eq_(self.static.user_address_result, q.all())

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_four(self):
        users, addresses, User = (
            self.tables.users,
            self.tables.addresses,
            self.classes.User,
        )

        sess = fixture_session()

        selectquery = (
            users.outerjoin(addresses)
            .select()
            .where(users.c.id < 10)
            .order_by(users.c.id, addresses.c.id)
        )

        q = sess.query(User)

        def go():
            result = (
                q.options(contains_eager(User.addresses))
                .from_statement(selectquery)
                .all()
            )
            assert self.static.user_address_result[0:3] == result

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_four_future(self):
        users, addresses, User = (
            self.tables.users,
            self.tables.addresses,
            self.classes.User,
        )

        sess = fixture_session(future=True)

        selectquery = (
            users.outerjoin(addresses)
            .select()
            .where(users.c.id < 10)
            .order_by(users.c.id, addresses.c.id)
        )

        q = select(User)

        def go():
            result = (
                sess.execute(
                    q.options(contains_eager(User.addresses)).from_statement(
                        selectquery
                    )
                )
                .scalars()
                .unique()
                .all()
            )
            assert self.static.user_address_result[0:3] == result

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_aliased(self):
        User, Address = self.classes.User, self.classes.Address

        sess = fixture_session()
        q = sess.query(User)

        # Aliased object
        adalias = aliased(Address)

        def go():
            result = (
                q.options(contains_eager(User.addresses.of_type(adalias)))
                .outerjoin(adalias, User.addresses)
                .order_by(User.id, adalias.id)
            )
            assert self.static.user_address_result == result.all()

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_multi_alias(self):
        orders, items, users, order_items, User = (
            self.tables.orders,
            self.tables.items,
            self.tables.users,
            self.tables.order_items,
            self.classes.User,
        )
        Order = self.classes.Order

        sess = fixture_session()
        q = sess.query(User)

        oalias = orders.alias("o1")
        ialias = items.alias("i1")
        query = (
            users.outerjoin(oalias)
            .outerjoin(order_items)
            .outerjoin(ialias)
            .select()
            .order_by(users.c.id, oalias.c.id, ialias.c.id)
        )

        # test using Alias with more than one level deep

        def go():
            result = list(
                q.options(
                    contains_eager(User.orders, alias=oalias).contains_eager(
                        Order.items, alias=ialias
                    ),
                ).from_statement(query)
            )
            assert self.static.user_order_result == result

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_multi_aliased(self):
        Item, User, Order = (
            self.classes.Item,
            self.classes.User,
            self.classes.Order,
        )

        sess = fixture_session()
        q = sess.query(User)

        # test using Aliased with more than one level deep
        oalias = aliased(Order)
        ialias = aliased(Item)

        def go():
            result = (
                q.options(
                    contains_eager(User.orders, alias=oalias),
                    contains_eager(User.orders, Order.items, alias=ialias),
                )
                .outerjoin(oalias, User.orders)
                .outerjoin(ialias, oalias.items)
                .order_by(User.id, oalias.id, ialias.id)
            )
            assert self.static.user_order_result == result.all()

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_multi_aliased_of_type(self):
        # test newer style that does not use the alias parameter
        Item, User, Order = (
            self.classes.Item,
            self.classes.User,
            self.classes.Order,
        )

        sess = fixture_session()
        q = sess.query(User)

        # test using Aliased with more than one level deep
        oalias = aliased(Order)
        ialias = aliased(Item)

        def go():
            result = (
                q.options(
                    contains_eager(User.orders.of_type(oalias)).contains_eager(
                        oalias.items.of_type(ialias)
                    )
                )
                .outerjoin(User.orders.of_type(oalias))
                .outerjoin(oalias.items.of_type(ialias))
                .order_by(User.id, oalias.id, ialias.id)
            )
            assert self.static.user_order_result == result.all()

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_chaining(self):
        """test that contains_eager() 'chains' by default."""

        Dingaling, User, Address = (
            self.classes.Dingaling,
            self.classes.User,
            self.classes.Address,
        )

        sess = fixture_session()
        q = (
            sess.query(User)
            .join(User.addresses)
            .join(Address.dingaling)
            .options(contains_eager(User.addresses, Address.dingaling))
        )

        def go():
            eq_(
                q.all(),
                # note we only load the Address records that
                # have a Dingaling here due to using the inner
                # join for the eager load
                [
                    User(
                        name="ed",
                        addresses=[
                            Address(
                                email_address="ed@wood.com",
                                dingaling=Dingaling(data="ding 1/2"),
                            )
                        ],
                    ),
                    User(
                        name="fred",
                        addresses=[
                            Address(
                                email_address="fred@fred.com",
                                dingaling=Dingaling(data="ding 2/5"),
                            )
                        ],
                    ),
                ],
            )

        self.assert_sql_count(testing.db, go, 1)

    def test_contains_eager_chaining_aliased_endpoint(self):
        """test that contains_eager() 'chains' by default and supports
        an alias at the end."""

        Dingaling, User, Address = (
            self.classes.Dingaling,
            self.classes.User,
            self.classes.Address,
        )

        sess = fixture_session()
        da = aliased(Dingaling, name="foob")
        q = (
            sess.query(User)
            .join(User.addresses)
            .join(da, Address.dingaling)
            .options(
                contains_eager(User.addresses, Address.dingaling, alias=da)
            )
        )

        def go():
            eq_(
                q.all(),
                # note we only load the Address records that
                # have a Dingaling here due to using the inner
                # join for the eager load
                [
                    User(
                        name="ed",
                        addresses=[
                            Address(
                                email_address="ed@wood.com",
                                dingaling=Dingaling(data="ding 1/2"),
                            )
                        ],
                    ),
                    User(
                        name="fred",
                        addresses=[
                            Address(
                                email_address="fred@fred.com",
                                dingaling=Dingaling(data="ding 2/5"),
                            )
                        ],
                    ),
                ],
            )

        self.assert_sql_count(testing.db, go, 1)

    def test_mixed_eager_contains_with_limit(self):
        Order, User, Address = (
            self.classes.Order,
            self.classes.User,
            self.classes.Address,
        )

        sess = fixture_session()

        q = sess.query(User)

        def go():
            # outerjoin to User.orders, offset 1/limit 2 so we get user
            # 7 + second two orders. then joinedload the addresses.
            # User + Order columns go into the subquery, address left
            # outer joins to the subquery, joinedloader for User.orders
            # applies context.adapter to result rows.  This was
            # [ticket:1180].

            result = (
                q.outerjoin(User.orders)
                .options(
                    joinedload(User.addresses), contains_eager(User.orders)
                )
                .order_by(User.id, Order.id)
                .offset(1)
                .limit(2)
                .all()
            )
            eq_(
                result,
                [
                    User(
                        id=7,
                        addresses=[
                            Address(
                                email_address="jack@bean.com", user_id=7, id=1
                            )
                        ],
                        name="jack",
                        orders=[
                            Order(
                                address_id=1,
                                user_id=7,
                                description="order 3",
                                isopen=1,
                                id=3,
                            ),
                            Order(
                                address_id=None,
                                user_id=7,
                                description="order 5",
                                isopen=0,
                                id=5,
                            ),
                        ],
                    )
                ],
            )

        self.assert_sql_count(testing.db, go, 1)
        sess.expunge_all()

        def go():
            # same as above, except Order is aliased, so two adapters
            # are applied by the eager loader

            oalias = aliased(Order)
            result = (
                q.outerjoin(oalias, User.orders)
                .options(
                    joinedload(User.addresses),
                    contains_eager(User.orders, alias=oalias),
                )
                .order_by(User.id, oalias.id)
                .offset(1)
                .limit(2)
                .all()
            )
            eq_(
                result,
                [
                    User(
                        id=7,
                        addresses=[
                            Address(
                                email_address="jack@bean.com", user_id=7, id=1
                            )
                        ],
                        name="jack",
                        orders=[
                            Order(
                                address_id=1,
                                user_id=7,
                                description="order 3",
                                isopen=1,
                                id=3,
                            ),
                            Order(
                                address_id=None,
                                user_id=7,
                                description="order 5",
                                isopen=0,
                                id=5,
                            ),
                        ],
                    )
                ],
            )

        self.assert_sql_count(testing.db, go, 1)


class MixedEntitiesTest(QueryTest, AssertsCompiledSQL):
    __dialect__ = "default"

    def test_alias_naming(self):
        User = self.classes.User

        sess = fixture_session()

        ua = aliased(User, name="foobar")
        q = sess.query(ua)
        self.assert_compile(
            q,
            "SELECT foobar.id AS foobar_id, "
            "foobar.name AS foobar_name FROM users AS foobar",
        )

    def test_correlated_subquery(self):
        """test that a subquery constructed from ORM attributes doesn't leak
        out those entities to the outermost query."""

        Address, users, User = (
            self.classes.Address,
            self.tables.users,
            self.classes.User,
        )

        sess = fixture_session()

        subq = (
            select(func.count())
            .where(User.id == Address.user_id)
            .correlate(users)
            .label("count")
        )

        # we don't want Address to be outside of the subquery here
        eq_(
            list(sess.query(User, subq)[0:3]),
            [
                (User(id=7, name="jack"), 1),
                (User(id=8, name="ed"), 3),
                (User(id=9, name="fred"), 1),
            ],
        )

        # same thing without the correlate, as it should
        # not be needed
        subq = (
            select(func.count())
            .where(User.id == Address.user_id)
            .label("count")
        )

        # we don't want Address to be outside of the subquery here
        eq_(
            list(sess.query(User, subq)[0:3]),
            [
                (User(id=7, name="jack"), 1),
                (User(id=8, name="ed"), 3),
                (User(id=9, name="fred"), 1),
            ],
        )

    @testing.combinations((True,), (False,))
    def test_no_uniquing_cols_legacy(self, with_entities):
        """test #6924"""
        User = self.classes.User
        Address = self.classes.Address

        sess = fixture_session()

        if with_entities:
            q = (
                sess.query(User)
                .join(Address)
                .filter(Address.user_id == 8)
                .with_entities(User.id, User.name)
                .order_by(User.id)
            )
        else:
            q = (
                sess.query(User.id, User.name)
                .join(Address)
                .filter(Address.user_id == 8)
                .order_by(User.id)
            )

        is_(q._compile_state()._primary_entity, None)

        eq_(q.all(), [(8, "ed"), (8, "ed"), (8, "ed")])

    @testing.combinations((True,), (False,))
    def test_no_uniquing_cols(self, with_entities):
        """test #6924"""
        User = self.classes.User
        Address = self.classes.Address

        if with_entities:
            stmt = (
                select(User)
                .join(Address)
                .filter(Address.user_id == 8)
                .with_only_columns(User.id, User.name)
                .order_by(User.id)
            )
        else:
            stmt = (
                select(User.id, User.name)
                .join(Address)
                .filter(Address.user_id == 8)
                .order_by(User.id)
            )

        compile_state = ORMSelectCompileState._create_orm_context(
            stmt, toplevel=True, compiler=None
        )
        is_(compile_state._primary_entity, None)

    def test_column_queries_one(self):
        User = self.classes.User

        sess = fixture_session()

        eq_(
            sess.query(User.name).all(),
            [("jack",), ("ed",), ("fred",), ("chuck",)],
        )

    def test_column_queries_two(self):
        users, User = (
            self.tables.users,
            self.classes.User,
        )

        sess = fixture_session()
        sel = users.select().where(User.id.in_([7, 8])).alias()
        ua = aliased(User, sel)
        q = sess.query(ua.name)
        q2 = q.all()
        eq_(list(q2), [("jack",), ("ed",)])

    def test_column_queries_three(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        eq_(
            sess.query(User.name, Address.email_address)
            .filter(User.id == Address.user_id)
            .all(),
            [
                ("jack", "jack@bean.com"),
                ("ed", "ed@wood.com"),
                ("ed", "ed@bettyboop.com"),
                ("ed", "ed@lala.com"),
                ("fred", "fred@fred.com"),
            ],
        )

    def test_column_queries_four(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        eq_(
            sess.query(User.name, func.count(Address.email_address))
            .outerjoin(User.addresses)
            .group_by(User.id, User.name)
            .order_by(User.id)
            .all(),
            [("jack", 1), ("ed", 3), ("fred", 1), ("chuck", 0)],
        )

    def test_column_queries_five(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        eq_(
            sess.query(User, func.count(Address.email_address))
            .outerjoin(User.addresses)
            .group_by(User)
            .order_by(User.id)
            .all(),
            [
                (User(name="jack", id=7), 1),
                (User(name="ed", id=8), 3),
                (User(name="fred", id=9), 1),
                (User(name="chuck", id=10), 0),
            ],
        )

    def test_column_queries_six(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        eq_(
            sess.query(func.count(Address.email_address), User)
            .outerjoin(User.addresses)
            .group_by(User)
            .order_by(User.id)
            .all(),
            [
                (1, User(name="jack", id=7)),
                (3, User(name="ed", id=8)),
                (1, User(name="fred", id=9)),
                (0, User(name="chuck", id=10)),
            ],
        )

    def test_column_queries_seven(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        adalias = aliased(Address)
        eq_(
            sess.query(User, func.count(adalias.email_address))
            .outerjoin(User.addresses.of_type(adalias))
            .group_by(User)
            .order_by(User.id)
            .all(),
            [
                (User(name="jack", id=7), 1),
                (User(name="ed", id=8), 3),
                (User(name="fred", id=9), 1),
                (User(name="chuck", id=10), 0),
            ],
        )

    def test_column_queries_eight(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()
        adalias = aliased(Address)
        eq_(
            sess.query(func.count(adalias.email_address), User)
            .outerjoin(adalias, User.addresses)
            .group_by(User)
            .order_by(User.id)
            .all(),
            [
                (1, User(name="jack", id=7)),
                (3, User(name="ed", id=8)),
                (1, User(name="fred", id=9)),
                (0, User(name="chuck", id=10)),
            ],
        )

    def test_column_queries_nine(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()

        adalias = aliased(Address)

        subq = (
            sess.query(User, adalias.email_address, adalias.id)
            .outerjoin(adalias, User.addresses)
            .subquery()
        )
        ua = aliased(User, subq)
        aa = aliased(adalias, subq)

        q = sess.query(ua, aa.email_address).order_by(ua.id, aa.id)
        # select from aliasing + explicit aliasing
        eq_(
            q.all(),
            [
                (User(name="jack", id=7), "jack@bean.com"),
                (User(name="ed", id=8), "ed@wood.com"),
                (User(name="ed", id=8), "ed@bettyboop.com"),
                (User(name="ed", id=8), "ed@lala.com"),
                (User(name="fred", id=9), "fred@fred.com"),
                (User(name="chuck", id=10), None),
            ],
        )

    def test_column_queries_ten(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()

        # anon + select from aliasing
        aa = aliased(Address)

        subq = (
            sess.query(User)
            .join(aa, User.addresses)
            .filter(aa.email_address.like("%ed%"))
            .subquery()
        )
        ua = aliased(User, subq)

        eq_(
            sess.query(ua).all(),
            [User(name="ed", id=8), User(name="fred", id=9)],
        )

    def test_column_queries_eleven(self):
        Address, User = (
            self.classes.Address,
            self.classes.User,
        )

        sess = fixture_session()

        adalias = aliased(Address)

        q1 = (
            sess.query(User, adalias.email_address)
            .outerjoin(adalias, User.addresses)
            .options(joinedload(User.addresses))
            .order_by(User.id, adalias.id)
            .limit(10)
        )

        subq = (
            sess.query(User, adalias.email_address, adalias.id)
            .outerjoin(adalias, User.addresses)
            .subquery()
        )
        ua = aliased(User, subq)
        aa = aliased(adalias, subq)

        q2 = (
            sess.query(ua, aa.email_address)
            .options(joinedload(ua.addresses))
            .order_by(ua.id, aa.id)
            .limit(10)
        )

        for q in [q1, q2]:
            eq_(
                q.all(),
                [
                    (
                        User(
                            addresses=[
                                Address(
                                    user_id=7,
                                    email_address="jack@bean.com",
                                    id=1,
                                )
                            ],
                            name="jack",
                            id=7,
                        ),
                        "jack@bean.com",
                    ),
                    (
                        User(
                            addresses=[
                                Address(
                                    user_id=8,
                                    email_address="ed@wood.com",
                                    id=2,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@bettyboop.com",
                                    id=3,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@lala.com",
                                    id=4,
                                ),
                            ],
                            name="ed",
                            id=8,
                        ),
                        "ed@wood.com",
                    ),
                    (
                        User(
                            addresses=[
                                Address(
                                    user_id=8,
                                    email_address="ed@wood.com",
                                    id=2,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@bettyboop.com",
                                    id=3,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@lala.com",
                                    id=4,
                                ),
                            ],
                            name="ed",
                            id=8,
                        ),
                        "ed@bettyboop.com",
                    ),
                    (
                        User(
                            addresses=[
                                Address(
                                    user_id=8,
                                    email_address="ed@wood.com",
                                    id=2,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@bettyboop.com",
                                    id=3,
                                ),
                                Address(
                                    user_id=8,
                                    email_address="ed@lala.com",
                                    id=4,
                                ),
                            ],
                            name="ed",
                            id=8,
                        ),
                        "ed@lala.com",
                    ),
                    (
                        User(
                            addresses=[
                                Address(
                                    user_id=9,
                                    email_address="fred@fred.com",
                                    id=5,
                                )
                            ],
                            name="fred",
                            id=9,
                        ),
                        "fred@fred.com",
                    ),
                    (User(addresses=[], name="chuck", id=10), None),
                ],
            )

    def test_column_from_limited_joinedload(self):
        User = self.classes.User

        sess = fixture_session()

        def go():
            results = (
                sess.query(User)
                .limit(1)
                .options(joinedload(User.addresses))
                .add_columns(User.name)
                .all()
            )
            eq_(results, [(User(name="jack"), "jack")])

        self.assert_sql_count(testing.db, go, 1)

    def test_self_referential_from_self(self):
        Order = self.classes.Order

        sess = fixture_session()
        oalias = aliased(Order)

        q1 = (
            sess.query(Order, oalias)
            .filter(Order.user_id == oalias.user_id)
            .filter(Order.user_id == 7)
            .filter(Order.id > oalias.id)
            .order_by(Order.id, oalias.id)
        )

        subq = (
            sess.query(Order, oalias).filter(Order.id > oalias.id).subquery()
        )
        oa, oaa = aliased(Order, subq), aliased(oalias, subq)
        q2 = (
            sess.query(oa, oaa)
            .filter(oa.user_id == oaa.user_id)
            .filter(oa.user_id == 7)
            .order_by(oa.id, oaa.id)
        )

        # same thing, but reversed.
        subq = (
            sess.query(oalias, Order).filter(Order.id < oalias.id).subquery()
        )
        oa, oaa = aliased(Order, subq), aliased(oalias, subq)
        q3 = (
            sess.query(oaa, oa)
            .filter(oaa.user_id == oa.user_id)
            .filter(oaa.user_id == 7)
            .order_by(oaa.id, oa.id)
        )

        subq = (
            sess.query(Order, oalias)
            .filter(Order.user_id == oalias.user_id)
            .filter(Order.user_id == 7)
            .filter(Order.id > oalias.id)
            .subquery()
        )
        oa, oaa = aliased(Order, subq), aliased(oalias, subq)

        # here we go....two layers of aliasing (due to joinedload w/ limit)
        q4 = (
            sess.query(oa, oaa)
            .order_by(oa.id, oaa.id)
            .limit(10)
            .options(joinedload(oa.items))
        )

        # gratuitous four layers
        subq4 = subq
        for i in range(4):
            oa, oaa = aliased(Order, subq4), aliased(oaa, subq4)
            subq4 = sess.query(oa, oaa).subquery()
        oa, oaa = aliased(Order, subq4), aliased(oaa, subq4)
        q5 = (
            sess.query(oa, oaa)
            .order_by(oa.id, oaa.id)
            .limit(10)
            .options(joinedload(oa.items))
        )
        for q in [
            q1,
            q2,
            q3,
            q4,
            q5,
        ]:
            eq_(
                q.all(),
                [
                    (
                        Order(
                            address_id=1,
                            description="order 3",
                            isopen=1,
                            user_id=7,
                            id=3,
                        ),
                        Order(
                            address_id=1,
                            description="order 1",
                            isopen=0,
                            user_id=7,
                            id=1,
                        ),
                    ),
                    (
                        Order(
                            address_id=None,
                            description="order 5",
                            isopen=0,
                            user_id=7,
                            id=5,
                        ),
                        Order(
                            address_id=1,
                            description="order 1",
                            isopen=0,
                            user_id=7,
                            id=1,
                        ),
                    ),
                    (
                        Order(
                            address_id=None,
                            description="order 5",
                            isopen=0,
                            user_id=7,
                            id=5,
                        ),
                        Order(
                            address_id=1,
                            description="order 3",
                            isopen=1,
                            user_id=7,
                            id=3,
                        ),
                    ),
                ],
            )

    def test_from_self_internal_literals_newstyle(self):
        Order = self.classes.Order

        stmt = select(
            Order.id, Order.description, literal_column("'q'").label("foo")
        ).where(Order.description == "order 3")

        subq = aliased(
            Order,
            stmt.set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL).subquery(),
        )

        stmt = select(subq).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL)
        self.assert_compile(
            stmt,
            "SELECT anon_1.orders_id AS "
            "anon_1_orders_id, "
            "anon_1.orders_description AS anon_1_orders_description "
            "FROM (SELECT "
            "orders.id AS orders_id, "
            "orders.description AS orders_description, "
            "'q' AS foo FROM orders WHERE "
            "orders.description = :description_1) AS "
            "anon_1",
        )

    def test_multi_mappers(self):
        Address, addresses, users, User = (
            self.classes.Address,
            self.tables.addresses,
            self.tables.users,
            self.classes.User,
        )

        test_session = fixture_session()

        (user7, user8, user9, user10) = test_session.query(User).all()
        (
            address1,
            address2,
            address3,
            address4,
            address5,
        ) = test_session.query(Address).all()

        expected = [
            (user7, address1),
            (user8, address2),
            (user8, address3),
            (user8, address4),
            (user9, address5),
            (user10, None),
        ]

        sess = fixture_session(future=True)

        selectquery = (
            users.outerjoin(addresses)
            .select()
            .order_by(users.c.id, addresses.c.id)
        )

        result = sess.execute(
            select(User, Address).from_statement(selectquery)
        )
        eq_(
            list(result),
            expected,
        )
        sess.expunge_all()

        for address_entity in (Address, aliased(Address)):
            q = (
                sess.query(User)
                .add_entity(address_entity)
                .outerjoin(address_entity, User.addresses)
                .order_by(User.id, address_entity.id)
            )
            eq_(q.all(), expected)
            sess.expunge_all()

            q = sess.query(User).add_entity(address_entity)
            q = q.join(address_entity, User.addresses)
            q = q.filter_by(email_address="ed@bettyboop.com")
            eq_(q.all(), [(user8, address3)])
            sess.expunge_all()

            q = (
                sess.query(User, address_entity)
                .join(address_entity, User.addresses)
                .filter_by(email_address="ed@bettyboop.com")
            )
            eq_(q.all(), [(user8, address3)])
            sess.expunge_all()

            q = (
                sess.query(User, address_entity)
                .join(address_entity, User.addresses)
                .options(joinedload(User.addresses))
                .filter_by(email_address="ed@bettyboop.com")
            )
            eq_(list(util.OrderedSet(q.all())), [(user8, address3)])
            sess.expunge_all()

    def test_aliased_multi_mappers(self):
        User, addresses, users, Address = (
            self.classes.User,
            self.tables.addresses,
            self.tables.users,
            self.classes.Address,
        )

        sess = fixture_session()

        (user7, user8, user9, user10) = sess.query(User).all()
        (address1, address2, address3, address4, address5) = sess.query(
            Address
        ).all()

        expected = [
            (user7, address1),
            (user8, address2),
            (user8, address3),
            (user8, address4),
            (user9, address5),
            (user10, None),
        ]

        adalias = addresses.alias("adalias")
        uaj = users.outerjoin(adalias)
        ua = aliased(User, uaj)
        q = sess.query(ua)
        q = q.add_entity(Address, alias=adalias)
        result = q.order_by(User.id, adalias.c.id).all()
        assert result == expected

        sess.expunge_all()

        q = sess.query(ua).add_entity(Address, alias=adalias)
        result = q.filter(adalias.c.email_address == "ed@bettyboop.com").all()
        assert result == [(user8, address3)]

    def test_with_entities(self):
        User, Address = self.classes.User, self.classes.Address

        sess = fixture_session()

        q = sess.query(User).filter(User.id == 7).order_by(User.name)

        self.assert_compile(
            q.with_entities(User.id, Address).filter(
                Address.user_id == User.id
            ),
            "SELECT users.id AS users_id, addresses.id "
            "AS addresses_id, addresses.user_id AS "
            "addresses_user_id, addresses.email_address"
            " AS addresses_email_address FROM users, "
            "addresses WHERE users.id = :id_1 AND "
            "addresses.user_id = users.id ORDER BY "
            "users.name",
        )

    def test_multi_columns(self):
        users, User = self.tables.users, self.classes.User

        sess = fixture_session()

        expected = [(u, u.name) for u in sess.query(User).all()]

        for add_col in (User.name, users.c.name):
            assert sess.query(User).add_columns(add_col).all() == expected
            sess.expunge_all()

        assert_raises(
            sa_exc.ArgumentError, sess.query(User).add_columns, object()
        )

    def test_add_multi_columns(self):
        """test that add_column accepts a FROM clause."""

        users, User = self.tables.users, self.classes.User

        sess = fixture_session()

        eq_(
            sess.query(User.id).add_columns(users).all(),
            [(7, 7, "jack"), (8, 8, "ed"), (9, 9, "fred"), (10, 10, "chuck")],
        )

    def test_multi_columns_2(self):
        """test aliased/nonalised joins with the usage of add_columns()"""

        User, Address, addresses, users = (
            self.classes.User,
            self.classes.Address,
            self.tables.addresses,
            self.tables.users,
        )

        sess = fixture_session()

        (user7, user8, user9, user10) = sess.query(User).all()
        expected = [(user7, 1), (user8, 3), (user9, 1), (user10, 0)]

        q = sess.query(User)
        q = (
            q.group_by(users)
            .order_by(User.id)
            .outerjoin(User.addresses)
            .add_columns(func.count(Address.id).label("count"))
        )
        eq_(q.all(), expected)
        sess.expunge_all()

        adalias = aliased(Address)
        q = sess.query(User)
        q = (
            q.group_by(users)
            .order_by(User.id)
            .outerjoin(User.addresses.of_type(adalias))
            .add_columns(func.count(adalias.id).label("count"))
        )
        eq_(q.all(), expected)
        sess.expunge_all()

        # TODO: figure out why group_by(users) doesn't work here
        count = func.count(addresses.c.id).label("count")
        s = (
            select(users, count)
            .select_from(users.outerjoin(addresses))
            .group_by(*[c for c in users.c])
            .order_by(User.id)
        )
        q = sess.query(User)
        result = (
            q.add_columns(s.selected_columns.count).from_statement(s).all()
        )
        assert result == expected

    def test_multi_columns_3(self):
        User = self.classes.User
        users = self.tables.users

        sess = fixture_session()

        q = sess.query(User.id, User.name)
        stmt = select(users).order_by(users.c.id)
        q = q.from_statement(stmt)

        eq_(q.all(), [(7, "jack"), (8, "ed"), (9, "fred"), (10, "chuck")])

    def test_raw_columns(self):
        addresses, users, User = (
            self.tables.addresses,
            self.tables.users,
            self.classes.User,
        )

        sess = fixture_session()
        (user7, user8, user9, user10) = sess.query(User).all()
        expected = [
            (user7, 1, "Name:jack"),
            (user8, 3, "Name:ed"),
            (user9, 1, "Name:fred"),
            (user10, 0, "Name:chuck"),
        ]

        adalias = addresses.alias()

        with fixture_session() as sess:
            q = (
                sess.query(User)
                .add_columns(
                    func.count(adalias.c.id), ("Name:" + users.c.name)
                )
                .outerjoin(adalias)
                .group_by(users)
                .order_by(users.c.id)
            )

            eq_(q.all(), expected)

        # test with a straight statement
        s = (
            select(
                users,
                func.count(addresses.c.id).label("count"),
                ("Name:" + users.c.name).label("concat"),
            )
            .select_from(users.outerjoin(addresses))
            .group_by(*[c for c in users.c])
            .order_by(users.c.id)
        )

        with fixture_session() as sess:
            q = sess.query(User)
            result = (
                q.add_columns(
                    s.selected_columns.count, s.selected_columns.concat
                )
                .from_statement(s)
                .all()
            )
            eq_(result, expected)

        with fixture_session() as sess:
            uaj = users.outerjoin(addresses)
            ua = aliased(User, uaj)
            q = (
                fixture_session()
                .query(ua)
                .add_columns(
                    func.count(addresses.c.id), ("Name:" + users.c.name)
                )
                .group_by(users)
                .order_by(users.c.id)
            )

            eq_(q.all(), expected)

        with fixture_session() as sess:
            q = (
                sess.query(User)
                .add_columns(
                    func.count(addresses.c.id), ("Name:" + users.c.name)
                )
                .outerjoin(User.addresses)
                .group_by(users)
                .order_by(users.c.id)
            )
            eq_(q.all(), expected)

        with fixture_session() as sess:
            q = (
                sess.query(User)
                .add_columns(
                    func.count(adalias.c.id), ("Name:" + users.c.name)
                )
                .outerjoin(adalias)
                .group_by(users)
                .order_by(users.c.id)
            )

            eq_(q.all(), expected)

    def test_unrelated_column(self):
        """Test for #9217"""

        User = self.classes.User

        q = select(User.id, func.lower("SANDY").label("name")).where(
            User.id == 7
        )

        s = select(User).from_statement(q)
        sess = fixture_session()
        res = sess.scalars(s).one()
        in_("name", res.__dict__)
        eq_(res, User(name="sandy", id=7))

    def test_unrelated_column_col_prop(self, decl_base):
        """Test for #9217 combined with #9273"""

        class User(ComparableEntity, decl_base):
            __tablename__ = "some_user_table"

            id: Mapped[int] = mapped_column(primary_key=True)

            name: Mapped[str] = mapped_column()
            age: Mapped[int] = mapped_column()

            is_adult: Mapped[bool] = column_property(age >= 18)

        stmt = select(
            literal(1).label("id"),
            literal("John").label("name"),
            literal(30).label("age"),
        )

        s = select(User).from_statement(stmt)
        sess = fixture_session()
        res = sess.scalars(s).one()

        eq_(res, User(name="John", age=30, id=1))

    def test_expression_selectable_matches_mzero(self):
        User, Address = self.classes.User, self.classes.Address

        ua = aliased(User)
        aa = aliased(Address)
        s = fixture_session()
        for crit, j, exp in [
            (
                User.id + Address.id,
                (User.addresses,),
                "SELECT users.id + addresses.id AS anon_1 "
                "FROM users JOIN addresses ON users.id = "
                "addresses.user_id",
            ),
            (
                User.id + Address.id,
                (Address.user,),
                "SELECT users.id + addresses.id AS anon_1 "
                "FROM addresses JOIN users ON users.id = "
                "addresses.user_id",
            ),
            (
                Address.id + User.id,
                (User.addresses,),
                "SELECT addresses.id + users.id AS anon_1 "
                "FROM users JOIN addresses ON users.id = "
                "addresses.user_id",
            ),
            (
                User.id + aa.id,
                (aa, User.addresses),
                "SELECT users.id + addresses_1.id AS anon_1 "
                "FROM users JOIN addresses AS addresses_1 "
                "ON users.id = addresses_1.user_id",
            ),
        ]:
            q = s.query(crit)
            mzero = q._compile_state()._entity_zero()
            is_(mzero, q._compile_state()._entities[0].entity_zero)
            q = q.join(*j)
            self.assert_compile(q, exp)

        for crit, j, exp in [
            (
                ua.id + Address.id,
                (ua.addresses,),
                "SELECT users_1.id + addresses.id AS anon_1 "
                "FROM users AS users_1 JOIN addresses "
                "ON users_1.id = addresses.user_id",
            ),
            (
                ua.id + aa.id,
                (aa, ua.addresses),
                "SELECT users_1.id + addresses_1.id AS anon_1 "
                "FROM users AS users_1 JOIN addresses AS "
                "addresses_1 ON users_1.id = addresses_1.user_id",
            ),
            (
                ua.id + aa.id,
                (ua, aa.user),
                "SELECT users_1.id + addresses_1.id AS anon_1 "
                "FROM addresses AS addresses_1 JOIN "
                "users AS users_1 "
                "ON users_1.id = addresses_1.user_id",
            ),
        ]:
            q = s.query(crit)
            mzero = q._compile_state()._entity_zero()
            is_(mzero, q._compile_state()._entities[0].entity_zero)
            q = q.join(*j)
            self.assert_compile(q, exp)

    def test_aliased_adapt_on_names(self):
        User, Address = self.classes.User, self.classes.Address

        sess = fixture_session()
        agg_address = sess.query(
            Address.id,
            func.sum(func.length(Address.email_address)).label(
                "email_address"
            ),
        ).group_by(Address.user_id)

        ag1 = aliased(Address, agg_address.subquery())
        ag2 = aliased(Address, agg_address.subquery(), adapt_on_names=True)

        # first, without adapt on names, 'email_address' isn't matched up - we
        # get the raw "address" element in the SELECT
        self.assert_compile(
            sess.query(User, ag1.email_address)
            .join(ag1, User.addresses)
            .filter(ag1.email_address > 5),
            "SELECT users.id "
            "AS users_id, users.name AS users_name, addresses.email_address "
            "AS addresses_email_address FROM users JOIN "
            "(SELECT addresses.id AS id, sum(length(addresses.email_address)) "
            "AS email_address FROM addresses GROUP BY addresses.user_id) AS "
            "anon_1 ON users.id = addresses.user_id, addresses "
            "WHERE addresses.email_address > :email_address_1",
        )

        # second, 'email_address' matches up to the aggregate, and we get a
        # smooth JOIN from users->subquery and that's it
        self.assert_compile(
            sess.query(User, ag2.email_address)
            .join(ag2, User.addresses)
            .filter(ag2.email_address > 5),
            "SELECT users.id AS users_id, users.name AS users_name, "
            "anon_1.email_address AS anon_1_email_address FROM users "
            "JOIN ("
            "SELECT addresses.id AS id, sum(length(addresses.email_address)) "
            "AS email_address FROM addresses GROUP BY addresses.user_id) AS "
            "anon_1 ON users.id = addresses.user_id "
            "WHERE anon_1.email_address > :email_address_1",
        )


class SelectFromTest(QueryTest, AssertsCompiledSQL):
    run_setup_mappers = None
    __dialect__ = "default"

    def test_replace_with_select(self):
        users, Address, addresses, User = (
            self.tables.users,
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper_registry.map_imperatively(
            User, users, properties={"addresses": relationship(Address)}
        )
        self.mapper_registry.map_imperatively(Address, addresses)

        sel = users.select().where(users.c.id.in_([7, 8])).alias()
        sess = fixture_session()

        ua = aliased(User, sel)
        eq_(
            sess.query(ua).all(),
            [User(id=7), User(id=8)],
        )

        eq_(
            sess.query(ua).filter(ua.id == 8).all(),
            [User(id=8)],
        )

        eq_(
            sess.query(ua).order_by(desc(ua.name)).all(),
            [User(name="jack", id=7), User(name="ed", id=8)],
        )

        eq_(
            sess.query(ua).order_by(asc(ua.name)).all(),
            [User(name="ed", id=8), User(name="jack", id=7)],
        )

        eq_(
            sess.query(ua).options(joinedload(ua.addresses)).first(),
            User(name="jack", addresses=[Address(id=1)]),
        )

    def test_select_from_aliased_one(self):
        User, users = self.classes.User, self.tables.users

        self.mapper_registry.map_imperatively(User, users)

        sess = fixture_session()

        not_users = table("users", column("id"), column("name"))
        ua = aliased(User, select(not_users).alias(), adapt_on_names=True)

        q = sess.query(ua.name).order_by(ua.name)
        self.assert_compile(
            q,
            "SELECT anon_1.name AS anon_1_name FROM (SELECT users.id AS id, "
            "users.name AS name FROM users) AS anon_1 ORDER BY anon_1.name",
        )
        eq_(q.all(), [("chuck",), ("ed",), ("fred",), ("jack",)])

    def test_select_from_aliased_two(self):
        User, users = self.classes.User, self.tables.users

        self.mapper_registry.map_imperatively(User, users)

        sess = fixture_session()

        ua = aliased(User)

        q = sess.query(ua.name).order_by(ua.name)
        self.assert_compile(
            q,
            "SELECT users_1.name AS users_1_name FROM users AS users_1 "
            "ORDER BY users_1.name",
        )
        eq_(q.all(), [("chuck",), ("ed",), ("fred",), ("jack",)])

    def test_differentiate_self_external(self):
        """test some different combinations of joining a table to a subquery of
        itself."""

        users, User = self.tables.users, self.classes.User

        self.mapper_registry.map_imperatively(User, users)

        sess = fixture_session()

        sel = sess.query(User).filter(User.id.in_([7, 8])).subquery()
        ualias = aliased(User)

        ua = aliased(User, sel)

        self.assert_compile(
            sess.query(User).join(sel, User.id > sel.c.id),
            "SELECT users.id AS users_id, users.name AS users_name FROM "
            "users JOIN (SELECT users.id AS id, users.name AS name FROM users "
            "WHERE users.id IN (__[POSTCOMPILE_id_1])) "
            "AS anon_1 ON users.id > anon_1.id",
        )

        self.assert_compile(
            sess.query(ualias).select_from(ua).filter(ualias.id > ua.id),
            "SELECT users_1.id AS users_1_id, users_1.name AS users_1_name "
            "FROM ("
            "SELECT users.id AS id, users.name AS name FROM users "
            "WHERE users.id IN (__[POSTCOMPILE_id_1])) AS anon_1, "
            "users AS users_1 "
            "WHERE users_1.id > anon_1.id",
            check_post_param={"id_1": [7, 8]},
        )

        self.assert_compile(
            sess.query(ualias).select_from(ua).join(ualias, ualias.id > ua.id),
            "SELECT users_1.id AS users_1_id, users_1.name AS users_1_name "
            "FROM (SELECT users.id AS id, users.name AS name "
            "FROM users WHERE users.id IN (__[POSTCOMPILE_id_1])) AS anon_1 "
            "JOIN users AS users_1 ON users_1.id > anon_1.id",
            check_post_param={"id_1": [7, 8]},
        )

        self.assert_compile(
            sess.query(ualias).select_from(ua).join(ualias, ualias.id > ua.id),
            "SELECT users_1.id AS users_1_id, users_1.name AS users_1_name "
            "FROM (SELECT users.id AS id, users.name AS name FROM "
            "users WHERE users.id IN (__[POSTCOMPILE_id_1])) AS anon_1 "
            "JOIN users AS users_1 ON users_1.id > anon_1.id",
            check_post_param={"id_1": [7, 8]},
        )

        salias = aliased(User, sel)
        self.assert_compile(
            sess.query(salias).join(ualias, ualias.id > salias.id),
            "SELECT anon_1.id AS anon_1_id, anon_1.name AS anon_1_name FROM "
            "(SELECT users.id AS id, users.name AS name "
            "FROM users WHERE users.id IN (__[POSTCOMPILE_id_1])) AS anon_1 "
            "JOIN users AS users_1 ON users_1.id > anon_1.id",
            check_post_param={"id_1": [7, 8]},
        )

    def test_aliased_class_vs_nonaliased(self):
        User, users = self.classes.User, self.tables.users
        self.mapper_registry.map_imperatively(User, users)

        ua = aliased(User)

        sess = fixture_session()
        self.assert_compile(
            sess.query(User).select_from(ua).join(User, ua.name > User.name),
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM users AS users_1 JOIN users ON users_1.name > users.name",
        )

        self.assert_compile(
            sess.query(User.name)
            .select_from(ua)
            .join(User, ua.name > User.name),
            "SELECT users.name AS users_name FROM users AS users_1 "
            "JOIN users ON users_1.name > users.name",
        )

        self.assert_compile(
            sess.query(ua.name)
            .select_from(ua)
            .join(User, ua.name > User.name),
            "SELECT users_1.name AS users_1_name FROM users AS users_1 "
            "JOIN users ON users_1.name > users.name",
        )

        self.assert_compile(
            sess.query(ua).select_from(User).join(ua, ua.name > User.name),
            "SELECT users_1.id AS users_1_id, users_1.name AS users_1_name "
            "FROM users JOIN users AS users_1 ON users_1.name > users.name",
        )

        self.assert_compile(
            sess.query(ua).select_from(User).join(ua, User.name > ua.name),
            "SELECT users_1.id AS users_1_id, users_1.name AS users_1_name "
            "FROM users JOIN users AS users_1 ON users.name > users_1.name",
        )

    def test_join_relname_from_selected_from(self):
        User, Address = self.classes.User, self.classes.Address
        users, addresses = self.tables.users, self.tables.addresses
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(
                    self.mapper_registry.map_imperatively(Address, addresses),
                    backref="user",
                )
            },
        )

        sess = fixture_session()

        self.assert_compile(
            sess.query(User).select_from(Address).join(Address.user),
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM addresses JOIN users ON users.id = addresses.user_id",
        )

    def test_filter_by_selected_from(self):
        User, Address = self.classes.User, self.classes.Address
        users, addresses = self.tables.users, self.tables.addresses
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(
                    self.mapper_registry.map_imperatively(Address, addresses)
                )
            },
        )

        sess = fixture_session()

        self.assert_compile(
            sess.query(User)
            .select_from(Address)
            .filter_by(email_address="ed")
            .join(User),
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM addresses JOIN users ON users.id = addresses.user_id "
            "WHERE addresses.email_address = :email_address_1",
        )

    def test_join_ent_selected_from(self):
        User, Address = self.classes.User, self.classes.Address
        users, addresses = self.tables.users, self.tables.addresses
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(
                    self.mapper_registry.map_imperatively(Address, addresses)
                )
            },
        )

        sess = fixture_session()

        self.assert_compile(
            sess.query(User).select_from(Address).join(User),
            "SELECT users.id AS users_id, users.name AS users_name "
            "FROM addresses JOIN users ON users.id = addresses.user_id",
        )

    def test_join(self):
        users, Address, addresses, User = (
            self.tables.users,
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper_registry.map_imperatively(
            User, users, properties={"addresses": relationship(Address)}
        )
        self.mapper_registry.map_imperatively(Address, addresses)

        sel = users.select().where(users.c.id.in_([7, 8]))
        sess = fixture_session()

        ua = aliased(User, sel.subquery())
        eq_(
            sess.query(ua)
            .join(ua.addresses)
            .add_entity(Address)
            .order_by(ua.id)
            .order_by(Address.id)
            .all(),
            [
                (
                    User(name="jack", id=7),
                    Address(user_id=7, email_address="jack@bean.com", id=1),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@wood.com", id=2),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@bettyboop.com", id=3),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@lala.com", id=4),
                ),
            ],
        )

        adalias = aliased(Address)
        ua = aliased(User, sel.subquery())
        eq_(
            sess.query(ua)
            .join(ua.addresses.of_type(adalias))
            .add_entity(adalias)
            .order_by(ua.id)
            .order_by(adalias.id)
            .all(),
            [
                (
                    User(name="jack", id=7),
                    Address(user_id=7, email_address="jack@bean.com", id=1),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@wood.com", id=2),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@bettyboop.com", id=3),
                ),
                (
                    User(name="ed", id=8),
                    Address(user_id=8, email_address="ed@lala.com", id=4),
                ),
            ],
        )

    def test_more_joins(self):
        (
            users,
            Keyword,
            orders,
            items,
            order_items,
            Order,
            Item,
            User,
            keywords,
            item_keywords,
        ) = (
            self.tables.users,
            self.classes.Keyword,
            self.tables.orders,
            self.tables.items,
            self.tables.order_items,
            self.classes.Order,
            self.classes.Item,
            self.classes.User,
            self.tables.keywords,
            self.tables.item_keywords,
        )

        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={"orders": relationship(Order, backref="user")},
        )  # o2m, m2o
        self.mapper_registry.map_imperatively(
            Order,
            orders,
            properties={
                "items": relationship(
                    Item, secondary=order_items, order_by=items.c.id
                )
            },
        )  # m2m

        self.mapper_registry.map_imperatively(
            Item,
            items,
            properties={
                "keywords": relationship(
                    Keyword, secondary=item_keywords, order_by=keywords.c.id
                )
            },
        )  # m2m
        self.mapper_registry.map_imperatively(Keyword, keywords)

        sess = fixture_session()
        sel = users.select().where(users.c.id.in_([7, 8]))

        ua = aliased(User, sel.subquery())
        eq_(
            sess.query(ua)
            .join(ua.orders)
            .join(Order.items)
            .join(Item.keywords)
            .filter(Keyword.name.in_(["red", "big", "round"]))
            .all(),
            [User(name="jack", id=7)],
        )

    def test_very_nested_joins_with_joinedload(self):
        (
            users,
            Keyword,
            orders,
            items,
            order_items,
            Order,
            Item,
            User,
            keywords,
            item_keywords,
        ) = (
            self.tables.users,
            self.classes.Keyword,
            self.tables.orders,
            self.tables.items,
            self.tables.order_items,
            self.classes.Order,
            self.classes.Item,
            self.classes.User,
            self.tables.keywords,
            self.tables.item_keywords,
        )

        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={"orders": relationship(Order, backref="user")},
        )  # o2m, m2o
        self.mapper_registry.map_imperatively(
            Order,
            orders,
            properties={
                "items": relationship(
                    Item, secondary=order_items, order_by=items.c.id
                )
            },
        )  # m2m
        self.mapper_registry.map_imperatively(
            Item,
            items,
            properties={
                "keywords": relationship(
                    Keyword, secondary=item_keywords, order_by=keywords.c.id
                )
            },
        )  # m2m
        self.mapper_registry.map_imperatively(Keyword, keywords)

        sess = fixture_session()

        sel = users.select().where(users.c.id.in_([7, 8]))
        ua = aliased(User, sel.subquery())

        def go():
            eq_(
                sess.query(ua)
                .options(
                    joinedload(ua.orders)
                    .joinedload(Order.items)
                    .joinedload(Item.keywords)
                )
                .join(ua.orders)
                .join(Order.items)
                .join(Item.keywords)
                .filter(Keyword.name.in_(["red", "big", "round"]))
                .all(),
                [
                    User(
                        name="jack",
                        orders=[
                            Order(
                                description="order 1",
                                items=[
                                    Item(
                                        description="item 1",
                                        keywords=[
                                            Keyword(name="red"),
                                            Keyword(name="big"),
                                            Keyword(name="round"),
                                        ],
                                    ),
                                    Item(
                                        description="item 2",
                                        keywords=[
                                            Keyword(name="red", id=2),
                                            Keyword(name="small", id=5),
                                            Keyword(name="square"),
                                        ],
                                    ),
                                    Item(
                                        description="item 3",
                                        keywords=[
                                            Keyword(name="green", id=3),
                                            Keyword(name="big", id=4),
                                            Keyword(name="round", id=6),
                                        ],
                                    ),
                                ],
                            ),
                            Order(
                                description="order 3",
                                items=[
                                    Item(
                                        description="item 3",
                                        keywords=[
                                            Keyword(name="green", id=3),
                                            Keyword(name="big", id=4),
                                            Keyword(name="round", id=6),
                                        ],
                                    ),
                                    Item(
                                        description="item 4", keywords=[], id=4
                                    ),
                                    Item(
                                        description="item 5", keywords=[], id=5
                                    ),
                                ],
                            ),
                            Order(
                                description="order 5",
                                items=[
                                    Item(description="item 5", keywords=[])
                                ],
                            ),
                        ],
                    )
                ],
            )

        self.assert_sql_count(testing.db, go, 1)

        sess.expunge_all()
        sel2 = orders.select().where(orders.c.id.in_([1, 2, 3]))
        oa = aliased(Order, sel2.subquery())
        eq_(
            sess.query(oa)
            .join(oa.items)
            .join(Item.keywords)
            .filter(Keyword.name == "red")
            .order_by(oa.id)
            .all(),
            [
                Order(description="order 1", id=1),
                Order(description="order 2", id=2),
            ],
        )

    def test_replace_with_eager(self):
        users, Address, addresses, User = (
            self.tables.users,
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(Address, order_by=addresses.c.id)
            },
        )
        self.mapper_registry.map_imperatively(Address, addresses)

        sel = users.select().where(users.c.id.in_([7, 8]))
        sess = fixture_session()

        ua = aliased(User, sel.subquery())

        def go():
            eq_(
                sess.query(ua)
                .options(joinedload(ua.addresses))
                .order_by(ua.id)
                .all(),
                [
                    User(id=7, addresses=[Address(id=1)]),
                    User(
                        id=8,
                        addresses=[
                            Address(id=2),
                            Address(id=3),
                            Address(id=4),
                        ],
                    ),
                ],
            )

        self.assert_sql_count(testing.db, go, 1)
        sess.expunge_all()

        def go():
            eq_(
                sess.query(ua)
                .options(joinedload(ua.addresses))
                .filter(ua.id == 8)
                .order_by(ua.id)
                .all(),
                [
                    User(
                        id=8,
                        addresses=[
                            Address(id=2),
                            Address(id=3),
                            Address(id=4),
                        ],
                    )
                ],
            )

        self.assert_sql_count(testing.db, go, 1)
        sess.expunge_all()

        def go():
            eq_(
                sess.query(ua)
                .options(joinedload(ua.addresses))
                .order_by(ua.id)
                .offset(1)
                .limit(1)
                .scalar(),
                User(
                    id=8,
                    addresses=[Address(id=2), Address(id=3), Address(id=4)],
                ),
            )

        self.assert_sql_count(testing.db, go, 1)


class CustomJoinTest(QueryTest):
    run_setup_mappers = None

    def test_double_same_mappers_explicit_alias(self):
        """test aliasing of joins with a custom join condition"""

        (
            addresses,
            items,
            order_items,
            orders,
            Item,
            User,
            Address,
            Order,
            users,
        ) = (
            self.tables.addresses,
            self.tables.items,
            self.tables.order_items,
            self.tables.orders,
            self.classes.Item,
            self.classes.User,
            self.classes.Address,
            self.classes.Order,
            self.tables.users,
        )

        self.mapper_registry.map_imperatively(Address, addresses)
        self.mapper_registry.map_imperatively(
            Order,
            orders,
            properties={
                "items": relationship(
                    Item,
                    secondary=order_items,
                    lazy="select",
                    order_by=items.c.id,
                )
            },
        )
        self.mapper_registry.map_imperatively(Item, items)
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties=dict(
                addresses=relationship(Address, lazy="select"),
                open_orders=relationship(
                    Order,
                    primaryjoin=and_(
                        orders.c.isopen == 1, users.c.id == orders.c.user_id
                    ),
                    lazy="select",
                    viewonly=True,
                ),
                closed_orders=relationship(
                    Order,
                    primaryjoin=and_(
                        orders.c.isopen == 0, users.c.id == orders.c.user_id
                    ),
                    lazy="select",
                    viewonly=True,
                ),
            ),
        )
        q = fixture_session().query(User)

        oo = aliased(Order)
        co = aliased(Order)
        oi = aliased(Item)
        ci = aliased(Item)

        # converted from aliased=True.  This is kind of the worst case
        # kind of query when we don't have aliased=True.  two different
        # styles are illustrated here, but the important point is that
        # the filter() is not doing any trickery, you need to pass it the
        # aliased entity explicitly.
        eq_(
            q.join(oo, User.open_orders)
            .join(oi, oo.items)
            .filter(oi.id == 4)
            .join(User.closed_orders.of_type(co))
            .join(co.items.of_type(ci))
            .filter(ci.id == 3)
            .all(),
            [User(id=7)],
        )


class ExternalColumnsTest(QueryTest):
    """test mappers with SQL-expressions added as column properties."""

    run_setup_mappers = None

    def test_external_columns_bad(self):
        users, User = self.tables.users, self.classes.User

        assert_raises_message(
            sa_exc.ArgumentError,
            "not represented in the mapper's table",
            self.mapper_registry.map_imperatively,
            User,
            users,
            properties={"concat": (users.c.id * 2)},
        )
        clear_mappers()

    def test_external_columns(self):
        """test querying mappings that reference external columns or
        selectables."""

        users, Address, addresses, User = (
            self.tables.users,
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "concat": column_property(users.c.id * 2),
                "count": column_property(
                    select(func.count(addresses.c.id))
                    .where(
                        users.c.id == addresses.c.user_id,
                    )
                    .correlate(users)
                    .scalar_subquery()
                ),
            },
        )

        self.mapper_registry.map_imperatively(
            Address,
            addresses,
            properties={
                "user": relationship(
                    User,
                )
            },
        )

        sess = fixture_session()

        sess.query(Address).options(joinedload(Address.user)).all()

        eq_(
            sess.query(User).all(),
            [
                User(id=7, concat=14, count=1),
                User(id=8, concat=16, count=3),
                User(id=9, concat=18, count=1),
                User(id=10, concat=20, count=0),
            ],
        )

        address_result = [
            Address(id=1, user=User(id=7, concat=14, count=1)),
            Address(id=2, user=User(id=8, concat=16, count=3)),
            Address(id=3, user=User(id=8, concat=16, count=3)),
            Address(id=4, user=User(id=8, concat=16, count=3)),
            Address(id=5, user=User(id=9, concat=18, count=1)),
        ]

        eq_(sess.query(Address).all(), address_result)

        # run the eager version twice to test caching of aliased clauses
        for x in range(2):
            sess.expunge_all()

            def go():
                eq_(
                    sess.query(Address)
                    .options(joinedload(Address.user))
                    .order_by(Address.id)
                    .all(),
                    address_result,
                )

            self.assert_sql_count(testing.db, go, 1)

        ualias = aliased(User)
        eq_(
            sess.query(Address, ualias).join(ualias, Address.user).all(),
            [(address, address.user) for address in address_result],
        )

        ualias2 = aliased(User)
        eq_(
            sess.query(Address, ualias.count)
            .join(ualias, Address.user)
            .join(ualias2, Address.user)
            .order_by(Address.id)
            .all(),
            [
                (Address(id=1), 1),
                (Address(id=2), 3),
                (Address(id=3), 3),
                (Address(id=4), 3),
                (Address(id=5), 1),
            ],
        )

        eq_(
            sess.query(Address, ualias.concat, ualias.count)
            .join(Address.user.of_type(ualias))
            .join(Address.user.of_type(ualias2))
            .order_by(Address.id)
            .all(),
            [
                (Address(id=1), 14, 1),
                (Address(id=2), 16, 3),
                (Address(id=3), 16, 3),
                (Address(id=4), 16, 3),
                (Address(id=5), 18, 1),
            ],
        )

        ua = aliased(User)
        eq_(
            sess.query(Address, ua.concat, ua.count)
            .join(Address.user.of_type(ua))
            .options(joinedload(Address.user))
            .order_by(Address.id)
            .all(),
            [
                (Address(id=1, user=User(id=7, concat=14, count=1)), 14, 1),
                (Address(id=2, user=User(id=8, concat=16, count=3)), 16, 3),
                (Address(id=3, user=User(id=8, concat=16, count=3)), 16, 3),
                (Address(id=4, user=User(id=8, concat=16, count=3)), 16, 3),
                (Address(id=5, user=User(id=9, concat=18, count=1)), 18, 1),
            ],
        )

        eq_(
            list(
                sess.query(Address)
                .join(Address.user)
                .with_entities(Address.id, User.id, User.concat, User.count)
            ),
            [
                (1, 7, 14, 1),
                (2, 8, 16, 3),
                (3, 8, 16, 3),
                (4, 8, 16, 3),
                (5, 9, 18, 1),
            ],
        )

        eq_(
            list(
                sess.query(Address, ua)
                .join(Address.user.of_type(ua))
                .with_entities(Address.id, ua.id, ua.concat, ua.count)
            ),
            [
                (1, 7, 14, 1),
                (2, 8, 16, 3),
                (3, 8, 16, 3),
                (4, 8, 16, 3),
                (5, 9, 18, 1),
            ],
        )

    def test_external_columns_joinedload(self):
        users, orders, User, Address, Order, addresses = (
            self.tables.users,
            self.tables.orders,
            self.classes.User,
            self.classes.Address,
            self.classes.Order,
            self.tables.addresses,
        )

        # in this test, we have a subquery on User that accesses "addresses",
        # underneath an joinedload for "addresses".  So the "addresses" alias
        # adapter needs to *not* hit the "addresses" table within the "user"
        # subquery, but "user" still needs to be adapted. therefore the long
        # standing practice of eager adapters being "chained" has been removed
        # since its unnecessary and breaks this exact condition.
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "addresses": relationship(
                    Address, backref="user", order_by=addresses.c.id
                ),
                "concat": column_property(users.c.id * 2),
                "count": column_property(
                    select(func.count(addresses.c.id))
                    .where(
                        users.c.id == addresses.c.user_id,
                    )
                    .correlate(users)
                    .scalar_subquery()
                ),
            },
        )
        self.mapper_registry.map_imperatively(Address, addresses)
        self.mapper_registry.map_imperatively(
            Order, orders, properties={"address": relationship(Address)}
        )  # m2o
        configure_mappers()

        sess = fixture_session()

        def go():
            o1 = sess.get(
                Order,
                1,
                options=[joinedload(Order.address).joinedload(Address.user)],
            )
            eq_(o1.address.user.count, 1)

        self.assert_sql_count(testing.db, go, 1)

        sess = fixture_session()

        def go():
            o1 = (
                sess.query(Order)
                .options(joinedload(Order.address).joinedload(Address.user))
                .first()
            )
            eq_(o1.address.user.count, 1)

        self.assert_sql_count(testing.db, go, 1)

    def test_external_columns_compound(self):
        # see [ticket:2167] for background
        users, Address, addresses, User = (
            self.tables.users,
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={"fullname": column_property(users.c.name.label("x"))},
        )

        self.mapper_registry.map_imperatively(
            Address,
            addresses,
            properties={
                "username": column_property(
                    select(User.fullname)
                    .where(User.id == addresses.c.user_id)
                    .label("y")
                )
            },
        )
        sess = fixture_session()
        a1 = sess.query(Address).first()
        eq_(a1.username, "jack")

        sess = fixture_session()
        subq = sess.query(Address).subquery()
        aa = aliased(Address, subq)
        a1 = sess.query(aa).first()
        eq_(a1.username, "jack")


class TestOverlyEagerEquivalentCols(fixtures.MappedTest):
    @classmethod
    def define_tables(cls, metadata):
        Table(
            "base",
            metadata,
            Column(
                "id", Integer, primary_key=True, test_needs_autoincrement=True
            ),
            Column("data", String(50)),
        )

        Table(
            "sub1",
            metadata,
            Column("id", Integer, ForeignKey("base.id"), primary_key=True),
            Column("data", String(50)),
        )

        Table(
            "sub2",
            metadata,
            Column(
                "id",
                Integer,
                ForeignKey("base.id"),
                ForeignKey("sub1.id"),
                primary_key=True,
            ),
            Column("data", String(50)),
        )

    def test_equivs(self):
        base, sub2, sub1 = (
            self.tables.base,
            self.tables.sub2,
            self.tables.sub1,
        )

        class Base(ComparableEntity):
            pass

        class Sub1(ComparableEntity):
            pass

        class Sub2(ComparableEntity):
            pass

        self.mapper_registry.map_imperatively(
            Base,
            base,
            properties={
                "sub1": relationship(Sub1),
                "sub2": relationship(Sub2),
            },
        )

        self.mapper_registry.map_imperatively(Sub1, sub1)
        self.mapper_registry.map_imperatively(Sub2, sub2)
        sess = fixture_session()

        s11 = Sub1(data="s11")
        s12 = Sub1(data="s12")
        b1 = Base(data="b1", sub1=[s11], sub2=[])
        b2 = Base(data="b1", sub1=[s12], sub2=[])
        sess.add(b1)
        sess.add(b2)
        sess.flush()


class LabelCollideTest(fixtures.MappedTest):
    """Test handling for a label collision.  This collision
    is handled by core, see ticket:2702 as well as
    test/sql/test_selectable->WithLabelsTest.  here we want
    to make sure the end result is as we expect.

    """

    @classmethod
    def define_tables(cls, metadata):
        Table(
            "foo",
            metadata,
            Column("id", Integer, primary_key=True),
            Column("bar_id", Integer),
        )
        Table("foo_bar", metadata, Column("id", Integer, primary_key=True))

    @classmethod
    def setup_classes(cls):
        class Foo(cls.Basic):
            pass

        class Bar(cls.Basic):
            pass

    @classmethod
    def setup_mappers(cls):
        cls.mapper_registry.map_imperatively(cls.classes.Foo, cls.tables.foo)
        cls.mapper_registry.map_imperatively(
            cls.classes.Bar, cls.tables.foo_bar
        )

    @classmethod
    def insert_data(cls, connection):
        s = Session(connection)
        s.add_all([cls.classes.Foo(id=1, bar_id=2), cls.classes.Bar(id=3)])
        s.commit()

    def test_overlap_plain(self):
        s = fixture_session()
        row = (
            s.query(self.classes.Foo, self.classes.Bar)
            .join(self.classes.Bar, true())
            .all()[0]
        )

        def go():
            eq_(row.Foo.id, 1)
            eq_(row.Foo.bar_id, 2)
            eq_(row.Bar.id, 3)

        # all three columns are loaded independently without
        # overlap, no additional SQL to load all attributes
        self.assert_sql_count(testing.db, go, 0)

    def test_overlap_subquery(self):
        s = fixture_session()

        subq = (
            s.query(self.classes.Foo, self.classes.Bar)
            .join(self.classes.Bar, true())
            .subquery()
        )

        fa = aliased(self.classes.Foo, subq, name="Foo")
        ba = aliased(self.classes.Bar, subq, name="Bar")

        row = s.query(fa, ba).all()[0]

        def go():
            eq_(row.Foo.id, 1)
            eq_(row.Foo.bar_id, 2)
            eq_(row.Bar.id, 3)

        # all three columns are loaded independently without
        # overlap, no additional SQL to load all attributes
        self.assert_sql_count(testing.db, go, 0)


class CorrelateORMTest(fixtures.TestBase, testing.AssertsCompiledSQL):
    __dialect__ = "default"

    @testing.fixture
    def mapping(self):
        Base = declarative_base()

        def go(include_property, correlate_style, include_from):
            class Address(Base):
                __tablename__ = "addresses"

                id = Column(Integer, primary_key=True)
                user_id = Column(
                    Integer, ForeignKey("users.id"), nullable=False
                )
                city = Column(Text)

            class User(Base):
                __tablename__ = "users"

                id = Column(Integer, primary_key=True)
                name = Column(Text)

            stmt = select(func.count(Address.id)).where(
                Address.user_id == User.id
            )
            if include_from:
                stmt = stmt.select_from(Address)

            if include_property:
                if correlate_style == "correlate":
                    User.total_addresses = column_property(
                        stmt.correlate(User).scalar_subquery()
                    )
                elif correlate_style == "correlate_except":
                    User.total_addresses = column_property(
                        stmt.correlate_except(Address).scalar_subquery()
                    )
                elif correlate_style is None:
                    User.total_addresses = column_property(
                        stmt.scalar_subquery()
                    )
                total_addresses = None
            else:

                def total_addresses(cls):
                    stmt = select(func.count(Address.id)).where(
                        Address.user_id == cls.id
                    )

                    if correlate_style == "correlate":
                        stmt = stmt.correlate(cls)
                    elif correlate_style == "correlate_except":
                        stmt = stmt.correlate_except(Address)

                    stmt = stmt.scalar_subquery()

                    return stmt

            return User, Address, total_addresses

        yield go
        Base.registry.dispose()

    def _combinations(fn):
        return testing.combinations(
            (True,), (False,), argnames="include_property"
        )(
            testing.combinations(
                ("correlate",),
                ("correlate_except",),
                (None,),
                argnames="correlate_style",
            )(
                testing.combinations(
                    (True,), (False), argnames="include_from"
                )(fn)
            )
        )

    @_combinations
    def test_correlate_to_cte_legacy(
        self, mapping, include_property, correlate_style, include_from
    ):
        User, Address, total_addresses = mapping(
            include_property, correlate_style, include_from
        )
        session = fixture_session()

        filtered_users = (
            session.query(User.id, User.name)
            .join(Address)
            .filter(Address.city == "somewhere")
            .cte("filtered_users")
        )

        filtered_users_alias = aliased(User, filtered_users)

        paginated_users = (
            session.query(filtered_users_alias.id, filtered_users_alias.name)
            .order_by(func.lower(filtered_users_alias.name).asc())
            .limit(25)
            .cte("paginated_users")
        )

        paginated_users_alias = aliased(User, paginated_users)

        if total_addresses:
            q = session.query(
                paginated_users_alias, total_addresses(paginated_users_alias)
            )
        else:
            q = session.query(paginated_users_alias)
        self.assert_compile(
            q,
            "WITH filtered_users AS "
            "(SELECT users.id AS id, users.name AS name "
            "FROM users JOIN addresses ON users.id = addresses.user_id "
            "WHERE addresses.city = :city_1), "
            "paginated_users AS (SELECT filtered_users.id AS id, "
            "filtered_users.name AS name FROM filtered_users "
            "ORDER BY lower(filtered_users.name) ASC LIMIT :param_1) "
            "SELECT "
            "paginated_users.id AS paginated_users_id, "
            "paginated_users.name AS paginated_users_name, "
            "(SELECT count(addresses.id) AS count_1 FROM addresses "
            "WHERE addresses.user_id = paginated_users.id) AS anon_1 "
            "FROM paginated_users",
        )
