PublicArchive/sqlalchemy
2
0
Fork 0
mirror of https://github.com/sqlalchemy/sqlalchemy.git synced 2026-05-21 08:02:07 -04:00
Code Issues Packages Projects Releases Wiki Activity
Files
548afbb846292cfb12186cf9feb5d3e46c558e49
sqlalchemy/test/orm/test_query.py
T
Mike Bayer 1e80028550 See if the future is here 
The docs are going to talk a lot about session.execute(select())
for ORM queries, and additionally it's much easier to help
users with queries and such if we can use this new syntax.
I'm hoping to see how hard it is to get a unified tutorial
started that switches to new syntax.  Basically, new syntax
is much easier to explain and less buggy.   But, if we
are starting to present new syntax with the explicit goal
of being easier to explain for less experienced programmers,
the "future" thing is going to just be an impediment
to that.

See if we can remove "future" from session.execute(),
so that ORM-enabled select() statements return ORM results
at that level.  This does not change the presence of the
"future" flag for the Session's construction and for its
transactional behaviors.

The only perceptible change of the future flag for
session.execute() is that session.execute(select()) where the
statement has ORM entities in it now returns ORM new
style tuples rather than old style tuples.   Like
mutating a URL, it's hopefully not very common that people
are doing this.

Change-Id: I0aa10322bb787d554d32772e3bc60548f1bf6206
2020-08-28 18:14:11 -04:00

6648 lines
208 KiB
Python
Raw Blame History

import contextlib
import functools
import sqlalchemy as sa
from sqlalchemy import and_
from sqlalchemy import asc
from sqlalchemy import between
from sqlalchemy import bindparam
from sqlalchemy import Boolean
from sqlalchemy import case
from sqlalchemy import cast
from sqlalchemy import collate
from sqlalchemy import column
from sqlalchemy import desc
from sqlalchemy import distinct
from sqlalchemy import event
from sqlalchemy import exc as sa_exc
from sqlalchemy import exists
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import inspect
from sqlalchemy import Integer
from sqlalchemy import literal
from sqlalchemy import literal_column
from sqlalchemy import MetaData
from sqlalchemy import null
from sqlalchemy import or_
from sqlalchemy import select
from sqlalchemy import String
from sqlalchemy import table
from sqlalchemy import testing
from sqlalchemy import text
from sqlalchemy import true
from sqlalchemy import type_coerce
from sqlalchemy import Unicode
from sqlalchemy import union
from sqlalchemy import util
from sqlalchemy.engine import default
from sqlalchemy.ext.compiler import compiles
from sqlalchemy.orm import aliased
from sqlalchemy.orm import attributes
from sqlalchemy.orm import backref
from sqlalchemy.orm import Bundle
from sqlalchemy.orm import column_property
from sqlalchemy.orm import contains_eager
from sqlalchemy.orm import create_session
from sqlalchemy.orm import defer
from sqlalchemy.orm import joinedload
from sqlalchemy.orm import lazyload
from sqlalchemy.orm import mapper
from sqlalchemy.orm import Query
from sqlalchemy.orm import relationship
from sqlalchemy.orm import selectinload
from sqlalchemy.orm import Session
from sqlalchemy.orm import subqueryload
from sqlalchemy.orm import synonym
from sqlalchemy.orm.context import QueryContext
from sqlalchemy.orm.util import join
from sqlalchemy.orm.util import with_parent
from sqlalchemy.sql import expression
from sqlalchemy.sql import operators
from sqlalchemy.sql.selectable import LABEL_STYLE_TABLENAME_PLUS_COL
from sqlalchemy.testing import AssertsCompiledSQL
from sqlalchemy.testing import fixtures
from sqlalchemy.testing import is_
from sqlalchemy.testing import is_false
from sqlalchemy.testing import is_true
from sqlalchemy.testing import mock
from sqlalchemy.testing.assertions import assert_raises
from sqlalchemy.testing.assertions import assert_raises_message
from sqlalchemy.testing.assertions import eq_
from sqlalchemy.testing.assertions import eq_ignore_whitespace
from sqlalchemy.testing.assertions import expect_warnings
from sqlalchemy.testing.assertsql import CompiledSQL
from sqlalchemy.testing.schema import Column
from sqlalchemy.testing.schema import Table
from sqlalchemy.util import collections_abc
from test.orm import _fixtures
class QueryTest(_fixtures.FixtureTest):
run_setup_mappers = "once"
run_inserts = "once"
run_deletes = None
@classmethod
def setup_mappers(cls):
cls._setup_stock_mapping()
class MiscTest(QueryTest):
run_create_tables = None
run_inserts = None
def test_with_session(self):
User = self.classes.User
s1 = Session()
s2 = Session()
q1 = s1.query(User)
q2 = q1.with_session(s2)
assert q2.session is s2
assert q1.session is s1
class OnlyReturnTuplesTest(QueryTest):
def test_single_entity_false(self):
User = self.classes.User
query = create_session().query(User).only_return_tuples(False)
is_true(query.is_single_entity)
row = query.first()
assert isinstance(row, User)
def test_single_entity_true(self):
User = self.classes.User
query = create_session().query(User).only_return_tuples(True)
is_false(query.is_single_entity)
row = query.first()
assert isinstance(row, collections_abc.Sequence)
assert isinstance(row._mapping, collections_abc.Mapping)
def test_multiple_entity_false(self):
User = self.classes.User
query = create_session().query(User.id, User).only_return_tuples(False)
is_false(query.is_single_entity)
row = query.first()
assert isinstance(row, collections_abc.Sequence)
assert isinstance(row._mapping, collections_abc.Mapping)
def test_multiple_entity_true(self):
User = self.classes.User
query = create_session().query(User.id, User).only_return_tuples(True)
is_false(query.is_single_entity)
row = query.first()
assert isinstance(row, collections_abc.Sequence)
assert isinstance(row._mapping, collections_abc.Mapping)
class RowTupleTest(QueryTest):
run_setup_mappers = None
def test_custom_names(self):
User, users = self.classes.User, self.tables.users
mapper(User, users, properties={"uname": users.c.name})
row = (
create_session()
.query(User.id, User.uname)
.filter(User.id == 7)
.first()
)
eq_(row.id, 7)
eq_(row.uname, "jack")
@testing.combinations(
(lambda s, users: s.query(users),),
(lambda s, User: s.query(User.id, User.name),),
(lambda s, users: s.query(users.c.id, users.c.name),),
(lambda s, users: s.query(users.c.id, users.c.name),),
)
def test_modern_tuple(self, test_case):
# check we are not getting a LegacyRow back
User, users = self.classes.User, self.tables.users
mapper(User, users)
s = Session()
q = testing.resolve_lambda(test_case, **locals())
row = q.order_by(User.id).first()
assert "jack" in row
@testing.combinations(
(lambda s, users: s.query(users),),
(lambda s, User: s.query(User.id, User.name),),
(lambda s, users: s.query(users.c.id, users.c.name),),
(lambda s, users: select(users),),
(lambda s, User: select(User.id, User.name),),
(lambda s, users: select(users.c.id, users.c.name),),
)
def test_modern_tuple_future(self, test_case):
# check we are not getting a LegacyRow back
User, users = self.classes.User, self.tables.users
mapper(User, users)
s = Session(testing.db)
q = testing.resolve_lambda(test_case, **locals())
row = s.execute(q.order_by(User.id)).first()
assert "jack" in row
@testing.combinations(
(lambda s, users: select(users),),
(lambda s, User: select(User.id, User.name),),
(lambda s, users: select(users.c.id, users.c.name),),
)
def test_legacy_tuple_old_select(self, test_case):
User, users = self.classes.User, self.tables.users
mapper(User, users)
s = Session()
q = testing.resolve_lambda(test_case, **locals())
row = s.execute(q.order_by(User.id)).first()
# s.execute() is now new style row
assert "jack" in row
def test_entity_mapping_access(self):
User, users = self.classes.User, self.tables.users
Address, addresses = self.classes.Address, self.tables.addresses
mapper(User, users, properties={"addresses": relationship(Address)})
mapper(Address, addresses)
s = Session()
row = s.query(User).only_return_tuples(True).first()
eq_(row._mapping[User], row[0])
row = s.query(User, Address).join(User.addresses).first()
eq_(row._mapping[User], row[0])
eq_(row._mapping[Address], row[1])
eq_(row._mapping["User"], row[0])
eq_(row._mapping["Address"], row[1])
u1 = aliased(User)
row = s.query(u1).only_return_tuples(True).first()
eq_(row._mapping[u1], row[0])
assert_raises(KeyError, lambda: row._mapping[User])
row = (
s.query(User.id, Address.email_address)
.join(User.addresses)
.first()
)
eq_(row._mapping[User.id], row[0])
eq_(row._mapping[User.id], row[0])
eq_(row._mapping["id"], row[0])
eq_(row._mapping[Address.email_address], row[1])
eq_(row._mapping["email_address"], row[1])
eq_(row._mapping[users.c.id], row[0])
eq_(row._mapping[addresses.c.email_address], row[1])
assert_raises(KeyError, lambda: row._mapping[User.name])
assert_raises(KeyError, lambda: row._mapping[users.c.name])
@testing.combinations(
lambda sess, User: (
sess.query(User),
[
{
"name": "User",
"type": User,
"aliased": False,
"expr": User,
"entity": User,
}
],
),
lambda sess, User, users: (
sess.query(User.id, User),
[
{
"name": "id",
"type": users.c.id.type,
"aliased": False,
"expr": User.id,
"entity": User,
},
{
"name": "User",
"type": User,
"aliased": False,
"expr": User,
"entity": User,
},
],
),
lambda sess, User, user_alias, users: (
sess.query(User.id, user_alias),
[
{
"name": "id",
"type": users.c.id.type,
"aliased": False,
"expr": User.id,
"entity": User,
},
{
"name": None,
"type": User,
"aliased": True,
"expr": user_alias,
"entity": user_alias,
},
],
),
lambda sess, user_alias, users: (
sess.query(user_alias.id),
[
{
"name": "id",
"type": users.c.id.type,
"aliased": True,
"expr": user_alias.id,
"entity": user_alias,
}
],
),
lambda sess, user_alias_id_label, users, user_alias: (
sess.query(user_alias_id_label),
[
{
"name": "foo",
"type": users.c.id.type,
"aliased": True,
"expr": user_alias_id_label,
"entity": user_alias,
}
],
),
lambda sess, address_alias, Address: (
sess.query(address_alias),
[
{
"name": "aalias",
"type": Address,
"aliased": True,
"expr": address_alias,
"entity": address_alias,
}
],
),
lambda sess, name_label, fn, users, User: (
sess.query(name_label, fn),
[
{
"name": "uname",
"type": users.c.name.type,
"aliased": False,
"expr": name_label,
"entity": User,
},
{
"name": None,
"type": fn.type,
"aliased": False,
"expr": fn,
"entity": User,
},
],
),
lambda sess, cte: (
sess.query(cte),
[
{
"aliased": False,
"expr": cte.c.id,
"type": cte.c.id.type,
"name": "id",
"entity": None,
}
],
),
lambda sess, subq1: (
sess.query(subq1.c.id),
[
{
"aliased": False,
"expr": subq1.c.id,
"type": subq1.c.id.type,
"name": "id",
"entity": None,
}
],
),
lambda sess, subq2: (
sess.query(subq2.c.id),
[
{
"aliased": False,
"expr": subq2.c.id,
"type": subq2.c.id.type,
"name": "id",
"entity": None,
}
],
),
lambda sess, users: (
sess.query(users),
[
{
"aliased": False,
"expr": users.c.id,
"type": users.c.id.type,
"name": "id",
"entity": None,
},
{
"aliased": False,
"expr": users.c.name,
"type": users.c.name.type,
"name": "name",
"entity": None,
},
],
),
lambda sess, users: (
sess.query(users.c.name),
[
{
"name": "name",
"type": users.c.name.type,
"aliased": False,
"expr": users.c.name,
"entity": None,
}
],
),
lambda sess, bundle, User: (
sess.query(bundle),
[
{
"aliased": False,
"expr": bundle,
"type": Bundle,
"name": "b1",
"entity": User,
}
],
),
)
def test_column_metadata(self, test_case):
users, Address, addresses, User = (
self.tables.users,
self.classes.Address,
self.tables.addresses,
self.classes.User,
)
mapper(User, users)
mapper(Address, addresses)
sess = create_session()
user_alias = aliased(User)
user_alias_id_label = user_alias.id.label("foo")
address_alias = aliased(Address, name="aalias")
fn = func.count(User.id)
name_label = User.name.label("uname")
bundle = Bundle("b1", User.id, User.name)
subq1 = sess.query(User.id).subquery()
subq2 = sess.query(bundle).subquery()
cte = sess.query(User.id).cte()
q, asserted = testing.resolve_lambda(test_case, **locals())
eq_(q.column_descriptions, asserted)
def test_unhashable_type(self):
from sqlalchemy.types import TypeDecorator, Integer
from sqlalchemy.sql import type_coerce
class MyType(TypeDecorator):
impl = Integer
hashable = False
def process_result_value(self, value, dialect):
return [value]
User, users = self.classes.User, self.tables.users
mapper(User, users)
s = Session()
q = s.query(User, type_coerce(users.c.id, MyType).label("foo")).filter(
User.id == 7
)
row = q.first()
eq_(row, (User(id=7), [7]))
class BindSensitiveStringifyTest(fixtures.TestBase):
def _fixture(self, bind_to=None):
# building a totally separate metadata /mapping here
# because we need to control if the MetaData is bound or not
class User(object):
pass
m = MetaData(bind=bind_to)
user_table = Table(
"users",
m,
Column("id", Integer, primary_key=True),
Column("name", String(50)),
)
mapper(User, user_table)
return User
def _dialect_fixture(self):
class MyDialect(default.DefaultDialect):
default_paramstyle = "qmark"
from sqlalchemy.engine import base
return base.Engine(mock.Mock(), MyDialect(), mock.Mock())
def _test(
self, bound_metadata, bound_session, session_present, expect_bound
):
if bound_metadata or bound_session:
eng = self._dialect_fixture()
else:
eng = None
User = self._fixture(bind_to=eng if bound_metadata else None)
s = Session(eng if bound_session else None)
q = s.query(User).filter(User.id == 7)
if not session_present:
q = q.with_session(None)
eq_ignore_whitespace(
str(q),
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = ?"
if expect_bound
else "SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = :id_1",
)
def test_query_unbound_metadata_bound_session(self):
self._test(False, True, True, True)
def test_query_bound_metadata_unbound_session(self):
self._test(True, False, True, True)
def test_query_unbound_metadata_no_session(self):
self._test(False, False, False, False)
def test_query_unbound_metadata_unbound_session(self):
self._test(False, False, True, False)
def test_query_bound_metadata_bound_session(self):
self._test(True, True, True, True)
class GetTest(QueryTest):
def test_loader_options(self):
User = self.classes.User
s = Session()
u1 = s.query(User).options(joinedload(User.addresses)).get(8)
eq_(len(u1.__dict__["addresses"]), 3)
def test_loader_options_future(self):
User = self.classes.User
s = Session()
u1 = s.get(User, 8, options=[joinedload(User.addresses)])
eq_(len(u1.__dict__["addresses"]), 3)
def test_get_composite_pk_keyword_based_no_result(self):
CompositePk = self.classes.CompositePk
s = Session()
is_(s.query(CompositePk).get({"i": 100, "j": 100}), None)
def test_get_composite_pk_keyword_based_result(self):
CompositePk = self.classes.CompositePk
s = Session()
one_two = s.query(CompositePk).get({"i": 1, "j": 2})
eq_(one_two.i, 1)
eq_(one_two.j, 2)
eq_(one_two.k, 3)
def test_get_composite_pk_keyword_based_wrong_keys(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(sa_exc.InvalidRequestError, q.get, {"i": 1, "k": 2})
def test_get_composite_pk_keyword_based_too_few_keys(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(sa_exc.InvalidRequestError, q.get, {"i": 1})
def test_get_composite_pk_keyword_based_too_many_keys(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(
sa_exc.InvalidRequestError, q.get, {"i": 1, "j": "2", "k": 3}
)
def test_get(self):
User = self.classes.User
s = create_session()
assert s.query(User).get(19) is None
u = s.query(User).get(7)
u2 = s.query(User).get(7)
assert u is u2
s.expunge_all()
u2 = s.query(User).get(7)
assert u is not u2
def test_get_future(self):
User = self.classes.User
s = create_session()
assert s.get(User, 19) is None
u = s.get(User, 7)
u2 = s.get(User, 7)
assert u is u2
s.expunge_all()
u2 = s.get(User, 7)
assert u is not u2
def test_get_composite_pk_no_result(self):
CompositePk = self.classes.CompositePk
s = Session()
assert s.query(CompositePk).get((100, 100)) is None
def test_get_composite_pk_result(self):
CompositePk = self.classes.CompositePk
s = Session()
one_two = s.query(CompositePk).get((1, 2))
assert one_two.i == 1
assert one_two.j == 2
assert one_two.k == 3
def test_get_too_few_params(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(sa_exc.InvalidRequestError, q.get, 7)
def test_get_too_few_params_tuple(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(sa_exc.InvalidRequestError, q.get, (7,))
def test_get_too_many_params(self):
CompositePk = self.classes.CompositePk
s = Session()
q = s.query(CompositePk)
assert_raises(sa_exc.InvalidRequestError, q.get, (7, 10, 100))
def test_get_against_col(self):
User = self.classes.User
s = Session()
q = s.query(User.id)
assert_raises(sa_exc.InvalidRequestError, q.get, (5,))
@testing.fixture
def outerjoin_mapping(self):
users, addresses = self.tables.users, self.tables.addresses
s = users.outerjoin(addresses)
class UserThing(fixtures.ComparableEntity):
pass
mapper(
UserThing,
s,
properties={
"id": (users.c.id, addresses.c.user_id),
"address_id": addresses.c.id,
},
)
return UserThing
def test_get_null_pk(self, outerjoin_mapping):
"""test that a mapping which can have None in a
PK (i.e. map to an outerjoin) works with get()."""
UserThing = outerjoin_mapping
sess = create_session()
u10 = sess.query(UserThing).get((10, None))
eq_(u10, UserThing(id=10))
def test_get_fully_null_pk(self):
User = self.classes.User
s = Session()
q = s.query(User)
assert_raises_message(
sa_exc.SAWarning,
r"fully NULL primary key identity cannot load any object. "
"This condition may raise an error in a future release.",
q.get,
None,
)
def test_get_fully_null_composite_pk(self, outerjoin_mapping):
UserThing = outerjoin_mapping
s = Session()
q = s.query(UserThing)
assert_raises_message(
sa_exc.SAWarning,
r"fully NULL primary key identity cannot load any object. "
"This condition may raise an error in a future release.",
q.get,
(None, None),
)
def test_no_criterion(self):
"""test that get()/load() does not use preexisting filter/etc.
criterion"""
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(User).join("addresses").filter(Address.user_id == 8)
assert_raises(sa_exc.InvalidRequestError, q.get, 7)
assert_raises(
sa_exc.InvalidRequestError,
s.query(User).filter(User.id == 7).get,
19,
)
# order_by()/get() doesn't raise
s.query(User).order_by(User.id).get(8)
def test_no_criterion_when_already_loaded(self):
"""test that get()/load() does not use preexisting filter/etc.
criterion, even when we're only using the identity map."""
User, Address = self.classes.User, self.classes.Address
s = create_session()
s.query(User).get(7)
q = s.query(User).join("addresses").filter(Address.user_id == 8)
assert_raises(sa_exc.InvalidRequestError, q.get, 7)
def test_unique_param_names(self):
users = self.tables.users
class SomeUser(object):
pass
s = users.select(users.c.id != 12).alias("users")
m = mapper(SomeUser, s)
assert s.primary_key == m.primary_key
sess = create_session()
assert sess.query(SomeUser).get(7).name == "jack"
def test_load(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
assert s.query(User).populate_existing().get(19) is None
u = s.query(User).populate_existing().get(7)
u2 = s.query(User).populate_existing().get(7)
assert u is u2
s.expunge_all()
u2 = s.query(User).populate_existing().get(7)
assert u is not u2
u2.name = "some name"
a = Address(email_address="some other name")
u2.addresses.append(a)
assert u2 in s.dirty
assert a in u2.addresses
s.query(User).populate_existing().get(7)
assert u2 not in s.dirty
assert u2.name == "jack"
assert a not in u2.addresses
@testing.provide_metadata
@testing.requires.unicode_connections
def test_unicode(self):
"""test that Query.get properly sets up the type for the bind
parameter. using unicode would normally fail on postgresql, mysql and
oracle unless it is converted to an encoded string"""
metadata = self.metadata
table = Table(
"unicode_data",
metadata,
Column("id", Unicode(40), primary_key=True),
Column("data", Unicode(40)),
)
metadata.create_all()
ustring = util.b("petit voix m\xe2\x80\x99a").decode("utf-8")
table.insert().execute(id=ustring, data=ustring)
class LocalFoo(self.classes.Base):
pass
mapper(LocalFoo, table)
eq_(
create_session().query(LocalFoo).get(ustring),
LocalFoo(id=ustring, data=ustring),
)
def test_populate_existing(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
userlist = s.query(User).all()
u = userlist[0]
u.name = "foo"
a = Address(name="ed")
u.addresses.append(a)
self.assert_(a in u.addresses)
s.query(User).populate_existing().all()
self.assert_(u not in s.dirty)
self.assert_(u.name == "jack")
self.assert_(a not in u.addresses)
u.addresses[0].email_address = "lala"
u.orders[1].items[2].description = "item 12"
# test that lazy load doesn't change child items
s.query(User).populate_existing().all()
assert u.addresses[0].email_address == "lala"
assert u.orders[1].items[2].description == "item 12"
# eager load does
s.query(User).options(
joinedload("addresses"), joinedload("orders").joinedload("items")
).populate_existing().all()
assert u.addresses[0].email_address == "jack@bean.com"
assert u.orders[1].items[2].description == "item 5"
def test_populate_existing_future(self):
User, Address = self.classes.User, self.classes.Address
s = Session(testing.db, autoflush=False)
userlist = s.query(User).all()
u = userlist[0]
u.name = "foo"
a = Address(name="ed")
u.addresses.append(a)
self.assert_(a in u.addresses)
stmt = select(User).execution_options(populate_existing=True)
s.execute(stmt,).scalars().all()
self.assert_(u not in s.dirty)
self.assert_(u.name == "jack")
self.assert_(a not in u.addresses)
u.addresses[0].email_address = "lala"
u.orders[1].items[2].description = "item 12"
# test that lazy load doesn't change child items
s.query(User).populate_existing().all()
assert u.addresses[0].email_address == "lala"
assert u.orders[1].items[2].description == "item 12"
# eager load does
stmt = (
select(User)
.options(
joinedload("addresses"),
joinedload("orders").joinedload("items"),
)
.execution_options(populate_existing=True)
)
s.execute(stmt).scalars().all()
assert u.addresses[0].email_address == "jack@bean.com"
assert u.orders[1].items[2].description == "item 5"
def test_option_transfer_future(self):
User = self.classes.User
stmt = select(User).execution_options(
populate_existing=True, autoflush=False, yield_per=10
)
s = Session(testing.db)
m1 = mock.Mock()
event.listen(s, "do_orm_execute", m1)
s.execute(stmt)
eq_(
m1.mock_calls[0][1][0].load_options,
QueryContext.default_load_options(
_autoflush=False, _populate_existing=True, _yield_per=10
),
)
class InvalidGenerationsTest(QueryTest, AssertsCompiledSQL):
@testing.combinations(
lambda s, User: s.query(User).limit(2),
lambda s, User: s.query(User).filter(User.id == 1).offset(2),
lambda s, User: s.query(User).limit(2).offset(2),
)
def test_no_limit_offset(self, test_case):
User = self.classes.User
s = create_session()
q = testing.resolve_lambda(test_case, User=User, s=s)
assert_raises(sa_exc.InvalidRequestError, q.join, "addresses")
assert_raises(sa_exc.InvalidRequestError, q.filter, User.name == "ed")
assert_raises(sa_exc.InvalidRequestError, q.filter_by, name="ed")
assert_raises(sa_exc.InvalidRequestError, q.order_by, "foo")
assert_raises(sa_exc.InvalidRequestError, q.group_by, "foo")
assert_raises(sa_exc.InvalidRequestError, q.having, "foo")
q.enable_assertions(False).join("addresses")
q.enable_assertions(False).filter(User.name == "ed")
q.enable_assertions(False).order_by("foo")
q.enable_assertions(False).group_by("foo")
def test_no_from(self):
users, User = self.tables.users, self.classes.User
s = create_session()
q = s.query(User).select_from(users)
assert_raises(sa_exc.InvalidRequestError, q.select_from, users)
q = s.query(User).join("addresses")
assert_raises(sa_exc.InvalidRequestError, q.select_from, users)
q = s.query(User).order_by(User.id)
assert_raises(sa_exc.InvalidRequestError, q.select_from, users)
assert_raises(sa_exc.InvalidRequestError, q.select_from, users)
q.enable_assertions(False).select_from(users)
# this is fine, however
q.from_self()
def test_invalid_select_from(self):
User = self.classes.User
s = create_session()
q = s.query(User)
assert_raises(sa_exc.ArgumentError, q.select_from, User.id == 5)
assert_raises(sa_exc.ArgumentError, q.select_from, User.id)
def test_invalid_from_statement(self):
User, addresses, users = (
self.classes.User,
self.tables.addresses,
self.tables.users,
)
s = create_session()
q = s.query(User)
assert_raises(sa_exc.ArgumentError, q.from_statement, User.id == 5)
assert_raises(
sa_exc.ArgumentError, q.from_statement, users.join(addresses)
)
def test_invalid_column(self):
User = self.classes.User
s = create_session()
q = s.query(User)
assert_raises(sa_exc.ArgumentError, q.add_columns, object())
def test_invalid_column_tuple(self):
User = self.classes.User
s = create_session()
q = s.query(User)
assert_raises(sa_exc.ArgumentError, q.add_columns, (1, 1))
def test_distinct(self):
"""test that a distinct() call is not valid before 'clauseelement'
conditions."""
User = self.classes.User
s = create_session()
q = s.query(User).distinct()
assert_raises(sa_exc.InvalidRequestError, q.select_from, User)
assert_raises(
sa_exc.InvalidRequestError,
q.from_statement,
text("select * from table"),
)
assert_raises(sa_exc.InvalidRequestError, q.with_polymorphic, User)
def test_order_by(self):
"""test that an order_by() call is not valid before 'clauseelement'
conditions."""
User = self.classes.User
s = create_session()
q = s.query(User).order_by(User.id)
assert_raises(sa_exc.InvalidRequestError, q.select_from, User)
assert_raises(
sa_exc.InvalidRequestError,
q.from_statement,
text("select * from table"),
)
assert_raises(sa_exc.InvalidRequestError, q.with_polymorphic, User)
def test_only_full_mapper_zero(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(User, Address)
assert_raises(sa_exc.InvalidRequestError, q.get, 5)
def test_entity_or_mapper_zero_from_context(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(User, Address)._compile_state()
is_(q._mapper_zero(), inspect(User))
is_(q._entity_zero(), inspect(User))
u1 = aliased(User)
q = s.query(u1, Address)._compile_state()
is_(q._mapper_zero(), inspect(User))
is_(q._entity_zero(), inspect(u1))
q = s.query(User).select_from(Address)._compile_state()
is_(q._mapper_zero(), inspect(User))
is_(q._entity_zero(), inspect(Address))
q = s.query(User.name, Address)._compile_state()
is_(q._mapper_zero(), inspect(User))
is_(q._entity_zero(), inspect(User))
q = s.query(u1.name, Address)._compile_state()
is_(q._mapper_zero(), inspect(User))
is_(q._entity_zero(), inspect(u1))
q1 = s.query(User).exists()
q = s.query(q1)._compile_state()
is_(q._mapper_zero(), None)
is_(q._entity_zero(), None)
q1 = s.query(Bundle("b1", User.id, User.name))._compile_state()
is_(q1._mapper_zero(), inspect(User))
is_(q1._entity_zero(), inspect(User))
@testing.combinations(
lambda s, User: s.query(User).filter(User.id == 5),
lambda s, User: s.query(User).filter_by(id=5),
lambda s, User: s.query(User).limit(5),
lambda s, User: s.query(User).group_by(User.name),
lambda s, User: s.query(User).order_by(User.name),
)
def test_from_statement(self, test_case):
User = self.classes.User
s = create_session()
q = testing.resolve_lambda(test_case, User=User, s=s)
assert_raises(sa_exc.InvalidRequestError, q.from_statement, text("x"))
@testing.combinations(
(Query.filter, lambda meth, User: meth(User.id == 5)),
(Query.filter_by, lambda meth: meth(id=5)),
(Query.limit, lambda meth: meth(5)),
(Query.group_by, lambda meth, User: meth(User.name)),
(Query.order_by, lambda meth, User: meth(User.name)),
)
def test_from_statement_text(self, meth, test_case):
User = self.classes.User
s = Session()
q = s.query(User)
q = q.from_statement(text("x"))
m = functools.partial(meth, q)
assert_raises(
sa_exc.InvalidRequestError,
testing.resolve_lambda,
test_case,
meth=m,
User=User,
s=s,
)
def test_illegal_coercions(self):
User = self.classes.User
assert_raises_message(
sa_exc.ArgumentError,
"SQL expression element expected, got .*User",
distinct,
User,
)
ua = aliased(User)
assert_raises_message(
sa_exc.ArgumentError,
"SQL expression element expected, got .*User",
distinct,
ua,
)
s = Session()
assert_raises_message(
sa_exc.ArgumentError,
"SQL expression element or literal value expected, got .*User",
lambda: s.query(User).filter(User.name == User),
)
u1 = User()
assert_raises_message(
sa_exc.ArgumentError,
"SQL expression element expected, got .*User",
distinct,
u1,
)
assert_raises_message(
sa_exc.ArgumentError,
"SQL expression element or literal value expected, got .*User",
lambda: s.query(User).filter(User.name == u1),
)
class OperatorTest(QueryTest, AssertsCompiledSQL):
"""test sql.Comparator implementation for MapperProperties"""
__dialect__ = "default"
def _test(self, clause, expected, entity=None, checkparams=None):
dialect = default.DefaultDialect()
if entity is not None:
# specify a lead entity, so that when we are testing
# correlation, the correlation actually happens
sess = Session()
lead = sess.query(entity)
context = lead._compile_context()
context.compile_state.statement._label_style = (
LABEL_STYLE_TABLENAME_PLUS_COL
)
lead = context.compile_state.statement.compile(dialect=dialect)
expected = (str(lead) + " WHERE " + expected).replace("\n", "")
clause = sess.query(entity).filter(clause)
self.assert_compile(clause, expected, checkparams=checkparams)
def _test_filter_aliases(
self, clause, expected, from_, onclause, checkparams=None
):
dialect = default.DefaultDialect()
sess = Session()
lead = sess.query(from_).join(onclause, aliased=True)
full = lead.filter(clause)
context = lead._compile_context()
context.statement._label_style = LABEL_STYLE_TABLENAME_PLUS_COL
lead = context.statement.compile(dialect=dialect)
expected = (str(lead) + " WHERE " + expected).replace("\n", "")
self.assert_compile(full, expected, checkparams=checkparams)
@testing.combinations(
(operators.add, "+"),
(operators.mul, "*"),
(operators.sub, "-"),
(operators.truediv, "/"),
(operators.div, "/"),
argnames="py_op, sql_op",
id_="ar",
)
@testing.combinations(
(lambda User: 5, lambda User: User.id, ":id_1 %s users.id"),
(lambda: 5, lambda: literal(6), ":param_1 %s :param_2"),
(lambda User: User.id, lambda: 5, "users.id %s :id_1"),
(lambda User: User.id, lambda: literal("b"), "users.id %s :param_1"),
(lambda User: User.id, lambda User: User.id, "users.id %s users.id"),
(lambda: literal(5), lambda: "b", ":param_1 %s :param_2"),
(lambda: literal(5), lambda User: User.id, ":param_1 %s users.id"),
(lambda: literal(5), lambda: literal(6), ":param_1 %s :param_2"),
argnames="lhs, rhs, res",
id_="aar",
)
def test_arithmetic(self, py_op, sql_op, lhs, rhs, res):
User = self.classes.User
lhs = testing.resolve_lambda(lhs, User=User)
rhs = testing.resolve_lambda(rhs, User=User)
create_session().query(User)
self._test(py_op(lhs, rhs), res % sql_op)
@testing.combinations(
(operators.lt, "<", ">"),
(operators.gt, ">", "<"),
(operators.eq, "=", "="),
(operators.ne, "!=", "!="),
(operators.le, "<=", ">="),
(operators.ge, ">=", "<="),
id_="arr",
argnames="py_op, fwd_op, rev_op",
)
@testing.lambda_combinations(
lambda User, ualias: (
("a", User.id, ":id_1", "users.id"),
("a", literal("b"), ":param_2", ":param_1"), # note swap!
(User.id, "b", "users.id", ":id_1"),
(User.id, literal("b"), "users.id", ":param_1"),
(User.id, User.id, "users.id", "users.id"),
(literal("a"), "b", ":param_1", ":param_2"),
(literal("a"), User.id, ":param_1", "users.id"),
(literal("a"), literal("b"), ":param_1", ":param_2"),
(ualias.id, literal("b"), "users_1.id", ":param_1"),
(User.id, ualias.name, "users.id", "users_1.name"),
(User.name, ualias.name, "users.name", "users_1.name"),
(ualias.name, User.name, "users_1.name", "users.name"),
),
argnames="fixture",
)
def test_comparison(self, py_op, fwd_op, rev_op, fixture):
User = self.classes.User
create_session().query(User)
ualias = aliased(User)
lhs, rhs, l_sql, r_sql = fixture(User=User, ualias=ualias)
# the compiled clause should match either (e.g.):
# 'a' < 'b' -or- 'b' > 'a'.
compiled = str(
py_op(lhs, rhs).compile(dialect=default.DefaultDialect())
)
fwd_sql = "%s %s %s" % (l_sql, fwd_op, r_sql)
rev_sql = "%s %s %s" % (r_sql, rev_op, l_sql)
self.assert_(
compiled == fwd_sql or compiled == rev_sql,
"\n'"
+ compiled
+ "'\n does not match\n'"
+ fwd_sql
+ "'\n or\n'"
+ rev_sql
+ "'",
)
def test_o2m_compare_to_null(self):
User = self.classes.User
self._test(User.id == None, "users.id IS NULL") # noqa
self._test(User.id != None, "users.id IS NOT NULL") # noqa
self._test(~(User.id == None), "users.id IS NOT NULL") # noqa
self._test(~(User.id != None), "users.id IS NULL") # noqa
self._test(None == User.id, "users.id IS NULL") # noqa
self._test(~(None == User.id), "users.id IS NOT NULL") # noqa
def test_m2o_compare_to_null(self):
Address = self.classes.Address
self._test(Address.user == None, "addresses.user_id IS NULL") # noqa
self._test(
~(Address.user == None), "addresses.user_id IS NOT NULL" # noqa
)
self._test(
~(Address.user != None), "addresses.user_id IS NULL" # noqa
)
self._test(None == Address.user, "addresses.user_id IS NULL") # noqa
self._test(
~(None == Address.user), "addresses.user_id IS NOT NULL" # noqa
)
def test_o2m_compare_to_null_aliased(self):
User = self.classes.User
u1 = aliased(User)
self._test(u1.id == None, "users_1.id IS NULL") # noqa
self._test(u1.id != None, "users_1.id IS NOT NULL") # noqa
self._test(~(u1.id == None), "users_1.id IS NOT NULL") # noqa
self._test(~(u1.id != None), "users_1.id IS NULL") # noqa
def test_m2o_compare_to_null_aliased(self):
Address = self.classes.Address
a1 = aliased(Address)
self._test(a1.user == None, "addresses_1.user_id IS NULL") # noqa
self._test(
~(a1.user == None), "addresses_1.user_id IS NOT NULL" # noqa
)
self._test(a1.user != None, "addresses_1.user_id IS NOT NULL") # noqa
self._test(~(a1.user != None), "addresses_1.user_id IS NULL") # noqa
def test_relationship_unimplemented(self):
User = self.classes.User
for op in [
User.addresses.like,
User.addresses.ilike,
User.addresses.__le__,
User.addresses.__gt__,
]:
assert_raises(NotImplementedError, op, "x")
def test_o2m_any(self):
User, Address = self.classes.User, self.classes.Address
self._test(
User.addresses.any(Address.id == 17),
"EXISTS (SELECT 1 FROM addresses "
"WHERE users.id = addresses.user_id AND addresses.id = :id_1)",
entity=User,
)
def test_o2m_any_aliased(self):
User, Address = self.classes.User, self.classes.Address
u1 = aliased(User)
a1 = aliased(Address)
self._test(
u1.addresses.of_type(a1).any(a1.id == 17),
"EXISTS (SELECT 1 FROM addresses AS addresses_1 "
"WHERE users_1.id = addresses_1.user_id AND "
"addresses_1.id = :id_1)",
entity=u1,
)
def test_m2o_compare_instance(self):
User, Address = self.classes.User, self.classes.Address
u7 = User(id=5)
attributes.instance_state(u7)._commit_all(attributes.instance_dict(u7))
u7.id = 7
self._test(Address.user == u7, ":param_1 = addresses.user_id")
def test_m2o_compare_instance_negated(self):
User, Address = self.classes.User, self.classes.Address
u7 = User(id=5)
attributes.instance_state(u7)._commit_all(attributes.instance_dict(u7))
u7.id = 7
self._test(
Address.user != u7,
"addresses.user_id != :user_id_1 OR addresses.user_id IS NULL",
checkparams={"user_id_1": 7},
)
def test_m2o_compare_instance_negated_warn_on_none(self):
User, Address = self.classes.User, self.classes.Address
u7_transient = User(id=None)
with expect_warnings("Got None for value of column users.id; "):
self._test(
Address.user != u7_transient,
"addresses.user_id != :user_id_1 "
"OR addresses.user_id IS NULL",
checkparams={"user_id_1": None},
)
def test_m2o_compare_instance_aliased(self):
User, Address = self.classes.User, self.classes.Address
u7 = User(id=5)
attributes.instance_state(u7)._commit_all(attributes.instance_dict(u7))
u7.id = 7
u7_transient = User(id=7)
a1 = aliased(Address)
self._test(
a1.user == u7,
":param_1 = addresses_1.user_id",
checkparams={"param_1": 7},
)
self._test(
a1.user != u7,
"addresses_1.user_id != :user_id_1 OR addresses_1.user_id IS NULL",
checkparams={"user_id_1": 7},
)
a1 = aliased(Address)
self._test(
a1.user == u7_transient,
":param_1 = addresses_1.user_id",
checkparams={"param_1": 7},
)
self._test(
a1.user != u7_transient,
"addresses_1.user_id != :user_id_1 OR addresses_1.user_id IS NULL",
checkparams={"user_id_1": 7},
)
def test_selfref_relationship(self):
Node = self.classes.Node
nalias = aliased(Node)
# auto self-referential aliasing
self._test(
Node.children.any(Node.data == "n1"),
"EXISTS (SELECT 1 FROM nodes AS nodes_1 WHERE "
"nodes.id = nodes_1.parent_id AND nodes_1.data = :data_1)",
entity=Node,
checkparams={"data_1": "n1"},
)
# needs autoaliasing
self._test(
Node.children == None, # noqa
"NOT (EXISTS (SELECT 1 FROM nodes AS nodes_1 "
"WHERE nodes.id = nodes_1.parent_id))",
entity=Node,
checkparams={},
)
self._test(
Node.parent == None, # noqa
"nodes.parent_id IS NULL",
checkparams={},
)
self._test(
nalias.parent == None, # noqa
"nodes_1.parent_id IS NULL",
checkparams={},
)
self._test(
nalias.parent != None, # noqa
"nodes_1.parent_id IS NOT NULL",
checkparams={},
)
self._test(
nalias.children == None, # noqa
"NOT (EXISTS ("
"SELECT 1 FROM nodes WHERE nodes_1.id = nodes.parent_id))",
entity=nalias,
checkparams={},
)
self._test(
nalias.children.any(Node.data == "some data"),
"EXISTS (SELECT 1 FROM nodes WHERE "
"nodes_1.id = nodes.parent_id AND nodes.data = :data_1)",
entity=nalias,
checkparams={"data_1": "some data"},
)
# this fails because self-referential any() is auto-aliasing;
# the fact that we use "nalias" here means we get two aliases.
# self._test(
# Node.children.any(nalias.data == 'some data'),
# "EXISTS (SELECT 1 FROM nodes AS nodes_1 WHERE "
# "nodes.id = nodes_1.parent_id AND nodes_1.data = :data_1)",
# entity=Node
# )
self._test(
nalias.parent.has(Node.data == "some data"),
"EXISTS (SELECT 1 FROM nodes WHERE nodes.id = nodes_1.parent_id "
"AND nodes.data = :data_1)",
entity=nalias,
checkparams={"data_1": "some data"},
)
self._test(
Node.parent.has(Node.data == "some data"),
"EXISTS (SELECT 1 FROM nodes AS nodes_1 WHERE "
"nodes_1.id = nodes.parent_id AND nodes_1.data = :data_1)",
entity=Node,
checkparams={"data_1": "some data"},
)
self._test(
Node.parent == Node(id=7),
":param_1 = nodes.parent_id",
checkparams={"param_1": 7},
)
self._test(
nalias.parent == Node(id=7),
":param_1 = nodes_1.parent_id",
checkparams={"param_1": 7},
)
self._test(
nalias.parent != Node(id=7),
"nodes_1.parent_id != :parent_id_1 "
"OR nodes_1.parent_id IS NULL",
checkparams={"parent_id_1": 7},
)
self._test(
nalias.parent != Node(id=7),
"nodes_1.parent_id != :parent_id_1 "
"OR nodes_1.parent_id IS NULL",
checkparams={"parent_id_1": 7},
)
self._test(
nalias.children.contains(Node(id=7, parent_id=12)),
"nodes_1.id = :param_1",
checkparams={"param_1": 12},
)
def test_multilevel_any(self):
User, Address, Dingaling = (
self.classes.User,
self.classes.Address,
self.classes.Dingaling,
)
sess = Session()
q = sess.query(User).filter(
User.addresses.any(
and_(Address.id == Dingaling.address_id, Dingaling.data == "x")
)
)
# new since #2746 - correlate_except() now takes context into account
# so its usage in any() is not as disrupting.
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users "
"WHERE EXISTS (SELECT 1 "
"FROM addresses, dingalings "
"WHERE users.id = addresses.user_id AND "
"addresses.id = dingalings.address_id AND "
"dingalings.data = :data_1)",
)
def test_op(self):
User = self.classes.User
self._test(User.name.op("ilike")("17"), "users.name ilike :name_1")
def test_in(self):
User = self.classes.User
self._test(User.id.in_(["a", "b"]), "users.id IN ([POSTCOMPILE_id_1])")
def test_in_on_relationship_not_supported(self):
User, Address = self.classes.User, self.classes.Address
assert_raises(NotImplementedError, Address.user.in_, [User(id=5)])
def test_neg(self):
User = self.classes.User
self._test(-User.id, "-users.id")
self._test(User.id + -User.id, "users.id + -users.id")
def test_between(self):
User = self.classes.User
self._test(
User.id.between("a", "b"), "users.id BETWEEN :id_1 AND :id_2"
)
def test_collate(self):
User = self.classes.User
self._test(collate(User.id, "utf8_bin"), "users.id COLLATE utf8_bin")
self._test(User.id.collate("utf8_bin"), "users.id COLLATE utf8_bin")
def test_selfref_between(self):
User = self.classes.User
ualias = aliased(User)
self._test(
User.id.between(ualias.id, ualias.id),
"users.id BETWEEN users_1.id AND users_1.id",
)
self._test(
ualias.id.between(User.id, User.id),
"users_1.id BETWEEN users.id AND users.id",
)
def test_clauses(self):
User, Address = self.classes.User, self.classes.Address
for (expr, compare) in (
(func.max(User.id), "max(users.id)"),
(User.id.desc(), "users.id DESC"),
(
between(5, User.id, Address.id),
":param_1 BETWEEN users.id AND addresses.id",
),
# this one would require adding compile() to
# InstrumentedScalarAttribute. do we want this ?
# (User.id, "users.id")
):
c = expr.compile(dialect=default.DefaultDialect())
assert str(c) == compare, "%s != %s" % (str(c), compare)
class ExpressionTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_function_element_column_labels(self):
users = self.tables.users
sess = Session()
class max_(expression.FunctionElement):
name = "max"
@compiles(max_)
def visit_max(element, compiler, **kw):
return "max(%s)" % compiler.process(element.clauses, **kw)
q = sess.query(max_(users.c.id))
eq_(q.all(), [(10,)])
def test_truly_unlabeled_sql_expressions(self):
users = self.tables.users
sess = Session()
class not_named_max(expression.ColumnElement):
name = "not_named_max"
@compiles(not_named_max)
def visit_max(element, compiler, **kw):
return "max(id)"
# assert that there is no "AS max_" or any label of any kind.
eq_(str(select(not_named_max())), "SELECT max(id)")
# ColumnElement still handles it by applying label()
q = sess.query(not_named_max()).select_from(users)
eq_(q.all(), [(10,)])
def test_deferred_instances(self):
User, addresses, Address = (
self.classes.User,
self.tables.addresses,
self.classes.Address,
)
session = create_session()
s = (
session.query(User)
.filter(
and_(
addresses.c.email_address == bindparam("emailad"),
Address.user_id == User.id,
)
)
.statement
)
result = list(
session.query(User)
.params(emailad="jack@bean.com")
.from_statement(s)
)
eq_([User(id=7)], result)
def test_aliased_sql_construct(self):
User, Address = self.classes.User, self.classes.Address
j = join(User, Address)
a1 = aliased(j)
self.assert_compile(
a1.select(),
"SELECT anon_1.users_id, anon_1.users_name, anon_1.addresses_id, "
"anon_1.addresses_user_id, anon_1.addresses_email_address "
"FROM (SELECT users.id AS users_id, users.name AS users_name, "
"addresses.id AS addresses_id, addresses.user_id AS "
"addresses_user_id, addresses.email_address AS "
"addresses_email_address FROM users JOIN addresses "
"ON users.id = addresses.user_id) AS anon_1",
)
def test_aliased_sql_construct_raises_adapt_on_names(self):
User, Address = self.classes.User, self.classes.Address
j = join(User, Address)
assert_raises_message(
sa_exc.ArgumentError,
"adapt_on_names only applies to ORM elements",
aliased,
j,
adapt_on_names=True,
)
def test_scalar_subquery_compile_whereclause(self):
User = self.classes.User
Address = self.classes.Address
session = create_session()
q = session.query(User.id).filter(User.id == 7).scalar_subquery()
q = session.query(Address).filter(Address.user_id == q)
assert isinstance(q.whereclause.right, expression.ColumnElement)
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, addresses.user_id "
"AS addresses_user_id, addresses.email_address AS "
"addresses_email_address FROM addresses WHERE "
"addresses.user_id = (SELECT users.id "
"FROM users WHERE users.id = :id_1)",
)
def test_subquery_no_eagerloads(self):
User = self.classes.User
s = Session()
self.assert_compile(
s.query(User).options(joinedload(User.addresses)).subquery(),
"SELECT users.id, users.name FROM users",
)
def test_exists_no_eagerloads(self):
User = self.classes.User
s = Session()
self.assert_compile(
s.query(
s.query(User).options(joinedload(User.addresses)).exists()
),
"SELECT EXISTS (SELECT 1 FROM users) AS anon_1",
)
def test_named_subquery(self):
User = self.classes.User
session = create_session()
a1 = session.query(User.id).filter(User.id == 7).subquery("foo1")
a2 = session.query(User.id).filter(User.id == 7).subquery(name="foo2")
a3 = session.query(User.id).filter(User.id == 7).subquery()
eq_(a1.name, "foo1")
eq_(a2.name, "foo2")
eq_(a3.name, "%%(%d anon)s" % id(a3))
def test_labeled_subquery(self):
User = self.classes.User
session = create_session()
a1 = (
session.query(User.id)
.filter(User.id == 7)
.subquery(with_labels=True)
)
assert a1.c.users_id is not None
def test_reduced_subquery(self):
User = self.classes.User
ua = aliased(User)
session = create_session()
a1 = (
session.query(User.id, ua.id, ua.name)
.filter(User.id == ua.id)
.subquery(reduce_columns=True)
)
self.assert_compile(
a1,
"SELECT users.id, users_1.name FROM "
"users, users AS users_1 "
"WHERE users.id = users_1.id",
)
def test_label(self):
User = self.classes.User
session = create_session()
q = session.query(User.id).filter(User.id == 7).label("foo")
self.assert_compile(
session.query(q),
"SELECT (SELECT users.id FROM users "
"WHERE users.id = :id_1) AS foo",
)
def test_scalar_subquery(self):
User = self.classes.User
session = create_session()
q = session.query(User.id).filter(User.id == 7).scalar_subquery()
self.assert_compile(
session.query(User).filter(User.id.in_(q)),
"SELECT users.id AS users_id, users.name "
"AS users_name FROM users WHERE users.id "
"IN (SELECT users.id FROM users WHERE "
"users.id = :id_1)",
)
def test_param_transfer(self):
User = self.classes.User
session = create_session()
q = (
session.query(User.id)
.filter(User.id == bindparam("foo"))
.params(foo=7)
.scalar_subquery()
)
q = session.query(User).filter(User.id.in_(q))
eq_(User(id=7), q.one())
def test_in(self):
User, Address = self.classes.User, self.classes.Address
session = create_session()
s = (
session.query(User.id)
.join(User.addresses)
.group_by(User.id)
.having(func.count(Address.id) > 2)
)
eq_(session.query(User).filter(User.id.in_(s)).all(), [User(id=8)])
def test_union(self):
User = self.classes.User
s = create_session()
q1 = s.query(User).filter(User.name == "ed").with_labels()
q2 = s.query(User).filter(User.name == "fred").with_labels()
eq_(
s.query(User)
.from_statement(union(q1, q2).order_by("users_name"))
.all(),
[User(name="ed"), User(name="fred")],
)
def test_select(self):
User = self.classes.User
s = create_session()
# this is actually not legal on most DBs since the subquery has no
# alias
q1 = s.query(User).filter(User.name == "ed")
self.assert_compile(
select(q1.with_labels().subquery()),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name "
"FROM users WHERE users.name = :name_1) AS anon_1",
)
def test_join(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
# TODO: do we want aliased() to detect a query and convert to
# subquery() automatically ?
q1 = s.query(Address).filter(Address.email_address == "jack@bean.com")
adalias = aliased(Address, q1.subquery())
eq_(
s.query(User, adalias)
.join(adalias, User.id == adalias.user_id)
.all(),
[
(
User(id=7, name="jack"),
Address(email_address="jack@bean.com", user_id=7, id=1),
)
],
)
def test_group_by_plain(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).group_by(User.name)
self.assert_compile(
select(q1.with_labels().subquery()),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users GROUP BY users.name) "
"AS anon_1",
)
def test_group_by_append(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).group_by(User.name)
# test append something to group_by
self.assert_compile(
select(q1.group_by(User.id).with_labels().subquery()),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users "
"GROUP BY users.name, users.id) AS anon_1",
)
def test_group_by_cancellation(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).group_by(User.name)
# test cancellation by using None, replacement with something else
self.assert_compile(
select(
q1.group_by(None).group_by(User.id).with_labels().subquery()
),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users GROUP BY users.id) AS anon_1",
)
# test cancellation by using None, replacement with nothing
self.assert_compile(
select(q1.group_by(None).with_labels().subquery()),
"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",
)
def test_group_by_cancelled_still_present(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).group_by(User.name).group_by(None)
q1._no_criterion_assertion("foo")
def test_order_by_plain(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name)
self.assert_compile(
select(q1.with_labels().subquery()),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users ORDER BY users.name) "
"AS anon_1",
)
def test_order_by_append(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name)
# test append something to order_by
self.assert_compile(
select(q1.order_by(User.id).with_labels().subquery()),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users "
"ORDER BY users.name, users.id) AS anon_1",
)
def test_order_by_cancellation(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name)
# test cancellation by using None, replacement with something else
self.assert_compile(
select(
q1.order_by(None).order_by(User.id).with_labels().subquery()
),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users ORDER BY users.id) AS anon_1",
)
# test cancellation by using None, replacement with nothing
self.assert_compile(
select(q1.order_by(None).with_labels().subquery()),
"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",
)
def test_order_by_cancellation_false(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name)
# test cancellation by using None, replacement with something else
self.assert_compile(
select(
q1.order_by(False).order_by(User.id).with_labels().subquery()
),
"SELECT anon_1.users_id, anon_1.users_name FROM "
"(SELECT users.id AS users_id, "
"users.name AS users_name FROM users ORDER BY users.id) AS anon_1",
)
# test cancellation by using None, replacement with nothing
self.assert_compile(
select(q1.order_by(False).with_labels().subquery()),
"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",
)
def test_order_by_cancelled_allows_assertions(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name).order_by(None)
q1._no_criterion_assertion("foo")
def test_legacy_order_by_cancelled_allows_assertions(self):
User = self.classes.User
s = create_session()
q1 = s.query(User.id, User.name).order_by(User.name).order_by(False)
q1._no_criterion_assertion("foo")
class ColumnPropertyTest(_fixtures.FixtureTest, AssertsCompiledSQL):
__dialect__ = "default"
run_setup_mappers = "each"
def _fixture(self, label=True, polymorphic=False):
User, Address = self.classes("User", "Address")
users, addresses = self.tables("users", "addresses")
stmt = (
select(func.max(addresses.c.email_address))
.where(addresses.c.user_id == users.c.id)
.correlate(users)
)
if label:
stmt = stmt.label("email_ad")
else:
stmt = stmt.scalar_subquery()
mapper(
User,
users,
properties={"ead": column_property(stmt)},
with_polymorphic="*" if polymorphic else None,
)
mapper(Address, addresses)
def _func_fixture(self, label=False):
User = self.classes.User
users = self.tables.users
if label:
mapper(
User,
users,
properties={
"foobar": column_property(
func.foob(users.c.name).label(None)
)
},
)
else:
mapper(
User,
users,
properties={
"foobar": column_property(func.foob(users.c.name))
},
)
def test_anon_label_function_auto(self):
self._func_fixture()
User = self.classes.User
s = Session()
u1 = aliased(User)
self.assert_compile(
s.query(User.foobar, u1.foobar),
"SELECT foob(users.name) AS foob_1, foob(users_1.name) AS foob_2 "
"FROM users, users AS users_1",
)
def test_anon_label_function_manual(self):
self._func_fixture(label=True)
User = self.classes.User
s = Session()
u1 = aliased(User)
self.assert_compile(
s.query(User.foobar, u1.foobar),
"SELECT foob(users.name) AS foob_1, foob(users_1.name) AS foob_2 "
"FROM users, users AS users_1",
)
def test_anon_label_ad_hoc_labeling(self):
self._func_fixture()
User = self.classes.User
s = Session()
u1 = aliased(User)
self.assert_compile(
s.query(User.foobar.label("x"), u1.foobar.label("y")),
"SELECT foob(users.name) AS x, foob(users_1.name) AS y "
"FROM users, users AS users_1",
)
def test_order_by_column_prop_string(self):
User, Address = self.classes("User", "Address")
self._fixture(label=True)
s = Session()
q = s.query(User).order_by("email_ad")
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses "
"WHERE addresses.user_id = users.id) AS email_ad, "
"users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY email_ad",
)
def test_order_by_column_prop_aliased_string(self):
User, Address = self.classes("User", "Address")
self._fixture(label=True)
s = Session()
ua = aliased(User)
q = s.query(ua).order_by("email_ad")
assert_raises_message(
sa.exc.CompileError,
"Can't resolve label reference for ORDER BY / GROUP BY",
q.with_labels().statement.compile,
)
def test_order_by_column_labeled_prop_attr_aliased_one(self):
User = self.classes.User
self._fixture(label=True)
ua = aliased(User)
s = Session()
q = s.query(ua).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users_1.id) AS anon_1, "
"users_1.id AS users_1_id, users_1.name AS users_1_name "
"FROM users AS users_1 ORDER BY anon_1",
)
def test_order_by_column_labeled_prop_attr_aliased_two(self):
User = self.classes.User
self._fixture(label=True)
ua = aliased(User)
s = Session()
q = s.query(ua.ead).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, "
"users AS users_1 WHERE addresses.user_id = users_1.id) "
"AS anon_1 ORDER BY anon_1",
)
# we're also testing that the state of "ua" is OK after the
# previous call, so the batching into one test is intentional
q = s.query(ua).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users_1.id) AS anon_1, "
"users_1.id AS users_1_id, users_1.name AS users_1_name "
"FROM users AS users_1 ORDER BY anon_1",
)
def test_order_by_column_labeled_prop_attr_aliased_three(self):
User = self.classes.User
self._fixture(label=True)
ua = aliased(User)
s = Session()
q = s.query(User.ead, ua.ead).order_by(User.ead, ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, users WHERE addresses.user_id = users.id) "
"AS email_ad, (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, users AS users_1 WHERE addresses.user_id = "
"users_1.id) AS anon_1 ORDER BY email_ad, anon_1",
)
q = s.query(User, ua).order_by(User.ead, ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users.id) AS "
"email_ad, users.id AS users_id, users.name AS users_name, "
"(SELECT max(addresses.email_address) AS max_1 FROM addresses "
"WHERE addresses.user_id = users_1.id) AS anon_1, users_1.id "
"AS users_1_id, users_1.name AS users_1_name FROM users, "
"users AS users_1 ORDER BY email_ad, anon_1",
)
def test_order_by_column_labeled_prop_attr_aliased_four(self):
User = self.classes.User
self._fixture(label=True, polymorphic=True)
ua = aliased(User)
s = Session()
q = s.query(ua, User.id).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 FROM "
"addresses WHERE addresses.user_id = users_1.id) AS anon_1, "
"users_1.id AS users_1_id, users_1.name AS users_1_name, "
"users.id AS users_id FROM users AS users_1, "
"users ORDER BY anon_1",
)
def test_order_by_column_unlabeled_prop_attr_aliased_one(self):
User = self.classes.User
self._fixture(label=False)
ua = aliased(User)
s = Session()
q = s.query(ua).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users_1.id) AS anon_1, "
"users_1.id AS users_1_id, users_1.name AS users_1_name "
"FROM users AS users_1 ORDER BY anon_1",
)
def test_order_by_column_unlabeled_prop_attr_aliased_two(self):
User = self.classes.User
self._fixture(label=False)
ua = aliased(User)
s = Session()
q = s.query(ua.ead).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, "
"users AS users_1 WHERE addresses.user_id = users_1.id) "
"AS anon_1 ORDER BY anon_1",
)
# we're also testing that the state of "ua" is OK after the
# previous call, so the batching into one test is intentional
q = s.query(ua).order_by(ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users_1.id) AS anon_1, "
"users_1.id AS users_1_id, users_1.name AS users_1_name "
"FROM users AS users_1 ORDER BY anon_1",
)
def test_order_by_column_unlabeled_prop_attr_aliased_three(self):
User = self.classes.User
self._fixture(label=False)
ua = aliased(User)
s = Session()
q = s.query(User.ead, ua.ead).order_by(User.ead, ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, users WHERE addresses.user_id = users.id) "
"AS anon_1, (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses, users AS users_1 "
"WHERE addresses.user_id = users_1.id) AS anon_2 "
"ORDER BY anon_1, anon_2",
)
q = s.query(User, ua).order_by(User.ead, ua.ead)
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses WHERE addresses.user_id = users.id) AS "
"anon_1, users.id AS users_id, users.name AS users_name, "
"(SELECT max(addresses.email_address) AS max_1 FROM addresses "
"WHERE addresses.user_id = users_1.id) AS anon_2, users_1.id "
"AS users_1_id, users_1.name AS users_1_name FROM users, "
"users AS users_1 ORDER BY anon_1, anon_2",
)
def test_order_by_column_prop_attr(self):
User, Address = self.classes("User", "Address")
self._fixture(label=True)
s = Session()
q = s.query(User).order_by(User.ead)
# this one is a bit of a surprise; this is compiler
# label-order-by logic kicking in, but won't work in more
# complex cases.
self.assert_compile(
q,
"SELECT (SELECT max(addresses.email_address) AS max_1 "
"FROM addresses "
"WHERE addresses.user_id = users.id) AS email_ad, "
"users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY email_ad",
)
def test_order_by_column_prop_attr_non_present(self):
User, Address = self.classes("User", "Address")
self._fixture(label=True)
s = Session()
q = s.query(User).options(defer(User.ead)).order_by(User.ead)
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY "
"(SELECT max(addresses.email_address) AS max_1 "
"FROM addresses "
"WHERE addresses.user_id = users.id)",
)
class ComparatorTest(QueryTest):
def test_clause_element_query_resolve(self):
from sqlalchemy.orm.properties import ColumnProperty
User = self.classes.User
class Comparator(ColumnProperty.Comparator):
def __init__(self, expr):
self.expr = expr
def __clause_element__(self):
return self.expr
# this use case isn't exactly needed in this form, however it tests
# that we resolve for multiple __clause_element__() calls as is needed
# by systems like composites
sess = Session()
eq_(
sess.query(Comparator(User.id))
.order_by(Comparator(User.id))
.all(),
[(7,), (8,), (9,), (10,)],
)
# more slice tests are available in test/orm/generative.py
class SliceTest(QueryTest):
__dialect__ = "default"
__backend__ = True
def test_first(self):
User = self.classes.User
assert User(id=7) == create_session().query(User).first()
assert (
create_session().query(User).filter(User.id == 27).first() is None
)
def test_limit_offset_applies(self):
"""Test that the expected LIMIT/OFFSET is applied for slices.
The LIMIT/OFFSET syntax differs slightly on all databases, and
query[x:y] executes immediately, so we are asserting against
SQL strings using sqlite's syntax.
"""
User = self.classes.User
sess = create_session()
q = sess.query(User).order_by(User.id)
self.assert_sql(
testing.db,
lambda: q[10:20],
[
(
"SELECT users.id AS users_id, users.name "
"AS users_name FROM users ORDER BY users.id "
"LIMIT :param_1 OFFSET :param_2",
{"param_1": 10, "param_2": 10},
)
],
)
self.assert_sql(
testing.db,
lambda: q[:20],
[
(
"SELECT users.id AS users_id, users.name "
"AS users_name FROM users ORDER BY users.id "
"LIMIT :param_1",
{"param_1": 20},
)
],
)
self.assert_sql(
testing.db,
lambda: q[5:],
[
(
"SELECT users.id AS users_id, users.name "
"AS users_name FROM users ORDER BY users.id "
"LIMIT -1 OFFSET :param_1",
{"param_1": 5},
)
],
)
self.assert_sql(testing.db, lambda: q[2:2], [])
self.assert_sql(testing.db, lambda: q[-2:-5], [])
self.assert_sql(
testing.db,
lambda: q[-5:-2],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id",
{},
)
],
)
self.assert_sql(
testing.db,
lambda: q[-5:],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id",
{},
)
],
)
self.assert_sql(
testing.db,
lambda: q[:],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id",
{},
)
],
)
@testing.requires.sql_expression_limit_offset
def test_first_against_expression_offset(self):
User = self.classes.User
sess = create_session()
q = (
sess.query(User)
.order_by(User.id)
.offset(literal_column("2") + literal_column("3"))
)
self.assert_sql(
testing.db,
q.first,
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id "
"LIMIT :param_1 OFFSET 2 + 3",
[{"param_1": 1}],
)
],
)
@testing.requires.sql_expression_limit_offset
def test_full_slice_against_expression_offset(self):
User = self.classes.User
sess = create_session()
q = (
sess.query(User)
.order_by(User.id)
.offset(literal_column("2") + literal_column("3"))
)
self.assert_sql(
testing.db,
lambda: q[2:5],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id "
"LIMIT :param_1 OFFSET 2 + 3 + :param_2",
[{"param_1": 3, "param_2": 2}],
)
],
)
def test_full_slice_against_integer_offset(self):
User = self.classes.User
sess = create_session()
q = sess.query(User).order_by(User.id).offset(2)
self.assert_sql(
testing.db,
lambda: q[2:5],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id "
"LIMIT :param_1 OFFSET :param_2",
[{"param_1": 3, "param_2": 4}],
)
],
)
@testing.requires.sql_expression_limit_offset
def test_start_slice_against_expression_offset(self):
User = self.classes.User
sess = create_session()
q = sess.query(User).order_by(User.id).offset(literal_column("2"))
self.assert_sql(
testing.db,
lambda: q[2:],
[
(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.id "
"LIMIT -1 OFFSET 2 + :2_1",
[{"2_1": 2}],
)
],
)
class FilterTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_basic(self):
User = self.classes.User
users = create_session().query(User).all()
eq_([User(id=7), User(id=8), User(id=9), User(id=10)], users)
@testing.requires.offset
def test_limit_offset(self):
User = self.classes.User
sess = create_session()
assert [User(id=8), User(id=9)] == sess.query(User).order_by(
User.id
).limit(2).offset(1).all()
assert [User(id=8), User(id=9)] == list(
sess.query(User).order_by(User.id)[1:3]
)
assert User(id=8) == sess.query(User).order_by(User.id)[1]
assert [] == sess.query(User).order_by(User.id)[3:3]
assert [] == sess.query(User).order_by(User.id)[0:0]
@testing.requires.bound_limit_offset
def test_select_with_bindparam_offset_limit(self):
"""Does a query allow bindparam for the limit?"""
User = self.classes.User
sess = create_session()
q1 = (
sess.query(self.classes.User)
.order_by(self.classes.User.id)
.limit(bindparam("n"))
)
for n in range(1, 4):
result = q1.params(n=n).all()
eq_(len(result), n)
eq_(
sess.query(User)
.order_by(User.id)
.limit(bindparam("limit"))
.offset(bindparam("offset"))
.params(limit=2, offset=1)
.all(),
[User(id=8), User(id=9)],
)
@testing.fails_on(
["mysql", "mariadb"], "doesn't like CAST in the limit clause"
)
@testing.requires.bound_limit_offset
def test_select_with_bindparam_offset_limit_w_cast(self):
User = self.classes.User
sess = create_session()
eq_(
list(
sess.query(User)
.params(a=1, b=3)
.order_by(User.id)[
cast(bindparam("a"), Integer) : cast(
bindparam("b"), Integer
)
]
),
[User(id=8), User(id=9)],
)
@testing.requires.boolean_col_expressions
def test_exists(self):
User = self.classes.User
sess = create_session(testing.db)
assert sess.query(exists().where(User.id == 9)).scalar()
assert not sess.query(exists().where(User.id == 29)).scalar()
def test_one_filter(self):
User = self.classes.User
assert [User(id=8), User(id=9)] == create_session().query(User).filter(
User.name.endswith("ed")
).all()
def test_contains(self):
"""test comparing a collection to an object instance."""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
address = sess.query(Address).get(3)
assert [User(id=8)] == sess.query(User).filter(
User.addresses.contains(address)
).all()
try:
sess.query(User).filter(User.addresses == address)
assert False
except sa_exc.InvalidRequestError:
assert True
assert [User(id=10)] == sess.query(User).filter(
User.addresses == None
).all() # noqa
try:
assert [User(id=7), User(id=9), User(id=10)] == sess.query(
User
).filter(User.addresses != address).all()
assert False
except sa_exc.InvalidRequestError:
assert True
# assert [User(id=7), User(id=9), User(id=10)] ==
# sess.query(User).filter(User.addresses!=address).all()
def test_clause_element_ok(self):
User = self.classes.User
s = Session()
self.assert_compile(
s.query(User).filter(User.addresses),
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users, addresses WHERE users.id = addresses.user_id",
)
def test_unique_binds_join_cond(self):
"""test that binds used when the lazyclause is used in criterion are
unique"""
User, Address = self.classes.User, self.classes.Address
sess = Session()
a1, a2 = sess.query(Address).order_by(Address.id)[0:2]
self.assert_compile(
sess.query(User)
.filter(User.addresses.contains(a1))
.union(sess.query(User).filter(User.addresses.contains(a2))),
"SELECT anon_1.users_id AS anon_1_users_id, anon_1.users_name AS "
"anon_1_users_name FROM (SELECT users.id AS users_id, "
"users.name AS users_name FROM users WHERE users.id = :param_1 "
"UNION SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = :param_2) AS anon_1",
checkparams={"param_1": 7, "param_2": 8},
)
def test_any(self):
# see also HasAnyTest, a newer suite which tests these at the level of
# SQL compilation
User, Address = self.classes.User, self.classes.Address
sess = create_session()
assert [User(id=8), User(id=9)] == sess.query(User).filter(
User.addresses.any(Address.email_address.like("%ed%"))
).all()
assert [User(id=8)] == sess.query(User).filter(
User.addresses.any(Address.email_address.like("%ed%"), id=4)
).all()
assert [User(id=8)] == sess.query(User).filter(
User.addresses.any(Address.email_address.like("%ed%"))
).filter(User.addresses.any(id=4)).all()
assert [User(id=9)] == sess.query(User).filter(
User.addresses.any(email_address="fred@fred.com")
).all()
# test that the contents are not adapted by the aliased join
ua = aliased(Address)
assert (
[User(id=7), User(id=8)]
== sess.query(User)
.join(ua, "addresses")
.filter(
~User.addresses.any(Address.email_address == "fred@fred.com")
)
.all()
)
assert [User(id=10)] == sess.query(User).outerjoin(
ua, "addresses"
).filter(~User.addresses.any()).all()
def test_any_doesnt_overcorrelate(self):
# see also HasAnyTest, a newer suite which tests these at the level of
# SQL compilation
User, Address = self.classes.User, self.classes.Address
sess = create_session()
# test that any() doesn't overcorrelate
assert (
[User(id=7), User(id=8)]
== sess.query(User)
.join("addresses")
.filter(
~User.addresses.any(Address.email_address == "fred@fred.com")
)
.all()
)
def test_has(self):
# see also HasAnyTest, a newer suite which tests these at the level of
# SQL compilation
Dingaling, User, Address = (
self.classes.Dingaling,
self.classes.User,
self.classes.Address,
)
sess = create_session()
assert [Address(id=5)] == sess.query(Address).filter(
Address.user.has(name="fred")
).all()
assert (
[Address(id=2), Address(id=3), Address(id=4), Address(id=5)]
== sess.query(Address)
.filter(Address.user.has(User.name.like("%ed%")))
.order_by(Address.id)
.all()
)
assert (
[Address(id=2), Address(id=3), Address(id=4)]
== sess.query(Address)
.filter(Address.user.has(User.name.like("%ed%"), id=8))
.order_by(Address.id)
.all()
)
# test has() doesn't overcorrelate
assert (
[Address(id=2), Address(id=3), Address(id=4)]
== sess.query(Address)
.join("user")
.filter(Address.user.has(User.name.like("%ed%"), id=8))
.order_by(Address.id)
.all()
)
# test has() doesn't get subquery contents adapted by aliased join
ua = aliased(User)
assert (
[Address(id=2), Address(id=3), Address(id=4)]
== sess.query(Address)
.join(ua, "user")
.filter(Address.user.has(User.name.like("%ed%"), id=8))
.order_by(Address.id)
.all()
)
dingaling = sess.query(Dingaling).get(2)
assert [User(id=9)] == sess.query(User).filter(
User.addresses.any(Address.dingaling == dingaling)
).all()
def test_contains_m2m(self):
Item, Order = self.classes.Item, self.classes.Order
sess = create_session()
item = sess.query(Item).get(3)
eq_(
sess.query(Order)
.filter(Order.items.contains(item))
.order_by(Order.id)
.all(),
[Order(id=1), Order(id=2), Order(id=3)],
)
eq_(
sess.query(Order)
.filter(~Order.items.contains(item))
.order_by(Order.id)
.all(),
[Order(id=4), Order(id=5)],
)
item2 = sess.query(Item).get(5)
eq_(
sess.query(Order)
.filter(Order.items.contains(item))
.filter(Order.items.contains(item2))
.all(),
[Order(id=3)],
)
@testing.combinations(
lambda sess, User, Address: (
sess.query(Address).filter(
Address.user == sess.query(User).scalar_subquery()
)
),
lambda sess, User, Address: (
sess.query(Address).filter_by(
user=sess.query(User).scalar_subquery()
)
),
lambda sess, User, Address: (
sess.query(Address).filter(Address.user == sess.query(User))
),
lambda sess, User, Address: (
sess.query(Address).filter(
Address.user == sess.query(User).subquery()
)
),
lambda sess, User, Address: (
sess.query(Address).filter_by(user="foo")
),
)
def test_object_comparison_needs_object(self, fn):
User, Address = (
self.classes.User,
self.classes.Address,
)
sess = create_session()
assert_raises_message(
sa.exc.ArgumentError,
"Mapped instance expected for relationship comparison to object.",
fn,
sess,
User,
Address,
),
def test_object_comparison(self):
"""test scalar comparison to an object instance"""
Item, Order, Dingaling, User, Address = (
self.classes.Item,
self.classes.Order,
self.classes.Dingaling,
self.classes.User,
self.classes.Address,
)
sess = create_session()
user = sess.query(User).get(8)
assert [Address(id=2), Address(id=3), Address(id=4)] == sess.query(
Address
).filter(Address.user == user).all()
assert [Address(id=1), Address(id=5)] == sess.query(Address).filter(
Address.user != user
).all()
# generates an IS NULL
assert (
[] == sess.query(Address).filter(Address.user == None).all()
) # noqa
assert [] == sess.query(Address).filter(Address.user == null()).all()
assert [Order(id=5)] == sess.query(Order).filter(
Order.address == None
).all() # noqa
# o2o
dingaling = sess.query(Dingaling).get(2)
assert [Address(id=5)] == sess.query(Address).filter(
Address.dingaling == dingaling
).all()
# m2m
eq_(
sess.query(Item)
.filter(Item.keywords == None)
.order_by(Item.id) # noqa
.all(),
[Item(id=4), Item(id=5)],
)
eq_(
sess.query(Item)
.filter(Item.keywords != None)
.order_by(Item.id) # noqa
.all(),
[Item(id=1), Item(id=2), Item(id=3)],
)
def test_filter_by(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
user = sess.query(User).get(8)
assert [Address(id=2), Address(id=3), Address(id=4)] == sess.query(
Address
).filter_by(user=user).all()
# many to one generates IS NULL
assert [] == sess.query(Address).filter_by(user=None).all()
assert [] == sess.query(Address).filter_by(user=null()).all()
# one to many generates WHERE NOT EXISTS
assert [User(name="chuck")] == sess.query(User).filter_by(
addresses=None
).all()
assert [User(name="chuck")] == sess.query(User).filter_by(
addresses=null()
).all()
def test_filter_by_tables(self):
users = self.tables.users
addresses = self.tables.addresses
sess = create_session()
self.assert_compile(
sess.query(users)
.filter_by(name="ed")
.join(addresses, users.c.id == addresses.c.user_id)
.filter_by(email_address="ed@ed.com"),
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users JOIN addresses ON users.id = addresses.user_id "
"WHERE users.name = :name_1 AND "
"addresses.email_address = :email_address_1",
checkparams={"email_address_1": "ed@ed.com", "name_1": "ed"},
)
def test_empty_filters(self):
User = self.classes.User
sess = create_session()
q1 = sess.query(User)
is_(None, q1.filter().whereclause)
is_(None, q1.filter_by().whereclause)
def test_filter_by_no_property(self):
addresses = self.tables.addresses
sess = create_session()
assert_raises_message(
sa.exc.InvalidRequestError,
'Entity namespace for "addresses" has no property "name"',
sess.query(addresses).filter_by,
name="ed",
)
def test_none_comparison(self):
Order, User, Address = (
self.classes.Order,
self.classes.User,
self.classes.Address,
)
sess = create_session()
# scalar
eq_(
[Order(description="order 5")],
sess.query(Order).filter(Order.address_id == None).all(), # noqa
)
eq_(
[Order(description="order 5")],
sess.query(Order).filter(Order.address_id == null()).all(),
)
# o2o
eq_(
[Address(id=1), Address(id=3), Address(id=4)],
sess.query(Address)
.filter(Address.dingaling == None)
.order_by(Address.id) # noqa
.all(),
)
eq_(
[Address(id=1), Address(id=3), Address(id=4)],
sess.query(Address)
.filter(Address.dingaling == null())
.order_by(Address.id)
.all(),
)
eq_(
[Address(id=2), Address(id=5)],
sess.query(Address)
.filter(Address.dingaling != None)
.order_by(Address.id) # noqa
.all(),
)
eq_(
[Address(id=2), Address(id=5)],
sess.query(Address)
.filter(Address.dingaling != null())
.order_by(Address.id)
.all(),
)
# m2o
eq_(
[Order(id=5)],
sess.query(Order).filter(Order.address == None).all(),
) # noqa
eq_(
[Order(id=1), Order(id=2), Order(id=3), Order(id=4)],
sess.query(Order)
.order_by(Order.id)
.filter(Order.address != None)
.all(),
) # noqa
# o2m
eq_(
[User(id=10)],
sess.query(User).filter(User.addresses == None).all(),
) # noqa
eq_(
[User(id=7), User(id=8), User(id=9)],
sess.query(User)
.filter(User.addresses != None)
.order_by(User.id) # noqa
.all(),
)
def test_blank_filter_by(self):
User = self.classes.User
eq_(
[(7,), (8,), (9,), (10,)],
create_session()
.query(User.id)
.filter_by()
.order_by(User.id)
.all(),
)
eq_(
[(7,), (8,), (9,), (10,)],
create_session()
.query(User.id)
.filter_by(**{})
.order_by(User.id)
.all(),
)
def test_text_coerce(self):
User = self.classes.User
s = create_session()
self.assert_compile(
s.query(User).filter(text("name='ed'")),
"SELECT users.id AS users_id, users.name "
"AS users_name FROM users WHERE name='ed'",
)
def test_filter_by_non_entity(self):
s = create_session()
e = sa.func.count(123)
assert_raises_message(
sa_exc.InvalidRequestError,
r'Entity namespace for "count\(\:count_1\)" has no property "col"',
s.query(e).filter_by,
col=42,
)
class HasAnyTest(fixtures.DeclarativeMappedTest, AssertsCompiledSQL):
__dialect__ = "default"
@classmethod
def setup_classes(cls):
Base = cls.DeclarativeBasic
class D(Base):
__tablename__ = "d"
id = Column(Integer, primary_key=True)
class C(Base):
__tablename__ = "c"
id = Column(Integer, primary_key=True)
d_id = Column(ForeignKey(D.id))
bs = relationship("B", back_populates="c")
b_d = Table(
"b_d",
Base.metadata,
Column("bid", ForeignKey("b.id")),
Column("did", ForeignKey("d.id")),
)
# note we are using the ForeignKey pattern identified as a bug
# in [ticket:4367]
class B(Base):
__tablename__ = "b"
id = Column(Integer, primary_key=True)
c_id = Column(ForeignKey(C.id))
c = relationship("C", back_populates="bs")
d = relationship("D", secondary=b_d)
class A(Base):
__tablename__ = "a"
id = Column(Integer, primary_key=True)
b_id = Column(ForeignKey(B.id))
d = relationship(
"D",
secondary="join(B, C)",
primaryjoin="A.b_id == B.id",
secondaryjoin="C.d_id == D.id",
uselist=False,
)
def test_has_composite_secondary(self):
A, D = self.classes("A", "D")
s = Session()
self.assert_compile(
s.query(A).filter(A.d.has(D.id == 1)),
"SELECT a.id AS a_id, a.b_id AS a_b_id FROM a WHERE EXISTS "
"(SELECT 1 FROM d, b JOIN c ON c.id = b.c_id "
"WHERE a.b_id = b.id AND c.d_id = d.id AND d.id = :id_1)",
)
def test_has_many_to_one(self):
B, C = self.classes("B", "C")
s = Session()
self.assert_compile(
s.query(B).filter(B.c.has(C.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id FROM b WHERE "
"EXISTS (SELECT 1 FROM c WHERE c.id = b.c_id AND c.id = :id_1)",
)
def test_any_many_to_many(self):
B, D = self.classes("B", "D")
s = Session()
self.assert_compile(
s.query(B).filter(B.d.any(D.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id FROM b WHERE "
"EXISTS (SELECT 1 FROM b_d, d WHERE b.id = b_d.bid "
"AND d.id = b_d.did AND d.id = :id_1)",
)
def test_any_one_to_many(self):
B, C = self.classes("B", "C")
s = Session()
self.assert_compile(
s.query(C).filter(C.bs.any(B.id == 1)),
"SELECT c.id AS c_id, c.d_id AS c_d_id FROM c WHERE "
"EXISTS (SELECT 1 FROM b WHERE c.id = b.c_id AND b.id = :id_1)",
)
def test_any_many_to_many_doesnt_overcorrelate(self):
B, D = self.classes("B", "D")
s = Session()
self.assert_compile(
s.query(B).join(B.d).filter(B.d.any(D.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id FROM "
"b JOIN b_d AS b_d_1 ON b.id = b_d_1.bid "
"JOIN d ON d.id = b_d_1.did WHERE "
"EXISTS (SELECT 1 FROM b_d, d WHERE b.id = b_d.bid "
"AND d.id = b_d.did AND d.id = :id_1)",
)
def test_has_doesnt_overcorrelate(self):
B, C = self.classes("B", "C")
s = Session()
self.assert_compile(
s.query(B).join(B.c).filter(B.c.has(C.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id "
"FROM b JOIN c ON c.id = b.c_id "
"WHERE EXISTS "
"(SELECT 1 FROM c WHERE c.id = b.c_id AND c.id = :id_1)",
)
def test_has_doesnt_get_aliased_join_subq(self):
B, C = self.classes("B", "C")
s = Session()
ca = aliased(C)
self.assert_compile(
s.query(B).join(ca, B.c).filter(B.c.has(C.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id "
"FROM b JOIN c AS c_1 ON c_1.id = b.c_id "
"WHERE EXISTS "
"(SELECT 1 FROM c WHERE c.id = b.c_id AND c.id = :id_1)",
)
def test_any_many_to_many_doesnt_get_aliased_join_subq(self):
B, D = self.classes("B", "D")
s = Session()
da = aliased(D)
self.assert_compile(
s.query(B).join(da, B.d).filter(B.d.any(D.id == 1)),
"SELECT b.id AS b_id, b.c_id AS b_c_id "
"FROM b JOIN b_d AS b_d_1 ON b.id = b_d_1.bid "
"JOIN d AS d_1 ON d_1.id = b_d_1.did "
"WHERE EXISTS "
"(SELECT 1 FROM b_d, d WHERE b.id = b_d.bid "
"AND d.id = b_d.did AND d.id = :id_1)",
)
class HasMapperEntitiesTest(QueryTest):
def test_entity(self):
User = self.classes.User
s = Session()
q = s.query(User)
assert q._compile_state()._has_mapper_entities
def test_cols(self):
User = self.classes.User
s = Session()
q = s.query(User.id)
assert not q._compile_state()._has_mapper_entities
def test_cols_set_entities(self):
User = self.classes.User
s = Session()
q = s.query(User.id)
q._set_entities(User)
assert q._compile_state()._has_mapper_entities
def test_entity_set_entities(self):
User = self.classes.User
s = Session()
q = s.query(User)
q._set_entities(User.id)
assert not q._compile_state()._has_mapper_entities
class SetOpsTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_union(self):
User = self.classes.User
s = create_session()
fred = s.query(User).filter(User.name == "fred")
ed = s.query(User).filter(User.name == "ed")
jack = s.query(User).filter(User.name == "jack")
eq_(
fred.union(ed).order_by(User.name).all(),
[User(name="ed"), User(name="fred")],
)
eq_(
fred.union(ed, jack).order_by(User.name).all(),
[User(name="ed"), User(name="fred"), User(name="jack")],
)
eq_(
fred.union(ed).union(jack).order_by(User.name).all(),
[User(name="ed"), User(name="fred"), User(name="jack")],
)
def test_statement_labels(self):
"""test that label conflicts don't occur with joins etc."""
User, Address = self.classes.User, self.classes.Address
s = create_session()
q1 = (
s.query(User, Address)
.join(User.addresses)
.filter(Address.email_address == "ed@wood.com")
)
q2 = (
s.query(User, Address)
.join(User.addresses)
.filter(Address.email_address == "jack@bean.com")
)
q3 = q1.union(q2).order_by(User.name)
eq_(
q3.all(),
[
(User(name="ed"), Address(email_address="ed@wood.com")),
(User(name="jack"), Address(email_address="jack@bean.com")),
],
)
def test_union_literal_expressions_compile(self):
"""test that column expressions translate during
the _from_statement() portion of union(), others"""
User = self.classes.User
s = Session()
q1 = s.query(User, literal("x"))
q2 = s.query(User, literal_column("'y'"))
q3 = q1.union(q2)
self.assert_compile(
q3,
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"anon_1.anon_2 AS anon_1_anon_2 FROM "
"(SELECT users.id AS users_id, users.name AS users_name, "
":param_1 AS anon_2 FROM users "
"UNION SELECT users.id AS users_id, users.name AS users_name, "
"'y' FROM users) AS anon_1",
)
def test_union_literal_expressions_results(self):
User = self.classes.User
s = Session()
x_literal = literal("x")
q1 = s.query(User, x_literal)
q2 = s.query(User, literal_column("'y'"))
q3 = q1.union(q2)
q4 = s.query(User, literal_column("'x'").label("foo"))
q5 = s.query(User, literal("y"))
q6 = q4.union(q5)
eq_([x["name"] for x in q6.column_descriptions], ["User", "foo"])
for q in (
q3.order_by(User.id, x_literal),
q6.order_by(User.id, "foo"),
):
eq_(
q.all(),
[
(User(id=7, name="jack"), "x"),
(User(id=7, name="jack"), "y"),
(User(id=8, name="ed"), "x"),
(User(id=8, name="ed"), "y"),
(User(id=9, name="fred"), "x"),
(User(id=9, name="fred"), "y"),
(User(id=10, name="chuck"), "x"),
(User(id=10, name="chuck"), "y"),
],
)
def test_union_labeled_anonymous_columns(self):
User = self.classes.User
s = Session()
c1, c2 = column("c1"), column("c2")
q1 = s.query(User, c1.label("foo"), c1.label("bar"))
q2 = s.query(User, c1.label("foo"), c2.label("bar"))
q3 = q1.union(q2)
eq_(
[x["name"] for x in q3.column_descriptions], ["User", "foo", "bar"]
)
self.assert_compile(
q3,
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"anon_1.foo AS anon_1_foo, anon_1.bar AS anon_1_bar "
"FROM (SELECT users.id AS users_id, users.name AS users_name, "
"c1 AS foo, c1 AS bar FROM users UNION SELECT users.id AS "
"users_id, users.name AS users_name, c1 AS foo, c2 AS bar "
"FROM users) AS anon_1",
)
def test_order_by_anonymous_col(self):
User = self.classes.User
s = Session()
c1, c2 = column("c1"), column("c2")
f = c1.label("foo")
q1 = s.query(User, f, c2.label("bar"))
q2 = s.query(User, c1.label("foo"), c2.label("bar"))
q3 = q1.union(q2)
self.assert_compile(
q3.order_by(c1),
"SELECT anon_1.users_id AS anon_1_users_id, anon_1.users_name AS "
"anon_1_users_name, anon_1.foo AS anon_1_foo, anon_1.bar AS "
"anon_1_bar FROM (SELECT users.id AS users_id, users.name AS "
"users_name, c1 AS foo, c2 AS bar "
"FROM users UNION SELECT users.id "
"AS users_id, users.name AS users_name, c1 AS foo, c2 AS bar "
"FROM users) AS anon_1 ORDER BY anon_1.foo",
)
self.assert_compile(
q3.order_by(f),
"SELECT anon_1.users_id AS anon_1_users_id, anon_1.users_name AS "
"anon_1_users_name, anon_1.foo AS anon_1_foo, anon_1.bar AS "
"anon_1_bar FROM (SELECT users.id AS users_id, users.name AS "
"users_name, c1 AS foo, c2 AS bar "
"FROM users UNION SELECT users.id "
"AS users_id, users.name AS users_name, c1 AS foo, c2 AS bar "
"FROM users) AS anon_1 ORDER BY anon_1.foo",
)
def test_union_mapped_colnames_preserved_across_subquery(self):
User = self.classes.User
s = Session()
q1 = s.query(User.name)
q2 = s.query(User.name)
# the label names in the subquery are the typical anonymized ones
self.assert_compile(
q1.union(q2),
"SELECT anon_1.users_name AS anon_1_users_name "
"FROM (SELECT users.name AS users_name FROM users "
"UNION SELECT users.name AS users_name FROM users) AS anon_1",
)
# but in the returned named tuples,
# due to [ticket:1942], this should be 'name', not 'users_name'
eq_([x["name"] for x in q1.union(q2).column_descriptions], ["name"])
@testing.requires.intersect
def test_intersect(self):
User = self.classes.User
s = create_session()
fred = s.query(User).filter(User.name == "fred")
ed = s.query(User).filter(User.name == "ed")
jack = s.query(User).filter(User.name == "jack")
eq_(fred.intersect(ed, jack).all(), [])
eq_(fred.union(ed).intersect(ed.union(jack)).all(), [User(name="ed")])
def test_eager_load(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
fred = s.query(User).filter(User.name == "fred")
ed = s.query(User).filter(User.name == "ed")
def go():
eq_(
fred.union(ed)
.order_by(User.name)
.options(joinedload(User.addresses))
.all(),
[
User(
name="ed", addresses=[Address(), Address(), Address()]
),
User(name="fred", addresses=[Address()]),
],
)
self.assert_sql_count(testing.db, go, 1)
class AggregateTest(QueryTest):
def test_sum(self):
Order = self.classes.Order
sess = create_session()
orders = sess.query(Order).filter(Order.id.in_([2, 3, 4]))
eq_(
orders.with_entities(
func.sum(Order.user_id * Order.address_id)
).scalar(),
79,
)
def test_apply(self):
Order = self.classes.Order
sess = create_session()
assert sess.query(func.sum(Order.user_id * Order.address_id)).filter(
Order.id.in_([2, 3, 4])
).one() == (79,)
def test_having(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
assert (
[User(name="ed", id=8)]
== sess.query(User)
.order_by(User.id)
.group_by(User)
.join("addresses")
.having(func.count(Address.id) > 2)
.all()
)
assert (
[User(name="jack", id=7), User(name="fred", id=9)]
== sess.query(User)
.order_by(User.id)
.group_by(User)
.join("addresses")
.having(func.count(Address.id) < 2)
.all()
)
class ExistsTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_exists(self):
User = self.classes.User
sess = create_session()
q1 = sess.query(User)
self.assert_compile(
sess.query(q1.exists()),
"SELECT EXISTS (" "SELECT 1 FROM users" ") AS anon_1",
)
q2 = sess.query(User).filter(User.name == "fred")
self.assert_compile(
sess.query(q2.exists()),
"SELECT EXISTS ("
"SELECT 1 FROM users WHERE users.name = :name_1"
") AS anon_1",
)
def test_exists_col_warning(self):
User = self.classes.User
Address = self.classes.Address
sess = create_session()
q1 = sess.query(User, Address).filter(User.id == Address.user_id)
self.assert_compile(
sess.query(q1.exists()),
"SELECT EXISTS ("
"SELECT 1 FROM users, addresses "
"WHERE users.id = addresses.user_id"
") AS anon_1",
)
def test_exists_w_select_from(self):
User = self.classes.User
sess = create_session()
q1 = sess.query().select_from(User).exists()
self.assert_compile(
sess.query(q1), "SELECT EXISTS (SELECT 1 FROM users) AS anon_1"
)
class CountTest(QueryTest):
def test_basic(self):
users, User = self.tables.users, self.classes.User
s = create_session()
eq_(s.query(User).count(), 4)
eq_(s.query(User).filter(users.c.name.endswith("ed")).count(), 2)
def test_basic_future(self):
User = self.classes.User
s = create_session()
eq_(
s.execute(select(func.count()).select_from(User)).scalar(), 4,
)
eq_(
s.execute(
select(func.count()).filter(User.name.endswith("ed"))
).scalar(),
2,
)
def test_count_char(self):
User = self.classes.User
s = create_session()
# '*' is favored here as the most common character,
# it is reported that Informix doesn't like count(1),
# rumors about Oracle preferring count(1) don't appear
# to be well founded.
self.assert_sql_execution(
testing.db,
s.query(User).count,
CompiledSQL(
"SELECT count(*) AS count_1 FROM "
"(SELECT users.id AS users_id, users.name "
"AS users_name FROM users) AS anon_1",
{},
),
)
def test_multiple_entity(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(User, Address).join(Address, true())
eq_(q.count(), 20) # cartesian product
q = s.query(User, Address).join(User.addresses)
eq_(q.count(), 5)
def test_multiple_entity_future(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
stmt = select(User, Address).join(Address, true())
stmt = select(func.count()).select_from(stmt.subquery())
eq_(s.scalar(stmt), 20) # cartesian product
stmt = select(User, Address).join(Address)
stmt = select(func.count()).select_from(stmt.subquery())
eq_(s.scalar(stmt), 5)
def test_nested(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(User, Address).join(Address, true()).limit(2)
eq_(q.count(), 2)
q = s.query(User, Address).join(Address, true()).limit(100)
eq_(q.count(), 20)
q = s.query(User, Address).join(User.addresses).limit(100)
eq_(q.count(), 5)
def test_nested_future(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
stmt = select(User, Address).join(Address, true()).limit(2)
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 2,
)
stmt = select(User, Address).join(Address, true()).limit(100)
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 20,
)
stmt = select(User, Address).join(Address).limit(100)
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 5,
)
def test_cols(self):
"""test that column-based queries always nest."""
User, Address = self.classes.User, self.classes.Address
s = create_session()
q = s.query(func.count(distinct(User.name)))
eq_(q.count(), 1)
q = s.query(func.count(distinct(User.name))).distinct()
eq_(q.count(), 1)
q = s.query(User.name)
eq_(q.count(), 4)
q = s.query(User.name, Address).join(Address, true())
eq_(q.count(), 20)
q = s.query(Address.user_id)
eq_(q.count(), 5)
eq_(q.distinct().count(), 3)
def test_cols_future(self):
User, Address = self.classes.User, self.classes.Address
s = create_session()
stmt = select(func.count(distinct(User.name)))
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 1,
)
stmt = select(func.count(distinct(User.name))).distinct()
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 1,
)
stmt = select(User.name)
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 4,
)
stmt = select(User.name, Address).join(Address, true())
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 20,
)
stmt = select(Address.user_id)
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 5,
)
stmt = stmt.distinct()
eq_(
s.scalar(select(func.count()).select_from(stmt.subquery())), 3,
)
class DistinctTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_basic(self):
User = self.classes.User
eq_(
[User(id=7), User(id=8), User(id=9), User(id=10)],
create_session().query(User).order_by(User.id).distinct().all(),
)
eq_(
[User(id=7), User(id=9), User(id=8), User(id=10)],
create_session()
.query(User)
.distinct()
.order_by(desc(User.name))
.all(),
)
def test_no_automatic_distinct_thing_w_future(self):
User = self.classes.User
stmt = select(User.id).order_by(User.name).distinct()
self.assert_compile(
stmt, "SELECT DISTINCT users.id FROM users ORDER BY users.name"
)
def test_issue_5470_one(self):
User = self.classes.User
expr = (User.id.op("+")(2)).label("label")
sess = create_session()
q = sess.query(expr).select_from(User).order_by(desc(expr)).distinct()
# no double col in the select list,
# orders by the label
self.assert_compile(
q,
"SELECT DISTINCT users.id + :id_1 AS label "
"FROM users ORDER BY label DESC",
)
def test_issue_5470_two(self):
User = self.classes.User
expr = User.id + literal(1)
sess = create_session()
q = sess.query(expr).select_from(User).order_by(asc(expr)).distinct()
# no double col in the select list,
# there's no label so this is the requested SQL
self.assert_compile(
q,
"SELECT DISTINCT users.id + :param_1 AS anon_1 "
"FROM users ORDER BY users.id + :param_1 ASC",
)
def test_issue_5470_three(self):
User = self.classes.User
expr = (User.id + literal(1)).label("label")
sess = create_session()
q = sess.query(expr).select_from(User).order_by(asc(expr)).distinct()
# no double col in the select list,
# orders by the label
self.assert_compile(
q,
"SELECT DISTINCT users.id + :param_1 AS label "
"FROM users ORDER BY label ASC",
)
def test_issue_5470_four(self):
User = self.classes.User
expr = (User.id + literal(1)).label("label")
sess = create_session()
q = (
sess.query(expr)
.select_from(User)
.order_by(asc("label"))
.distinct()
)
# no double col in the select list,
# orders by the label
self.assert_compile(
q,
"SELECT DISTINCT users.id + :param_1 AS label "
"FROM users ORDER BY label ASC",
)
def test_issue_5470_five(self):
User = self.classes.User
expr = (User.id.op("+")(2)).label("label")
stmt = select(expr).select_from(User).order_by(desc(expr)).distinct()
# no double col in the select list,
# orders by the label
self.assert_compile(
stmt,
"SELECT DISTINCT users.id + :id_1 AS label "
"FROM users ORDER BY label DESC",
)
def test_columns_augmented_roundtrip_one_from_self(self):
"""Test workaround for legacy style DISTINCT on extra column.
See #5134
"""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User, Address.email_address)
.join("addresses")
.distinct()
.from_self(User)
.order_by(desc(Address.email_address))
)
eq_([User(id=7), User(id=9), User(id=8)], q.all())
def test_columns_augmented_roundtrip_one_aliased(self):
"""Test workaround for legacy style DISTINCT on extra column,
but also without using from_self().
See #5134
"""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User, Address.email_address)
.join("addresses")
.distinct()
)
subq = q.subquery()
entity = aliased(User, subq)
q = sess.query(entity).order_by(subq.c.email_address.desc())
eq_([User(id=7), User(id=9), User(id=8)], q.all())
def test_columns_augmented_roundtrip_two(self):
"""Test workaround for legacy style DISTINCT on extra column.
See #5134
"""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
# test that it works on embedded joinedload/LIMIT subquery
q = (
sess.query(User)
.join("addresses")
.distinct()
.options(joinedload("addresses"))
.order_by(desc(Address.email_address))
.limit(2)
)
def go():
assert [
User(id=7, addresses=[Address(id=1)]),
User(id=9, addresses=[Address(id=5)]),
] == q.all()
self.assert_sql_count(testing.db, go, 1)
def test_columns_augmented_roundtrip_three_from_self(self):
"""Test workaround for legacy style DISTINCT on extra column.
See #5134
"""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(
User.id,
User.name.label("foo"),
Address.id,
Address.email_address,
)
.join(Address, true())
.filter(User.name == "jack")
.filter(User.id + Address.user_id > 0)
.distinct()
.from_self(User.id, User.name.label("foo"), Address.id)
.order_by(User.id, User.name, Address.email_address)
)
eq_(
q.all(),
[
(7, "jack", 3),
(7, "jack", 4),
(7, "jack", 2),
(7, "jack", 5),
(7, "jack", 1),
],
)
for row in q:
eq_(row._mapping.keys(), ["id", "foo", "id"])
def test_columns_augmented_roundtrip_three_aliased(self):
"""Test workaround for legacy style DISTINCT on extra column,
but also without using from_self().
See #5134
"""
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(
User.id,
User.name.label("foo"),
Address.id,
Address.email_address,
)
.join(Address, true())
.filter(User.name == "jack")
.filter(User.id + Address.user_id > 0)
.distinct()
)
subq = q.subquery()
# note this is a bit cutting edge; two differnet entities against
# the same subquery.
uentity = aliased(User, subq)
aentity = aliased(Address, subq)
q = sess.query(
uentity.id, uentity.name.label("foo"), aentity.id
).order_by(uentity.id, uentity.name, aentity.email_address)
eq_(
q.all(),
[
(7, "jack", 3),
(7, "jack", 4),
(7, "jack", 2),
(7, "jack", 5),
(7, "jack", 1),
],
)
def test_columns_augmented_sql_one(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(
User.id,
User.name.label("foo"),
Address.id,
Address.email_address,
)
.distinct()
.order_by(User.id, User.name, Address.email_address)
.from_self(User.id, User.name.label("foo"), Address.id)
)
# Address.email_address is added because of DISTINCT,
# however User.id, User.name are not b.c. they're already there,
# even though User.name is labeled
self.assert_compile(
q,
"SELECT anon_1.users_id AS anon_1_users_id, anon_1.foo AS foo, "
"anon_1.addresses_id AS anon_1_addresses_id "
"FROM ("
"SELECT DISTINCT users.id AS users_id, users.name AS foo, "
"addresses.id AS addresses_id, addresses.email_address AS "
"addresses_email_address FROM users, addresses ORDER BY "
"users.id, users.name, addresses.email_address"
") AS anon_1",
)
def test_columns_augmented_sql_union_one(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(
User.id,
User.name.label("foo"),
Address.id,
Address.email_address,
)
.distinct()
.order_by(User.id, User.name, Address.email_address)
)
q2 = sess.query(
User.id, User.name.label("foo"), Address.id, Address.email_address,
)
self.assert_compile(
q.union(q2),
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.foo AS anon_1_foo, anon_1.addresses_id AS "
"anon_1_addresses_id, anon_1.addresses_email_address AS "
"anon_1_addresses_email_address FROM "
"((SELECT DISTINCT users.id AS users_id, users.name AS foo, "
"addresses.id AS addresses_id, addresses.email_address "
"AS addresses_email_address FROM users, addresses "
"ORDER BY users.id, users.name, addresses.email_address) "
"UNION SELECT users.id AS users_id, users.name AS foo, "
"addresses.id AS addresses_id, addresses.email_address AS "
"addresses_email_address FROM users, addresses) AS anon_1",
)
def test_columns_augmented_sql_union_two(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User.id, User.name.label("foo"), Address.id,)
.distinct(Address.email_address)
.order_by(User.id, User.name)
)
q2 = sess.query(User.id, User.name.label("foo"), Address.id)
self.assert_compile(
q.union(q2),
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.foo AS anon_1_foo, anon_1.addresses_id AS "
"anon_1_addresses_id FROM "
"((SELECT DISTINCT ON (addresses.email_address) users.id "
"AS users_id, users.name AS foo, "
"addresses.id AS addresses_id FROM users, addresses "
"ORDER BY users.id, users.name) "
"UNION SELECT users.id AS users_id, users.name AS foo, "
"addresses.id AS addresses_id FROM users, addresses) AS anon_1",
dialect="postgresql",
)
def test_columns_augmented_sql_two(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User)
.options(joinedload(User.addresses))
.distinct()
.order_by(User.name, Address.email_address)
.limit(5)
)
# addresses.email_address is added to inner query so that
# it is available in ORDER BY
self.assert_compile(
q,
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"anon_1.addresses_email_address AS "
"anon_1_addresses_email_address, "
"addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM (SELECT DISTINCT users.id AS users_id, "
"users.name AS users_name, "
"addresses.email_address AS addresses_email_address "
"FROM users, addresses "
"ORDER BY users.name, addresses.email_address "
"LIMIT :param_1) AS anon_1 LEFT OUTER JOIN "
"addresses AS addresses_1 "
"ON anon_1.users_id = addresses_1.user_id "
"ORDER BY anon_1.users_name, "
"anon_1.addresses_email_address, addresses_1.id",
)
def test_columns_augmented_sql_three(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User.id, User.name.label("foo"), Address.id)
.distinct(User.name)
.order_by(User.id, User.name, Address.email_address)
)
# no columns are added when DISTINCT ON is used
self.assert_compile(
q,
"SELECT DISTINCT ON (users.name) users.id AS users_id, "
"users.name AS foo, addresses.id AS addresses_id FROM users, "
"addresses ORDER BY users.id, users.name, addresses.email_address",
dialect="postgresql",
)
def test_columns_augmented_distinct_on(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(
User.id,
User.name.label("foo"),
Address.id,
Address.email_address,
)
.distinct(Address.email_address)
.order_by(User.id, User.name, Address.email_address)
.from_self(User.id, User.name.label("foo"), Address.id)
)
# Address.email_address is added because of DISTINCT,
# however User.id, User.name are not b.c. they're already there,
# even though User.name is labeled
self.assert_compile(
q,
"SELECT anon_1.users_id AS anon_1_users_id, anon_1.foo AS foo, "
"anon_1.addresses_id AS anon_1_addresses_id "
"FROM ("
"SELECT DISTINCT ON (addresses.email_address) "
"users.id AS users_id, users.name AS foo, "
"addresses.id AS addresses_id, addresses.email_address AS "
"addresses_email_address FROM users, addresses ORDER BY "
"users.id, users.name, addresses.email_address"
") AS anon_1",
dialect="postgresql",
)
def test_columns_augmented_sql_three_using_label_reference(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User.id, User.name.label("foo"), Address.id)
.distinct("name")
.order_by(User.id, User.name, Address.email_address)
)
# no columns are added when DISTINCT ON is used
self.assert_compile(
q,
"SELECT DISTINCT ON (users.name) users.id AS users_id, "
"users.name AS foo, addresses.id AS addresses_id FROM users, "
"addresses ORDER BY users.id, users.name, addresses.email_address",
dialect="postgresql",
)
def test_columns_augmented_sql_illegal_label_reference(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = sess.query(User.id, User.name.label("foo"), Address.id).distinct(
"not a label"
)
from sqlalchemy.dialects import postgresql
assert_raises_message(
sa_exc.CompileError,
"Can't resolve label reference for ORDER BY / "
"GROUP BY / DISTINCT etc.",
q.with_labels().statement.compile,
dialect=postgresql.dialect(),
)
def test_columns_augmented_sql_four(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
q = (
sess.query(User)
.join("addresses")
.distinct(Address.email_address)
.options(joinedload("addresses"))
.order_by(desc(Address.email_address))
.limit(2)
)
# but for the subquery / eager load case, we still need to make
# the inner columns available for the ORDER BY even though its
# a DISTINCT ON
self.assert_compile(
q,
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"anon_1.addresses_email_address AS "
"anon_1_addresses_email_address, "
"addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM (SELECT DISTINCT ON (addresses.email_address) "
"users.id AS users_id, users.name AS users_name, "
"addresses.email_address AS addresses_email_address "
"FROM users JOIN addresses ON users.id = addresses.user_id "
"ORDER BY addresses.email_address DESC "
"LIMIT %(param_1)s) AS anon_1 "
"LEFT OUTER JOIN addresses AS addresses_1 "
"ON anon_1.users_id = addresses_1.user_id "
"ORDER BY anon_1.addresses_email_address DESC, addresses_1.id",
dialect="postgresql",
)
class PrefixSuffixWithTest(QueryTest, AssertsCompiledSQL):
def test_one_prefix(self):
User = self.classes.User
sess = create_session()
query = sess.query(User.name).prefix_with("PREFIX_1")
expected = "SELECT PREFIX_1 " "users.name AS users_name FROM users"
self.assert_compile(query, expected, dialect=default.DefaultDialect())
def test_one_suffix(self):
User = self.classes.User
sess = create_session()
query = sess.query(User.name).suffix_with("SUFFIX_1")
# trailing space for some reason
expected = "SELECT users.name AS users_name FROM users SUFFIX_1 "
self.assert_compile(query, expected, dialect=default.DefaultDialect())
def test_many_prefixes(self):
User = self.classes.User
sess = create_session()
query = sess.query(User.name).prefix_with("PREFIX_1", "PREFIX_2")
expected = (
"SELECT PREFIX_1 PREFIX_2 " "users.name AS users_name FROM users"
)
self.assert_compile(query, expected, dialect=default.DefaultDialect())
def test_chained_prefixes(self):
User = self.classes.User
sess = create_session()
query = (
sess.query(User.name)
.prefix_with("PREFIX_1")
.prefix_with("PREFIX_2", "PREFIX_3")
)
expected = (
"SELECT PREFIX_1 PREFIX_2 PREFIX_3 "
"users.name AS users_name FROM users"
)
self.assert_compile(query, expected, dialect=default.DefaultDialect())
class YieldTest(_fixtures.FixtureTest):
run_setup_mappers = "each"
run_inserts = "each"
def _eagerload_mappings(self, addresses_lazy=True, user_lazy=True):
User, Address = self.classes("User", "Address")
users, addresses = self.tables("users", "addresses")
mapper(
User,
users,
properties={
"addresses": relationship(
Address,
lazy=addresses_lazy,
backref=backref("user", lazy=user_lazy),
)
},
)
mapper(Address, addresses)
def test_basic(self):
self._eagerload_mappings()
User = self.classes.User
sess = create_session()
q = iter(
sess.query(User)
.yield_per(1)
.from_statement(text("select * from users"))
)
ret = []
eq_(len(sess.identity_map), 0)
ret.append(next(q))
ret.append(next(q))
eq_(len(sess.identity_map), 2)
ret.append(next(q))
ret.append(next(q))
eq_(len(sess.identity_map), 4)
try:
next(q)
assert False
except StopIteration:
pass
def test_yield_per_and_execution_options(self):
self._eagerload_mappings()
User = self.classes.User
sess = create_session()
q = sess.query(User).yield_per(15)
q = q.execution_options(foo="bar")
assert q.load_options._yield_per
eq_(
q._execution_options,
{"stream_results": True, "foo": "bar", "max_row_buffer": 15},
)
def test_no_joinedload_opt(self):
self._eagerload_mappings()
User = self.classes.User
sess = create_session()
q = sess.query(User).options(joinedload("addresses")).yield_per(1)
assert_raises_message(
sa_exc.InvalidRequestError,
"Can't use yield_per with eager loaders that require "
"uniquing or row buffering",
q.all,
)
def test_no_subqueryload_opt(self):
self._eagerload_mappings()
User = self.classes.User
sess = create_session()
q = sess.query(User).options(subqueryload("addresses")).yield_per(1)
assert_raises_message(
sa_exc.InvalidRequestError,
"Can't use yield_per with eager loaders that require "
"uniquing or row buffering",
q.all,
)
def test_no_subqueryload_mapping(self):
self._eagerload_mappings(addresses_lazy="subquery")
User = self.classes.User
sess = create_session()
q = sess.query(User).yield_per(1)
assert_raises_message(
sa_exc.InvalidRequestError,
"Can't use yield_per with eager loaders that require "
"uniquing or row buffering",
q.all,
)
def test_joinedload_m2o_ok(self):
self._eagerload_mappings(user_lazy="joined")
Address = self.classes.Address
sess = create_session()
q = sess.query(Address).yield_per(1)
q.all()
def test_eagerload_opt_disable(self):
self._eagerload_mappings()
User = self.classes.User
sess = create_session()
q = (
sess.query(User)
.options(subqueryload("addresses"))
.enable_eagerloads(False)
.yield_per(1)
)
q.all()
q = (
sess.query(User)
.options(joinedload("addresses"))
.enable_eagerloads(False)
.yield_per(1)
)
q.all()
def test_m2o_joinedload_not_others(self):
self._eagerload_mappings(addresses_lazy="joined")
Address = self.classes.Address
sess = create_session()
q = (
sess.query(Address)
.options(lazyload("*"), joinedload("user"))
.yield_per(1)
.filter_by(id=1)
)
def go():
result = q.all()
assert result[0].user
self.assert_sql_count(testing.db, go, 1)
class HintsTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_hints(self):
User = self.classes.User
from sqlalchemy.dialects import mysql
dialect = mysql.dialect()
sess = create_session()
self.assert_compile(
sess.query(User).with_hint(
User, "USE INDEX (col1_index,col2_index)"
),
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users USE INDEX (col1_index,col2_index)",
dialect=dialect,
)
self.assert_compile(
sess.query(User).with_hint(
User, "WITH INDEX col1_index", "sybase"
),
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users",
dialect=dialect,
)
ualias = aliased(User)
self.assert_compile(
sess.query(User, ualias)
.with_hint(ualias, "USE INDEX (col1_index,col2_index)")
.join(ualias, ualias.id > User.id),
"SELECT users.id AS users_id, users.name AS users_name, "
"users_1.id AS users_1_id, users_1.name AS users_1_name "
"FROM users INNER JOIN users AS users_1 "
"USE INDEX (col1_index,col2_index) "
"ON users_1.id > users.id",
dialect=dialect,
)
def test_statement_hints(self):
User = self.classes.User
sess = create_session()
stmt = (
sess.query(User)
.with_statement_hint("test hint one")
.with_statement_hint("test hint two")
.with_statement_hint("test hint three", "postgresql")
)
self.assert_compile(
stmt,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users test hint one test hint two",
)
self.assert_compile(
stmt,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users test hint one test hint two test hint three",
dialect="postgresql",
)
class TextTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_needs_text(self):
User = self.classes.User
assert_raises_message(
sa_exc.ArgumentError,
"Textual SQL expression",
create_session().query(User).from_statement,
"select * from users order by id",
)
def test_select_star(self):
User = self.classes.User
eq_(
create_session()
.query(User)
.from_statement(text("select * from users order by id"))
.first(),
User(id=7),
)
eq_(
create_session()
.query(User)
.from_statement(
text("select * from users where name='nonexistent'")
)
.first(),
None,
)
def test_select_star_future(self):
User = self.classes.User
sess = Session(testing.db)
eq_(
sess.execute(
select(User).from_statement(
text("select * from users order by id")
)
)
.scalars()
.first(),
User(id=7),
)
eq_(
sess.execute(
select(User).from_statement(
text("select * from users where name='nonexistent'")
)
)
.scalars()
.first(),
None,
)
def test_columns_mismatched(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter
User = self.classes.User
s = create_session()
q = s.query(User).from_statement(
text(
"select name, 27 as foo, id as users_id from users order by id"
)
)
eq_(
q.all(),
[
User(id=7, name="jack"),
User(id=8, name="ed"),
User(id=9, name="fred"),
User(id=10, name="chuck"),
],
)
def test_columns_mismatched_future(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter
User = self.classes.User
s = create_session(testing.db)
q = select(User).from_statement(
text(
"select name, 27 as foo, id as users_id from users order by id"
)
)
eq_(
s.execute(q).scalars().all(),
[
User(id=7, name="jack"),
User(id=8, name="ed"),
User(id=9, name="fred"),
User(id=10, name="chuck"),
],
)
def test_columns_multi_table_uselabels(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session()
q = s.query(User, Address).from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
)
)
eq_(
q.all(),
[
(User(id=8), Address(id=2)),
(User(id=8), Address(id=3)),
(User(id=8), Address(id=4)),
],
)
def test_columns_multi_table_uselabels_future(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session(testing.db)
q = select(User, Address).from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
)
)
eq_(
s.execute(q).all(),
[
(User(id=8), Address(id=2)),
(User(id=8), Address(id=3)),
(User(id=8), Address(id=4)),
],
)
def test_columns_multi_table_uselabels_contains_eager(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session()
q = (
s.query(User)
.from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
)
)
.options(contains_eager(User.addresses))
)
def go():
r = q.all()
eq_(r[0].addresses, [Address(id=2), Address(id=3), Address(id=4)])
self.assert_sql_count(testing.db, go, 1)
def test_columns_multi_table_uselabels_contains_eager_future(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session(testing.db)
q = (
select(User)
.from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
)
)
.options(contains_eager(User.addresses))
)
def go():
r = s.execute(q).unique().scalars().all()
eq_(r[0].addresses, [Address(id=2), Address(id=3), Address(id=4)])
self.assert_sql_count(testing.db, go, 1)
def test_columns_multi_table_uselabels_cols_contains_eager(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session()
q = (
s.query(User)
.from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
).columns(User.name, User.id, Address.id)
)
.options(contains_eager(User.addresses))
)
def go():
r = q.all()
eq_(r[0].addresses, [Address(id=2), Address(id=3), Address(id=4)])
self.assert_sql_count(testing.db, go, 1)
def test_columns_multi_table_uselabels_cols_contains_eager_future(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
s = create_session(testing.db)
q = (
select(User)
.from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
).columns(User.name, User.id, Address.id)
)
.options(contains_eager(User.addresses))
)
def go():
r = s.execute(q).unique().scalars().all()
eq_(r[0].addresses, [Address(id=2), Address(id=3), Address(id=4)])
self.assert_sql_count(testing.db, go, 1)
def test_textual_select_orm_columns(self):
# test that columns using column._label match, as well as that
# ordering doesn't matter.
User = self.classes.User
Address = self.classes.Address
users = self.tables.users
addresses = self.tables.addresses
s = create_session()
q = s.query(User.name, User.id, Address.id).from_statement(
text(
"select users.name AS users_name, users.id AS users_id, "
"addresses.id AS addresses_id FROM users JOIN addresses "
"ON users.id = addresses.user_id WHERE users.id=8 "
"ORDER BY addresses.id"
).columns(users.c.name, users.c.id, addresses.c.id)
)
eq_(q.all(), [("ed", 8, 2), ("ed", 8, 3), ("ed", 8, 4)])
@testing.combinations(
(
False,
subqueryload,
# sqlite seems happy to interpret the broken SQL and give you the
# correct result somehow, this is a bug in SQLite so don't rely
# upon it doing that
testing.fails("not working yet") + testing.skip_if("sqlite"),
),
(True, subqueryload, testing.fails("not sure about implementation")),
(False, selectinload),
(True, selectinload),
)
def test_related_eagerload_against_text(self, add_columns, loader_option):
# new in 1.4. textual selects have columns so subqueryloaders
# and selectinloaders can join onto them. we add columns
# automatiacally to TextClause as well, however subqueryloader
# is not working at the moment due to execution model refactor,
# it creates a subquery w/ adapter before those columns are
# available. this is a super edge case and as we want to rewrite
# the loaders to use select(), maybe we can get it then.
User = self.classes.User
text_clause = text("select * from users")
if add_columns:
text_clause = text_clause.columns(User.id, User.name)
s = create_session()
q = (
s.query(User)
.from_statement(text_clause)
.options(loader_option(User.addresses))
)
def go():
eq_(set(q.all()), set(self.static.user_address_result))
self.assert_sql_count(testing.db, go, 2)
def test_whereclause(self):
User = self.classes.User
eq_(
create_session().query(User).filter(text("id in (8, 9)")).all(),
[User(id=8), User(id=9)],
)
eq_(
create_session()
.query(User)
.filter(text("name='fred'"))
.filter(text("id=9"))
.all(),
[User(id=9)],
)
eq_(
create_session()
.query(User)
.filter(text("name='fred'"))
.filter(User.id == 9)
.all(),
[User(id=9)],
)
def test_whereclause_future(self):
User = self.classes.User
s = create_session(testing.db)
eq_(
s.execute(select(User).filter(text("id in (8, 9)")))
.scalars()
.all(),
[User(id=8), User(id=9)],
)
eq_(
s.execute(
select(User).filter(text("name='fred'")).filter(text("id=9"))
)
.scalars()
.all(),
[User(id=9)],
)
eq_(
s.execute(
select(User).filter(text("name='fred'")).filter(User.id == 9)
)
.scalars()
.all(),
[User(id=9)],
)
def test_binds_coerce(self):
User = self.classes.User
assert_raises_message(
sa_exc.ArgumentError,
r"Textual SQL expression 'id in \(:id1, :id2\)' "
"should be explicitly declared",
create_session().query(User).filter,
"id in (:id1, :id2)",
)
def test_plain_textual_column(self):
User = self.classes.User
s = create_session()
self.assert_compile(
s.query(User.id, text("users.name")),
"SELECT users.id AS users_id, users.name FROM users",
)
eq_(
s.query(User.id, text("users.name")).all(),
[(7, "jack"), (8, "ed"), (9, "fred"), (10, "chuck")],
)
eq_(
s.query(User.id, literal_column("name")).order_by(User.id).all(),
[(7, "jack"), (8, "ed"), (9, "fred"), (10, "chuck")],
)
def test_via_select(self):
User = self.classes.User
s = create_session()
eq_(
s.query(User)
.from_statement(
select(column("id"), column("name"))
.select_from(table("users"))
.order_by("id")
)
.all(),
[User(id=7), User(id=8), User(id=9), User(id=10)],
)
def test_via_textasfrom_from_statement(self):
User = self.classes.User
s = create_session()
eq_(
s.query(User)
.from_statement(
text("select * from users order by id").columns(
id=Integer, name=String
)
)
.all(),
[User(id=7), User(id=8), User(id=9), User(id=10)],
)
def test_columns_via_textasfrom_from_statement(self):
User = self.classes.User
s = create_session()
eq_(
s.query(User.id, User.name)
.from_statement(
text("select * from users order by id").columns(
id=Integer, name=String
)
)
.all(),
[(7, "jack"), (8, "ed"), (9, "fred"), (10, "chuck")],
)
def test_via_textasfrom_use_mapped_columns(self):
User = self.classes.User
s = create_session()
eq_(
s.query(User)
.from_statement(
text("select * from users order by id").columns(
User.id, User.name
)
)
.all(),
[User(id=7), User(id=8), User(id=9), User(id=10)],
)
def test_via_textasfrom_select_from(self):
User = self.classes.User
s = create_session()
eq_(
s.query(User)
.select_entity_from(
text("select * from users")
.columns(User.id, User.name)
.subquery()
)
.order_by(User.id)
.all(),
[User(id=7), User(id=8), User(id=9), User(id=10)],
)
def test_group_by_accepts_text(self):
User = self.classes.User
s = create_session()
q = s.query(User).group_by(text("name"))
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users GROUP BY name",
)
def test_orm_columns_accepts_text(self):
from sqlalchemy.orm.base import _orm_columns
t = text("x")
eq_(_orm_columns(t), [t])
def test_order_by_w_eager_one(self):
User = self.classes.User
s = create_session()
# from 1.0.0 thru 1.0.2, the "name" symbol here was considered
# to be part of the things we need to ORDER BY and it was being
# placed into the inner query's columns clause, as part of
# query._compound_eager_statement where we add unwrap_order_by()
# to the columns clause. However, as #3392 illustrates, unlocatable
# string expressions like "name desc" will only fail in this scenario,
# so in general the changing of the query structure with string labels
# is dangerous.
#
# the queries here are again "invalid" from a SQL perspective, as the
# "name" field isn't matched up to anything.
#
q = (
s.query(User)
.options(joinedload("addresses"))
.order_by(desc("name"))
.limit(1)
)
assert_raises_message(
sa_exc.CompileError,
"Can't resolve label reference for ORDER BY / GROUP BY.",
q.with_labels().statement.compile,
)
def test_order_by_w_eager_two(self):
User = self.classes.User
s = create_session()
q = (
s.query(User)
.options(joinedload("addresses"))
.order_by("name")
.limit(1)
)
assert_raises_message(
sa_exc.CompileError,
"Can't resolve label reference for ORDER BY / GROUP BY.",
q.with_labels().statement.compile,
)
def test_order_by_w_eager_three(self):
User = self.classes.User
s = create_session()
self.assert_compile(
s.query(User)
.options(joinedload("addresses"))
.order_by("users_name")
.limit(1),
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM (SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.name "
"LIMIT :param_1) AS anon_1 "
"LEFT OUTER JOIN addresses AS addresses_1 "
"ON anon_1.users_id = addresses_1.user_id "
"ORDER BY anon_1.users_name, addresses_1.id",
)
# however! this works (again?)
eq_(
s.query(User)
.options(joinedload("addresses"))
.order_by("users_name")
.first(),
User(name="chuck", addresses=[]),
)
def test_order_by_w_eager_four(self):
User = self.classes.User
Address = self.classes.Address
s = create_session()
self.assert_compile(
s.query(User)
.options(joinedload("addresses"))
.order_by(desc("users_name"))
.limit(1),
"SELECT anon_1.users_id AS anon_1_users_id, "
"anon_1.users_name AS anon_1_users_name, "
"addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM (SELECT users.id AS users_id, users.name AS users_name "
"FROM users ORDER BY users.name DESC "
"LIMIT :param_1) AS anon_1 "
"LEFT OUTER JOIN addresses AS addresses_1 "
"ON anon_1.users_id = addresses_1.user_id "
"ORDER BY anon_1.users_name DESC, addresses_1.id",
)
# however! this works (again?)
eq_(
s.query(User)
.options(joinedload("addresses"))
.order_by(desc("users_name"))
.first(),
User(name="jack", addresses=[Address()]),
)
def test_order_by_w_eager_five(self):
"""essentially the same as test_eager_relations -> test_limit_3,
but test for textual label elements that are freeform.
this is again #3392."""
User = self.classes.User
Address = self.classes.Address
sess = create_session()
q = sess.query(User, Address.email_address.label("email_address"))
result = (
q.join("addresses")
.options(joinedload(User.orders))
.order_by("email_address desc")
.limit(1)
.offset(0)
)
assert_raises_message(
sa_exc.CompileError,
"Can't resolve label reference for ORDER BY / GROUP BY",
result.all,
)
class TextErrorTest(QueryTest, AssertsCompiledSQL):
def _test(self, fn, arg, offending_clause):
assert_raises_message(
sa.exc.ArgumentError,
r"Textual (?:SQL|column|SQL FROM) expression %(stmt)r should be "
r"explicitly declared (?:with|as) text\(%(stmt)r\)"
% {"stmt": util.ellipses_string(offending_clause)},
fn,
arg,
)
def test_filter(self):
User = self.classes.User
self._test(Session().query(User.id).filter, "myid == 5", "myid == 5")
def test_having(self):
User = self.classes.User
self._test(Session().query(User.id).having, "myid == 5", "myid == 5")
def test_from_statement(self):
User = self.classes.User
self._test(
Session().query(User.id).from_statement,
"select id from user",
"select id from user",
)
class ParentTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
def test_o2m(self):
User, orders, Order = (
self.classes.User,
self.tables.orders,
self.classes.Order,
)
sess = create_session()
q = sess.query(User)
u1 = q.filter_by(name="jack").one()
# test auto-lookup of property
o = sess.query(Order).with_parent(u1).all()
assert [
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
] == o
# test with explicit property
o = sess.query(Order).with_parent(u1, property="orders").all()
assert [
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
] == o
o = sess.query(Order).with_parent(u1, property=User.orders).all()
assert [
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
] == o
o = sess.query(Order).filter(with_parent(u1, User.orders)).all()
assert [
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
] == o
# test generative criterion
o = sess.query(Order).with_parent(u1).filter(orders.c.id > 2).all()
assert [
Order(description="order 3"),
Order(description="order 5"),
] == o
# test against None for parent? this can't be done with the current
# API since we don't know what mapper to use
# assert
# sess.query(Order).with_parent(None, property='addresses').all()
# == [Order(description="order 5")]
def test_select_from(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
u1 = sess.query(User).get(7)
q = sess.query(Address).select_from(Address).with_parent(u1)
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses WHERE :param_1 = addresses.user_id",
{"param_1": 7},
)
def test_from_entity_standalone_fn(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
u1 = sess.query(User).get(7)
q = sess.query(User, Address).filter(
with_parent(u1, "addresses", from_entity=Address)
)
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name, "
"addresses.id AS addresses_id, addresses.user_id "
"AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM users, addresses "
"WHERE :param_1 = addresses.user_id",
{"param_1": 7},
)
def test_from_entity_query_entity(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
u1 = sess.query(User).get(7)
q = sess.query(User, Address).with_parent(
u1, "addresses", from_entity=Address
)
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name, "
"addresses.id AS addresses_id, addresses.user_id "
"AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM users, addresses "
"WHERE :param_1 = addresses.user_id",
{"param_1": 7},
)
def test_select_from_alias(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
u1 = sess.query(User).get(7)
a1 = aliased(Address)
q = sess.query(a1).with_parent(u1)
self.assert_compile(
q,
"SELECT addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM addresses AS addresses_1 "
"WHERE :param_1 = addresses_1.user_id",
{"param_1": 7},
)
def test_select_from_alias_explicit_prop(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
u1 = sess.query(User).get(7)
a1 = aliased(Address)
q = sess.query(a1).with_parent(u1, "addresses")
self.assert_compile(
q,
"SELECT addresses_1.id AS addresses_1_id, "
"addresses_1.user_id AS addresses_1_user_id, "
"addresses_1.email_address AS addresses_1_email_address "
"FROM addresses AS addresses_1 "
"WHERE :param_1 = addresses_1.user_id",
{"param_1": 7},
)
def test_noparent(self):
Item, User = self.classes.Item, self.classes.User
sess = create_session()
q = sess.query(User)
u1 = q.filter_by(name="jack").one()
try:
q = sess.query(Item).with_parent(u1)
assert False
except sa_exc.InvalidRequestError as e:
assert (
str(e) == "Could not locate a property which relates "
"instances of class 'Item' to instances of class 'User'"
)
def test_m2m(self):
Item, Keyword = self.classes.Item, self.classes.Keyword
sess = create_session()
i1 = sess.query(Item).filter_by(id=2).one()
k = sess.query(Keyword).with_parent(i1).all()
assert [
Keyword(name="red"),
Keyword(name="small"),
Keyword(name="square"),
] == k
def test_with_transient(self):
User, Order = self.classes.User, self.classes.Order
sess = Session()
q = sess.query(User)
u1 = q.filter_by(name="jack").one()
utrans = User(id=u1.id)
o = sess.query(Order).with_parent(utrans, "orders")
eq_(
[
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
],
o.all(),
)
o = sess.query(Order).filter(with_parent(utrans, "orders"))
eq_(
[
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
],
o.all(),
)
def test_with_pending_autoflush(self):
Order, User = self.classes.Order, self.classes.User
sess = Session()
o1 = sess.query(Order).first()
opending = Order(id=20, user_id=o1.user_id)
sess.add(opending)
eq_(
sess.query(User).with_parent(opending, "user").one(),
User(id=o1.user_id),
)
eq_(
sess.query(User).filter(with_parent(opending, "user")).one(),
User(id=o1.user_id),
)
def test_with_pending_no_autoflush(self):
Order, User = self.classes.Order, self.classes.User
sess = Session(autoflush=False)
o1 = sess.query(Order).first()
opending = Order(user_id=o1.user_id)
sess.add(opending)
eq_(
sess.query(User).with_parent(opending, "user").one(),
User(id=o1.user_id),
)
def test_unique_binds_union(self):
"""bindparams used in the 'parent' query are unique"""
User, Address = self.classes.User, self.classes.Address
sess = Session()
u1, u2 = sess.query(User).order_by(User.id)[0:2]
q1 = sess.query(Address).with_parent(u1, "addresses")
q2 = sess.query(Address).with_parent(u2, "addresses")
self.assert_compile(
q1.union(q2),
"SELECT anon_1.addresses_id AS anon_1_addresses_id, "
"anon_1.addresses_user_id AS anon_1_addresses_user_id, "
"anon_1.addresses_email_address AS "
"anon_1_addresses_email_address FROM (SELECT addresses.id AS "
"addresses_id, addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address FROM "
"addresses WHERE :param_1 = addresses.user_id UNION SELECT "
"addresses.id AS addresses_id, addresses.user_id AS "
"addresses_user_id, addresses.email_address "
"AS addresses_email_address "
"FROM addresses WHERE :param_2 = addresses.user_id) AS anon_1",
checkparams={"param_1": 7, "param_2": 8},
)
def test_unique_binds_or(self):
User, Address = self.classes.User, self.classes.Address
sess = Session()
u1, u2 = sess.query(User).order_by(User.id)[0:2]
self.assert_compile(
sess.query(Address).filter(
or_(with_parent(u1, "addresses"), with_parent(u2, "addresses"))
),
"SELECT addresses.id AS addresses_id, addresses.user_id AS "
"addresses_user_id, addresses.email_address AS "
"addresses_email_address FROM addresses WHERE "
":param_1 = addresses.user_id OR :param_2 = addresses.user_id",
checkparams={"param_1": 7, "param_2": 8},
)
class WithTransientOnNone(_fixtures.FixtureTest, AssertsCompiledSQL):
run_inserts = None
__dialect__ = "default"
def _fixture1(self):
User, Address, Dingaling, HasDingaling = (
self.classes.User,
self.classes.Address,
self.classes.Dingaling,
self.classes.HasDingaling,
)
users, addresses, dingalings, has_dingaling = (
self.tables.users,
self.tables.addresses,
self.tables.dingalings,
self.tables.has_dingaling,
)
mapper(User, users)
mapper(
Address,
addresses,
properties={
"user": relationship(User),
"special_user": relationship(
User,
primaryjoin=and_(
users.c.id == addresses.c.user_id,
users.c.name == addresses.c.email_address,
),
viewonly=True,
),
},
)
mapper(Dingaling, dingalings)
mapper(
HasDingaling,
has_dingaling,
properties={
"dingaling": relationship(
Dingaling,
primaryjoin=and_(
dingalings.c.id == has_dingaling.c.dingaling_id,
dingalings.c.data == "hi",
),
)
},
)
def test_filter_with_transient_dont_assume_pk(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
sess = Session()
q = sess.query(Address).filter(Address.user == User())
assert_raises_message(
sa_exc.StatementError,
"Can't resolve value for column users.id on object "
".User at .*; no value has been set for this column",
q.all,
)
def test_filter_with_transient_given_pk(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
sess = Session()
q = sess.query(Address).filter(Address.user == User(id=None))
with expect_warnings("Got None for value of column "):
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses WHERE :param_1 = addresses.user_id",
checkparams={"param_1": None},
)
def test_filter_with_transient_given_pk_but_only_later(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
sess = Session()
u1 = User()
# id is not set, so evaluates to NEVER_SET
q = sess.query(Address).filter(Address.user == u1)
# but we set it, so we should get the warning
u1.id = None
with expect_warnings("Got None for value of column "):
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses WHERE :param_1 = addresses.user_id",
checkparams={"param_1": None},
)
def test_filter_with_transient_warn_for_none_against_non_pk(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
s = Session()
q = s.query(Address).filter(
Address.special_user == User(id=None, name=None)
)
with expect_warnings("Got None for value of column"):
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses WHERE :param_1 = addresses.user_id "
"AND :param_2 = addresses.email_address",
checkparams={"param_1": None, "param_2": None},
)
def test_filter_with_persistent_non_pk_col_is_default_null(self):
# test #4676 - comparison to a persistent column that is
# NULL in the database, but is not fetched
self._fixture1()
Dingaling, HasDingaling = (
self.classes.Dingaling,
self.classes.HasDingaling,
)
s = Session()
d = Dingaling(id=1)
s.add(d)
s.flush()
assert "data" not in d.__dict__
q = s.query(HasDingaling).filter_by(dingaling=d)
with expect_warnings("Got None for value of column"):
self.assert_compile(
q,
"SELECT has_dingaling.id AS has_dingaling_id, "
"has_dingaling.dingaling_id AS has_dingaling_dingaling_id "
"FROM has_dingaling WHERE :param_1 = "
"has_dingaling.dingaling_id AND :param_2 = :data_1",
checkparams={"param_1": 1, "param_2": None, "data_1": "hi"},
)
def test_filter_with_detached_non_pk_col_is_default_null(self):
self._fixture1()
Dingaling, HasDingaling = (
self.classes.Dingaling,
self.classes.HasDingaling,
)
s = Session()
d = Dingaling()
s.add(d)
s.flush()
s.commit()
d.id
s.expire(d, ["data"])
s.expunge(d)
assert "data" not in d.__dict__
assert "id" in d.__dict__
q = s.query(HasDingaling).filter_by(dingaling=d)
# this case we still can't handle, object is detached so we assume
# nothing
assert_raises_message(
sa_exc.StatementError,
r"Can't resolve value for column dingalings.data on "
r"object .*Dingaling.* the object is detached and "
r"the value was expired",
q.all,
)
def test_filter_with_detached_non_pk_col_has_value(self):
self._fixture1()
Dingaling, HasDingaling = (
self.classes.Dingaling,
self.classes.HasDingaling,
)
s = Session()
d = Dingaling(data="some data")
s.add(d)
s.commit()
s.expire(d)
assert "data" not in d.__dict__
q = s.query(HasDingaling).filter_by(dingaling=d)
self.assert_compile(
q,
"SELECT has_dingaling.id AS has_dingaling_id, "
"has_dingaling.dingaling_id AS has_dingaling_dingaling_id "
"FROM has_dingaling WHERE :param_1 = "
"has_dingaling.dingaling_id AND :param_2 = :data_1",
checkparams={"param_1": 1, "param_2": "some data", "data_1": "hi"},
)
def test_with_parent_with_transient_assume_pk(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
sess = Session()
q = sess.query(User).with_parent(Address(user_id=None), "user")
with expect_warnings("Got None for value of column"):
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = :param_1",
checkparams={"param_1": None},
)
def test_with_parent_with_transient_warn_for_none_against_non_pk(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
s = Session()
q = s.query(User).with_parent(
Address(user_id=None, email_address=None), "special_user"
)
with expect_warnings("Got None for value of column"):
self.assert_compile(
q,
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = :param_1 "
"AND users.name = :param_2",
checkparams={"param_1": None, "param_2": None},
)
def test_negated_contains_or_equals_plain_m2o(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
s = Session()
q = s.query(Address).filter(Address.user != User(id=None))
with expect_warnings("Got None for value of column"):
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses "
"WHERE addresses.user_id != :user_id_1 "
"OR addresses.user_id IS NULL",
checkparams={"user_id_1": None},
)
def test_negated_contains_or_equals_complex_rel(self):
self._fixture1()
User, Address = self.classes.User, self.classes.Address
s = Session()
# this one does *not* warn because we do the criteria
# without deferral
q = s.query(Address).filter(Address.special_user != User(id=None))
self.assert_compile(
q,
"SELECT addresses.id AS addresses_id, "
"addresses.user_id AS addresses_user_id, "
"addresses.email_address AS addresses_email_address "
"FROM addresses "
"WHERE NOT (EXISTS (SELECT 1 "
"FROM users "
"WHERE users.id = addresses.user_id AND "
"users.name = addresses.email_address AND users.id IS NULL))",
checkparams={},
)
class SynonymTest(QueryTest, AssertsCompiledSQL):
__dialect__ = "default"
@classmethod
def setup_mappers(cls):
(
users,
Keyword,
items,
order_items,
orders,
Item,
User,
Address,
keywords,
Order,
item_keywords,
addresses,
) = (
cls.tables.users,
cls.classes.Keyword,
cls.tables.items,
cls.tables.order_items,
cls.tables.orders,
cls.classes.Item,
cls.classes.User,
cls.classes.Address,
cls.tables.keywords,
cls.classes.Order,
cls.tables.item_keywords,
cls.tables.addresses,
)
mapper(
User,
users,
properties={
"name_syn": synonym("name"),
"addresses": relationship(Address),
"orders": relationship(
Order, backref="user", order_by=orders.c.id
), # o2m, m2o
"orders_syn": synonym("orders"),
"orders_syn_2": synonym("orders_syn"),
},
)
mapper(Address, addresses)
mapper(
Order,
orders,
properties={
"items": relationship(Item, secondary=order_items), # m2m
"address": relationship(Address), # m2o
"items_syn": synonym("items"),
},
)
mapper(
Item,
items,
properties={
"keywords": relationship(
Keyword, secondary=item_keywords
) # m2m
},
)
mapper(Keyword, keywords)
def test_options(self):
User, Order = self.classes.User, self.classes.Order
s = create_session()
def go():
result = (
s.query(User)
.filter_by(name="jack")
.options(joinedload(User.orders_syn))
.all()
)
eq_(
result,
[
User(
id=7,
name="jack",
orders=[
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
],
)
],
)
self.assert_sql_count(testing.db, go, 1)
def test_options_syn_of_syn(self):
User, Order = self.classes.User, self.classes.Order
s = create_session()
def go():
result = (
s.query(User)
.filter_by(name="jack")
.options(joinedload(User.orders_syn_2))
.all()
)
eq_(
result,
[
User(
id=7,
name="jack",
orders=[
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
],
)
],
)
self.assert_sql_count(testing.db, go, 1)
def test_options_syn_of_syn_string(self):
User, Order = self.classes.User, self.classes.Order
s = create_session()
def go():
result = (
s.query(User)
.filter_by(name="jack")
.options(joinedload("orders_syn_2"))
.all()
)
eq_(
result,
[
User(
id=7,
name="jack",
orders=[
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
],
)
],
)
self.assert_sql_count(testing.db, go, 1)
def test_joins(self):
User, Order = self.classes.User, self.classes.Order
for j in (
[User.orders, Order.items],
[User.orders_syn, Order.items],
[User.orders_syn, Order.items],
[User.orders_syn_2, Order.items],
[User.orders, Order.items_syn],
[User.orders_syn, Order.items_syn],
[User.orders_syn_2, Order.items_syn],
):
q = create_session().query(User)
for path in j:
q = q.join(path)
q = q.filter_by(id=3)
result = q.all()
assert [User(id=7, name="jack"), User(id=9, name="fred")] == result
def test_with_parent(self):
Order, User = self.classes.Order, self.classes.User
for nameprop, orderprop in (
("name", "orders"),
("name_syn", "orders"),
("name", "orders_syn"),
("name", "orders_syn_2"),
("name_syn", "orders_syn"),
("name_syn", "orders_syn_2"),
):
sess = create_session()
q = sess.query(User)
u1 = q.filter_by(**{nameprop: "jack"}).one()
o = sess.query(Order).with_parent(u1, property=orderprop).all()
assert [
Order(description="order 1"),
Order(description="order 3"),
Order(description="order 5"),
] == o
def test_froms_aliased_col(self):
Address, User = self.classes.Address, self.classes.User
sess = create_session()
ua = aliased(User)
q = sess.query(ua.name_syn).join(Address, ua.id == Address.user_id)
self.assert_compile(
q,
"SELECT users_1.name AS users_1_name FROM "
"users AS users_1 JOIN addresses "
"ON users_1.id = addresses.user_id",
)
class ImmediateTest(_fixtures.FixtureTest):
run_inserts = "once"
run_deletes = None
@classmethod
def setup_mappers(cls):
Address, addresses, users, User = (
cls.classes.Address,
cls.tables.addresses,
cls.tables.users,
cls.classes.User,
)
mapper(Address, addresses)
mapper(User, users, properties=dict(addresses=relationship(Address)))
def test_one(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
assert_raises_message(
sa.orm.exc.NoResultFound,
r"No row was found when one was required",
sess.query(User).filter(User.id == 99).one,
)
eq_(sess.query(User).filter(User.id == 7).one().id, 7)
assert_raises_message(
sa.orm.exc.MultipleResultsFound,
r"Multiple rows were found when exactly one",
sess.query(User).one,
)
assert_raises(
sa.orm.exc.NoResultFound,
sess.query(User.id, User.name).filter(User.id == 99).one,
)
eq_(
sess.query(User.id, User.name).filter(User.id == 7).one(),
(7, "jack"),
)
assert_raises(
sa.orm.exc.MultipleResultsFound, sess.query(User.id, User.name).one
)
assert_raises(
sa.orm.exc.NoResultFound,
(
sess.query(User, Address)
.join(User.addresses)
.filter(Address.id == 99)
).one,
)
eq_(
(
sess.query(User, Address)
.join(User.addresses)
.filter(Address.id == 4)
).one(),
(User(id=8), Address(id=4)),
)
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User, Address).join(User.addresses).one,
)
# this result returns multiple rows, the first
# two rows being the same. but uniquing is
# not applied for a column based result.
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User.id)
.join(User.addresses)
.filter(User.id.in_([8, 9]))
.order_by(User.id)
.one,
)
# test that a join which ultimately returns
# multiple identities across many rows still
# raises, even though the first two rows are of
# the same identity and unique filtering
# is applied ([ticket:1688])
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User)
.join(User.addresses)
.filter(User.id.in_([8, 9]))
.order_by(User.id)
.one,
)
def test_one_or_none(self):
User, Address = self.classes.User, self.classes.Address
sess = create_session()
eq_(sess.query(User).filter(User.id == 99).one_or_none(), None)
eq_(sess.query(User).filter(User.id == 7).one_or_none().id, 7)
assert_raises_message(
sa.orm.exc.MultipleResultsFound,
r"Multiple rows were found when one or none was required",
sess.query(User).one_or_none,
)
eq_(
sess.query(User.id, User.name).filter(User.id == 99).one_or_none(),
None,
)
eq_(
sess.query(User.id, User.name).filter(User.id == 7).one_or_none(),
(7, "jack"),
)
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User.id, User.name).one_or_none,
)
eq_(
(
sess.query(User, Address)
.join(User.addresses)
.filter(Address.id == 99)
).one_or_none(),
None,
)
eq_(
(
sess.query(User, Address)
.join(User.addresses)
.filter(Address.id == 4)
).one_or_none(),
(User(id=8), Address(id=4)),
)
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User, Address).join(User.addresses).one_or_none,
)
# this result returns multiple rows, the first
# two rows being the same. but uniquing is
# not applied for a column based result.
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User.id)
.join(User.addresses)
.filter(User.id.in_([8, 9]))
.order_by(User.id)
.one_or_none,
)
# test that a join which ultimately returns
# multiple identities across many rows still
# raises, even though the first two rows are of
# the same identity and unique filtering
# is applied ([ticket:1688])
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User)
.join(User.addresses)
.filter(User.id.in_([8, 9]))
.order_by(User.id)
.one_or_none,
)
@testing.future
def test_getslice(self):
assert False
def test_scalar(self):
User = self.classes.User
sess = create_session()
eq_(sess.query(User.id).filter_by(id=7).scalar(), 7)
eq_(sess.query(User.id, User.name).filter_by(id=7).scalar(), 7)
eq_(sess.query(User.id).filter_by(id=0).scalar(), None)
eq_(
sess.query(User).filter_by(id=7).scalar(),
sess.query(User).filter_by(id=7).one(),
)
assert_raises(sa.orm.exc.MultipleResultsFound, sess.query(User).scalar)
assert_raises(
sa.orm.exc.MultipleResultsFound,
sess.query(User.id, User.name).scalar,
)
class ExecutionOptionsTest(QueryTest):
def test_option_building(self):
User = self.classes.User
sess = create_session(bind=testing.db, autocommit=False)
q1 = sess.query(User)
eq_(q1._execution_options, dict())
q2 = q1.execution_options(foo="bar", stream_results=True)
# q1's options should be unchanged.
eq_(q1._execution_options, dict())
# q2 should have them set.
eq_(q2._execution_options, dict(foo="bar", stream_results=True))
q3 = q2.execution_options(foo="not bar", answer=42)
eq_(q2._execution_options, dict(foo="bar", stream_results=True))
q3_options = dict(foo="not bar", stream_results=True, answer=42)
eq_(q3._execution_options, q3_options)
def test_get_options(self):
User = self.classes.User
sess = create_session(bind=testing.db, autocommit=False)
q = sess.query(User).execution_options(foo="bar", stream_results=True)
eq_(q.get_execution_options(), dict(foo="bar", stream_results=True))
def test_options_in_connection(self):
User = self.classes.User
execution_options = dict(foo="bar", stream_results=True)
class TQuery(Query):
def instances(self, result, ctx):
try:
eq_(
result.connection._execution_options, execution_options
)
finally:
result.close()
return iter([])
sess = create_session(
bind=testing.db, autocommit=False, query_cls=TQuery
)
q1 = sess.query(User).execution_options(**execution_options)
q1.all()
class BooleanEvalTest(fixtures.TestBase, testing.AssertsCompiledSQL):
"""test standalone booleans being wrapped in an AsBoolean, as well
as true/false compilation."""
def _dialect(self, native_boolean):
d = default.DefaultDialect()
d.supports_native_boolean = native_boolean
return d
def test_one(self):
s = Session()
c = column("x", Boolean)
self.assert_compile(
s.query(c).filter(c),
"SELECT x WHERE x",
dialect=self._dialect(True),
)
def test_two(self):
s = Session()
c = column("x", Boolean)
self.assert_compile(
s.query(c).filter(c),
"SELECT x WHERE x = 1",
dialect=self._dialect(False),
)
def test_three(self):
s = Session()
c = column("x", Boolean)
self.assert_compile(
s.query(c).filter(~c),
"SELECT x WHERE x = 0",
dialect=self._dialect(False),
)
def test_four(self):
s = Session()
c = column("x", Boolean)
self.assert_compile(
s.query(c).filter(~c),
"SELECT x WHERE NOT x",
dialect=self._dialect(True),
)
def test_five(self):
s = Session()
c = column("x", Boolean)
self.assert_compile(
s.query(c).having(c),
"SELECT x HAVING x = 1",
dialect=self._dialect(False),
)
class SessionBindTest(QueryTest):
@contextlib.contextmanager
def _assert_bind_args(self, session, expect_mapped_bind=True):
get_bind = mock.Mock(side_effect=session.get_bind)
with mock.patch.object(session, "get_bind", get_bind):
yield
for call_ in get_bind.mock_calls:
if expect_mapped_bind:
eq_(
call_,
mock.call(
clause=mock.ANY, mapper=inspect(self.classes.User)
),
)
else:
eq_(call_, mock.call(clause=mock.ANY))
def test_single_entity_q(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User).all()
def test_aliased_entity_q(self):
User = self.classes.User
u = aliased(User)
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(u).all()
def test_sql_expr_entity_q(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User.id).all()
def test_sql_expr_subquery_from_entity(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
subq = session.query(User.id).subquery()
session.query(subq).all()
@testing.requires.boolean_col_expressions
def test_sql_expr_exists_from_entity(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
subq = session.query(User.id).exists()
session.query(subq).all()
def test_sql_expr_cte_from_entity(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
cte = session.query(User.id).cte()
subq = session.query(cte).subquery()
session.query(subq).all()
def test_sql_expr_bundle_cte_from_entity(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
cte = session.query(User.id, User.name).cte()
subq = session.query(cte).subquery()
bundle = Bundle(subq.c.id, subq.c.name)
session.query(bundle).all()
def test_count(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User).count()
def test_single_col(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User.name).all()
def test_single_col_from_subq(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
subq = session.query(User.id, User.name).subquery()
session.query(subq.c.name).all()
def test_aggregate_fn(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(func.max(User.name)).all()
def test_case(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(case([(User.name == "x", "C")], else_="W")).all()
def test_cast(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(cast(User.name, String())).all()
def test_type_coerce(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(type_coerce(User.name, String())).all()
def test_binary_op(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User.name + "x").all()
@testing.requires.boolean_col_expressions
def test_boolean_op(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(User.name == "x").all()
def test_bulk_update_no_sync(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session):
session.query(User).filter(User.id == 15).update(
{"name": "foob"}, synchronize_session=False
)
def test_bulk_delete_no_sync(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session):
session.query(User).filter(User.id == 15).delete(
synchronize_session=False
)
def test_bulk_update_fetch_sync(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session):
session.query(User).filter(User.id == 15).update(
{"name": "foob"}, synchronize_session="fetch"
)
def test_bulk_delete_fetch_sync(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session):
session.query(User).filter(User.id == 15).delete(
synchronize_session="fetch"
)
def test_column_property(self):
User = self.classes.User
mapper = inspect(User)
mapper.add_property(
"score",
column_property(func.coalesce(self.tables.users.c.name, None)),
)
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=True):
session.query(func.max(User.score)).scalar()
def test_plain_table(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=False):
session.query(inspect(User).local_table).all()
def _test_plain_table_from_self(self):
User = self.classes.User
# TODO: this test is dumb
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=False):
session.query(inspect(User).local_table).from_self().all()
def test_plain_table_count(self):
User = self.classes.User
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=False):
session.query(inspect(User).local_table).count()
def test_plain_table_select_from(self):
User = self.classes.User
table = inspect(User).local_table
session = Session()
with self._assert_bind_args(session, expect_mapped_bind=False):
session.query(table).select_from(table).all()
@testing.requires.nested_aggregates
def test_column_property_select(self):
User = self.classes.User
Address = self.classes.Address
mapper = inspect(User)
mapper.add_property(
"score",
column_property(
select(func.sum(Address.id))
.where(Address.user_id == User.id)
.scalar_subquery()
),
)
session = Session()
with self._assert_bind_args(session):
session.query(func.max(User.score)).scalar()
class QueryClsTest(QueryTest):
def _fn_fixture(self):
def query(*arg, **kw):
return Query(*arg, **kw)
return query
def _subclass_fixture(self):
class MyQuery(Query):
pass
return MyQuery
def _callable_fixture(self):
class MyQueryFactory(object):
def __call__(self, *arg, **kw):
return Query(*arg, **kw)
return MyQueryFactory()
def _plain_fixture(self):
return Query
def _test_get(self, fixture):
User = self.classes.User
s = Session(query_cls=fixture())
assert s.query(User).get(19) is None
u = s.query(User).get(7)
u2 = s.query(User).get(7)
assert u is u2
def _test_o2m_lazyload(self, fixture):
User, Address = self.classes("User", "Address")
s = Session(query_cls=fixture())
u1 = s.query(User).filter(User.id == 7).first()
eq_(u1.addresses, [Address(id=1)])
def _test_m2o_lazyload(self, fixture):
User, Address = self.classes("User", "Address")
s = Session(query_cls=fixture())
a1 = s.query(Address).filter(Address.id == 1).first()
eq_(a1.user, User(id=7))
def _test_expr(self, fixture):
User, Address = self.classes("User", "Address")
s = Session(query_cls=fixture())
q = s.query(func.max(User.id).label("max"))
eq_(q.scalar(), 10)
def _test_expr_undocumented_query_constructor(self, fixture):
# see #4269. not documented but already out there.
User, Address = self.classes("User", "Address")
s = Session(query_cls=fixture())
q = Query(func.max(User.id).label("max")).with_session(s)
eq_(q.scalar(), 10)
def test_plain_get(self):
self._test_get(self._plain_fixture)
def test_callable_get(self):
self._test_get(self._callable_fixture)
def test_subclass_get(self):
self._test_get(self._subclass_fixture)
def test_fn_get(self):
self._test_get(self._fn_fixture)
def test_plain_expr(self):
self._test_expr(self._plain_fixture)
def test_callable_expr(self):
self._test_expr(self._callable_fixture)
def test_subclass_expr(self):
self._test_expr(self._subclass_fixture)
def test_fn_expr(self):
self._test_expr(self._fn_fixture)
def test_plain_expr_undocumented_query_constructor(self):
self._test_expr_undocumented_query_constructor(self._plain_fixture)
def test_callable_expr_undocumented_query_constructor(self):
self._test_expr_undocumented_query_constructor(self._callable_fixture)
def test_subclass_expr_undocumented_query_constructor(self):
self._test_expr_undocumented_query_constructor(self._subclass_fixture)
def test_fn_expr_undocumented_query_constructor(self):
self._test_expr_undocumented_query_constructor(self._fn_fixture)
def test_callable_o2m_lazyload(self):
self._test_o2m_lazyload(self._callable_fixture)
def test_subclass_o2m_lazyload(self):
self._test_o2m_lazyload(self._subclass_fixture)
def test_fn_o2m_lazyload(self):
self._test_o2m_lazyload(self._fn_fixture)
def test_callable_m2o_lazyload(self):
self._test_m2o_lazyload(self._callable_fixture)
def test_subclass_m2o_lazyload(self):
self._test_m2o_lazyload(self._subclass_fixture)
def test_fn_m2o_lazyload(self):
self._test_m2o_lazyload(self._fn_fixture)
Reference in New Issue View Git Blame Copy Permalink