mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-14 12:47:22 -04:00
Mike Bayer
3916bfc9cc
A :func:`_sql.select` construct that is passed a sole '*' argument for ``SELECT *``, either via string, :func:`_sql.text`, or :func:`_sql.literal_column`, will be interpreted as a Core-level SQL statement rather than as an ORM level statement. This is so that the ``*``, when expanded to match any number of columns, will result in all columns returned in the result. the ORM- level interpretation of :func:`_sql.select` needs to know the names and types of all ORM columns up front which can't be achieved when ``'*'`` is used. If ``'*`` is used amongst other expressions simultaneously with an ORM statement, an error is raised as this can't be interpreted correctly by the ORM. Fixes: #8235 Change-Id: Ic8e84491e14acdc8570704eadeaeaf6e16b1e870
240 lines
7.1 KiB
Python
240 lines
7.1 KiB
Python
from sqlalchemy import exc
|
|
from sqlalchemy import literal
|
|
from sqlalchemy import literal_column
|
|
from sqlalchemy import select
|
|
from sqlalchemy import testing
|
|
from sqlalchemy import text
|
|
from sqlalchemy.orm import loading
|
|
from sqlalchemy.orm import relationship
|
|
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 expect_raises_message
|
|
from sqlalchemy.testing.fixtures import fixture_session
|
|
from . import _fixtures
|
|
|
|
# class GetFromIdentityTest(_fixtures.FixtureTest):
|
|
# class LoadOnIdentTest(_fixtures.FixtureTest):
|
|
|
|
|
|
class SelectStarTest(_fixtures.FixtureTest):
|
|
run_setup_mappers = "once"
|
|
run_inserts = "once"
|
|
run_deletes = None
|
|
|
|
@classmethod
|
|
def setup_mappers(cls):
|
|
cls._setup_stock_mapping()
|
|
|
|
@testing.combinations(
|
|
"plain", "text", "literal_column", argnames="exprtype"
|
|
)
|
|
@testing.combinations("core", "orm", argnames="coreorm")
|
|
def test_single_star(self, exprtype, coreorm):
|
|
"""test for #8235"""
|
|
User, Address = self.classes("User", "Address")
|
|
|
|
if exprtype == "plain":
|
|
star = "*"
|
|
elif exprtype == "text":
|
|
star = text("*")
|
|
elif exprtype == "literal_column":
|
|
star = literal_column("*")
|
|
else:
|
|
assert False
|
|
|
|
stmt = (
|
|
select(star)
|
|
.select_from(User)
|
|
.join(Address)
|
|
.where(User.id == 7)
|
|
.order_by(User.id, Address.id)
|
|
)
|
|
|
|
s = fixture_session()
|
|
|
|
if coreorm == "core":
|
|
result = s.connection().execute(stmt)
|
|
elif coreorm == "orm":
|
|
result = s.execute(stmt)
|
|
else:
|
|
assert False
|
|
|
|
eq_(result.all(), [(7, "jack", 1, 7, "jack@bean.com")])
|
|
|
|
@testing.combinations(
|
|
"plain", "text", "literal_column", argnames="exprtype"
|
|
)
|
|
@testing.combinations(
|
|
lambda User, star: (star, User.id),
|
|
lambda User, star: (star, User),
|
|
lambda User, star: (User.id, star),
|
|
lambda User, star: (User, star),
|
|
lambda User, star: (literal("some text"), star),
|
|
lambda User, star: (star, star),
|
|
lambda User, star: (star, text("some text")),
|
|
argnames="testcase",
|
|
)
|
|
def test_no_star_orm_combinations(self, exprtype, testcase):
|
|
"""test for #8235"""
|
|
User = self.classes.User
|
|
|
|
if exprtype == "plain":
|
|
star = "*"
|
|
elif exprtype == "text":
|
|
star = text("*")
|
|
elif exprtype == "literal_column":
|
|
star = literal_column("*")
|
|
else:
|
|
assert False
|
|
|
|
args = testing.resolve_lambda(testcase, User=User, star=star)
|
|
stmt = select(*args).select_from(User)
|
|
|
|
s = fixture_session()
|
|
|
|
with expect_raises_message(
|
|
exc.CompileError,
|
|
r"Can't generate ORM query that includes multiple expressions "
|
|
r"at the same time as '\*';",
|
|
):
|
|
s.execute(stmt)
|
|
|
|
|
|
class InstanceProcessorTest(_fixtures.FixtureTest):
|
|
def test_state_no_load_path_comparison(self):
|
|
# test issue #5110
|
|
User, Order, Address = self.classes("User", "Order", "Address")
|
|
users, orders, addresses = self.tables("users", "orders", "addresses")
|
|
|
|
self.mapper_registry.map_imperatively(
|
|
User,
|
|
users,
|
|
properties={
|
|
"addresses": relationship(Address, lazy="joined"),
|
|
"orders": relationship(
|
|
Order, lazy="joined", order_by=orders.c.id
|
|
),
|
|
},
|
|
)
|
|
self.mapper_registry.map_imperatively(
|
|
Order,
|
|
orders,
|
|
properties={"address": relationship(Address, lazy="joined")},
|
|
)
|
|
self.mapper_registry.map_imperatively(Address, addresses)
|
|
|
|
s = fixture_session()
|
|
|
|
def go():
|
|
eq_(
|
|
User(
|
|
id=7,
|
|
orders=[
|
|
Order(id=1, address=Address(id=1)),
|
|
Order(id=3, address=Address(id=1)),
|
|
Order(id=5, address=None),
|
|
],
|
|
),
|
|
s.get(User, 7, populate_existing=True),
|
|
)
|
|
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
|
|
|
|
class InstancesTest(_fixtures.FixtureTest):
|
|
run_setup_mappers = "once"
|
|
run_inserts = "once"
|
|
run_deletes = None
|
|
|
|
@classmethod
|
|
def setup_mappers(cls):
|
|
cls._setup_stock_mapping()
|
|
|
|
def test_cursor_close_w_failed_rowproc(self):
|
|
User = self.classes.User
|
|
s = fixture_session()
|
|
|
|
q = s.query(User)
|
|
|
|
ctx = q._compile_context()
|
|
cursor = mock.Mock()
|
|
ctx.compile_state._entities = [
|
|
mock.Mock(row_processor=mock.Mock(side_effect=Exception("boom")))
|
|
]
|
|
assert_raises(Exception, loading.instances, cursor, ctx)
|
|
assert cursor.close.called, "Cursor wasn't closed"
|
|
|
|
def test_row_proc_not_created(self):
|
|
User = self.classes.User
|
|
s = fixture_session()
|
|
|
|
q = s.query(User.id, User.name)
|
|
stmt = select(User.id)
|
|
|
|
assert_raises_message(
|
|
exc.NoSuchColumnError,
|
|
"Could not locate column in row for column 'users.name'",
|
|
q.from_statement(stmt).all,
|
|
)
|
|
|
|
|
|
class MergeResultTest(_fixtures.FixtureTest):
|
|
run_setup_mappers = "once"
|
|
run_inserts = "once"
|
|
run_deletes = None
|
|
|
|
@classmethod
|
|
def setup_mappers(cls):
|
|
cls._setup_stock_mapping()
|
|
|
|
def _fixture(self):
|
|
User = self.classes.User
|
|
|
|
s = fixture_session()
|
|
u1, u2, u3, u4 = (
|
|
User(id=1, name="u1"),
|
|
User(id=2, name="u2"),
|
|
User(id=7, name="u3"),
|
|
User(id=8, name="u4"),
|
|
)
|
|
s.query(User).filter(User.id.in_([7, 8])).all()
|
|
s.close()
|
|
return s, [u1, u2, u3, u4]
|
|
|
|
def test_single_entity_frozen(self):
|
|
s = fixture_session()
|
|
User = self.classes.User
|
|
|
|
stmt = select(User).where(User.id.in_([7, 8, 9])).order_by(User.id)
|
|
result = s.execute(stmt)
|
|
it = loading.merge_frozen_result(s, stmt, result.freeze())
|
|
eq_([x.id for x in it().scalars()], [7, 8, 9])
|
|
|
|
def test_single_column_frozen(self):
|
|
User = self.classes.User
|
|
|
|
s = fixture_session()
|
|
|
|
stmt = select(User.id).where(User.id.in_([7, 8, 9])).order_by(User.id)
|
|
result = s.execute(stmt)
|
|
it = loading.merge_frozen_result(s, stmt, result.freeze())
|
|
eq_([x.id for x in it()], [7, 8, 9])
|
|
|
|
def test_entity_col_mix_plain_tuple_frozen(self):
|
|
s = fixture_session()
|
|
User = self.classes.User
|
|
|
|
stmt = (
|
|
select(User, User.id)
|
|
.where(User.id.in_([7, 8, 9]))
|
|
.order_by(User.id)
|
|
)
|
|
result = s.execute(stmt)
|
|
|
|
it = loading.merge_frozen_result(s, stmt, result.freeze())
|
|
it = list(it())
|
|
eq_([(x.id, y) for x, y in it], [(7, 7), (8, 8), (9, 9)])
|
|
eq_(list(it[0]._mapping.keys()), ["User", "id"])
|