from sqlalchemy import Boolean from sqlalchemy import case from sqlalchemy import column from sqlalchemy import delete from sqlalchemy import event from sqlalchemy import exc from sqlalchemy import ForeignKey from sqlalchemy import func from sqlalchemy import insert from sqlalchemy import Integer from sqlalchemy import lambda_stmt from sqlalchemy import or_ from sqlalchemy import select from sqlalchemy import String from sqlalchemy import testing from sqlalchemy import text from sqlalchemy import update from sqlalchemy.orm import backref from sqlalchemy.orm import joinedload from sqlalchemy.orm import relationship from sqlalchemy.orm import Session from sqlalchemy.orm import sessionmaker from sqlalchemy.orm import synonym from sqlalchemy.orm import with_loader_criteria from sqlalchemy.sql.dml import Delete from sqlalchemy.sql.dml import Update from sqlalchemy.sql.selectable import Select from sqlalchemy.testing import assert_raises from sqlalchemy.testing import assert_raises_message from sqlalchemy.testing import eq_ from sqlalchemy.testing import fixtures from sqlalchemy.testing import in_ from sqlalchemy.testing import not_in from sqlalchemy.testing.assertions import expect_raises_message from sqlalchemy.testing.assertsql import CompiledSQL from sqlalchemy.testing.fixtures import fixture_session from sqlalchemy.testing.schema import Column from sqlalchemy.testing.schema import Table class UpdateDeleteTest(fixtures.MappedTest): __backend__ = True @classmethod def define_tables(cls, metadata): Table( "users", metadata, Column( "id", Integer, primary_key=True, test_needs_autoincrement=True ), Column("name", String(32)), Column("age_int", Integer), ) Table( "addresses", metadata, Column("id", Integer, primary_key=True), Column("user_id", ForeignKey("users.id")), ) @classmethod def setup_classes(cls): class User(cls.Comparable): pass class Address(cls.Comparable): pass @classmethod def insert_data(cls, connection): users = cls.tables.users connection.execute( users.insert(), [ dict(id=1, name="john", age_int=25), dict(id=2, name="jack", age_int=47), dict(id=3, name="jill", age_int=29), dict(id=4, name="jane", age_int=37), ], ) @classmethod def setup_mappers(cls): User = cls.classes.User users = cls.tables.users Address = cls.classes.Address addresses = cls.tables.addresses cls.mapper_registry.map_imperatively( User, users, properties={ "age": users.c.age_int, "addresses": relationship(Address), }, ) cls.mapper_registry.map_imperatively(Address, addresses) @testing.combinations("table", "mapper", "both", argnames="bind_type") @testing.combinations( "update", "insert", "delete", argnames="statement_type" ) def test_get_bind_scenarios(self, connection, bind_type, statement_type): """test for #7936""" User = self.classes.User if statement_type == "insert": stmt = insert(User).values( {User.id: 5, User.age: 25, User.name: "spongebob"} ) elif statement_type == "update": stmt = ( update(User) .where(User.id == 2) .values({User.name: "spongebob"}) ) elif statement_type == "delete": stmt = delete(User) binds = {} if bind_type == "both": binds = {User: connection, User.__table__: connection} elif bind_type == "mapper": binds = {User: connection} elif bind_type == "table": binds = {User.__table__: connection} with Session(binds=binds) as sess: sess.execute(stmt) def test_illegal_eval(self): User = self.classes.User s = fixture_session() assert_raises_message( exc.ArgumentError, "Valid strategies for session synchronization " "are 'evaluate', 'fetch', False", s.query(User).update, {}, synchronize_session="fake", ) def test_illegal_operations(self): User = self.classes.User Address = self.classes.Address s = fixture_session() for q, mname in ( (s.query(User).limit(2), r"limit\(\)"), (s.query(User).offset(2), r"offset\(\)"), (s.query(User).limit(2).offset(2), r"limit\(\)"), (s.query(User).order_by(User.id), r"order_by\(\)"), (s.query(User).group_by(User.id), r"group_by\(\)"), (s.query(User).distinct(), r"distinct\(\)"), ( s.query(User).join(User.addresses), r"join\(\), outerjoin\(\), select_from\(\), or from_self\(\)", ), ( s.query(User).outerjoin(User.addresses), r"join\(\), outerjoin\(\), select_from\(\), or from_self\(\)", ), ( s.query(User).select_from(Address), r"join\(\), outerjoin\(\), select_from\(\), or from_self\(\)", ), ): assert_raises_message( exc.InvalidRequestError, r"Can't call Query.update\(\) or Query.delete\(\) when " "%s has been called" % mname, q.update, {"name": "ed"}, ) assert_raises_message( exc.InvalidRequestError, r"Can't call Query.update\(\) or Query.delete\(\) when " "%s has been called" % mname, q.delete, ) def test_update_w_unevaluatable_value_evaluate(self): """test that the "evaluate" strategy falls back to 'expire' for an update SET that is not evaluable in Python.""" User = self.classes.User s = Session(testing.db, future=True) jill = s.query(User).filter(User.name == "jill").one() s.execute( update(User) .filter(User.name == "jill") .values({"name": User.name + User.name}), execution_options={"synchronize_session": "evaluate"}, ) eq_(jill.name, "jilljill") def test_update_w_unevaluatable_value_fetch(self): """test that the "fetch" strategy falls back to 'expire' for an update SET that is not evaluable in Python. Prior to 1.4 the "fetch" strategy used expire for everything but now it tries to evaluate a SET clause to avoid a round trip. """ User = self.classes.User s = Session(testing.db, future=True) jill = s.query(User).filter(User.name == "jill").one() s.execute( update(User) .filter(User.name == "jill") .values({"name": User.name + User.name}), execution_options={"synchronize_session": "fetch"}, ) eq_(jill.name, "jilljill") def test_evaluate_clauseelement(self): User = self.classes.User class Thing(object): def __clause_element__(self): return User.name.__clause_element__() s = fixture_session() jill = s.get(User, 3) s.query(User).update( {Thing(): "moonbeam"}, synchronize_session="evaluate" ) eq_(jill.name, "moonbeam") def test_evaluate_invalid(self): User = self.classes.User class Thing(object): def __clause_element__(self): return 5 s = fixture_session() assert_raises_message( exc.ArgumentError, "SET/VALUES column expression or string key expected, got .*Thing", s.query(User).update, {Thing(): "moonbeam"}, synchronize_session="evaluate", ) def test_evaluate_unmapped_col(self): User = self.classes.User s = fixture_session() jill = s.get(User, 3) s.query(User).update( {column("name"): "moonbeam"}, synchronize_session="evaluate" ) eq_(jill.name, "jill") s.expire(jill) eq_(jill.name, "moonbeam") def test_evaluate_synonym_string(self): class Foo(object): pass self.mapper_registry.map_imperatively( Foo, self.tables.users, properties={"uname": synonym("name")} ) s = fixture_session() jill = s.get(Foo, 3) s.query(Foo).update( {"uname": "moonbeam"}, synchronize_session="evaluate" ) eq_(jill.uname, "moonbeam") def test_evaluate_synonym_attr(self): class Foo(object): pass self.mapper_registry.map_imperatively( Foo, self.tables.users, properties={"uname": synonym("name")} ) s = fixture_session() jill = s.get(Foo, 3) s.query(Foo).update( {Foo.uname: "moonbeam"}, synchronize_session="evaluate" ) eq_(jill.uname, "moonbeam") def test_evaluate_double_synonym_attr(self): class Foo(object): pass self.mapper_registry.map_imperatively( Foo, self.tables.users, properties={"uname": synonym("name"), "ufoo": synonym("uname")}, ) s = fixture_session() jill = s.get(Foo, 3) s.query(Foo).update( {Foo.ufoo: "moonbeam"}, synchronize_session="evaluate" ) eq_(jill.ufoo, "moonbeam") @testing.combinations( (False, False), (False, True), (True, False), (True, True), ) def test_evaluate_dont_refresh_expired_objects( self, expire_jane_age, add_filter_criteria ): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.expire(john) sess.expire(jill) if expire_jane_age: sess.expire(jane, ["name", "age"]) else: sess.expire(jane, ["name"]) with self.sql_execution_asserter() as asserter: # using 1.x style for easier backport if add_filter_criteria: sess.query(User).filter(User.name != None).update( {"age": User.age + 10}, synchronize_session="evaluate" ) else: sess.query(User).update( {"age": User.age + 10}, synchronize_session="evaluate" ) if add_filter_criteria: if expire_jane_age: asserter.assert_( # it has to unexpire jane.name, because jane is not fully # expired and the criteria needs to look at this particular # key CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 4}], ), CompiledSQL( "UPDATE users " "SET age_int=(users.age_int + :age_int_1) " "WHERE users.name IS NOT NULL", [{"age_int_1": 10}], ), ) else: asserter.assert_( # it has to unexpire jane.name, because jane is not fully # expired and the criteria needs to look at this particular # key CompiledSQL( "SELECT users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 4}], ), CompiledSQL( "UPDATE users SET " "age_int=(users.age_int + :age_int_1) " "WHERE users.name IS NOT NULL", [{"age_int_1": 10}], ), ) else: asserter.assert_( CompiledSQL( "UPDATE users SET age_int=(users.age_int + :age_int_1)", [{"age_int_1": 10}], ), ) with self.sql_execution_asserter() as asserter: eq_(john.age, 35) # needs refresh eq_(jack.age, 57) # no SQL needed eq_(jill.age, 39) # needs refresh eq_(jane.age, 47) # needs refresh to_assert = [ # refresh john CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.id AS users_id, users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 1}], ), # refresh jill CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.id AS users_id, users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 3}], ), ] if expire_jane_age and not add_filter_criteria: to_assert.append( # refresh jane CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 4}], ) ) asserter.assert_(*to_assert) def test_fetch_dont_refresh_expired_objects(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.expire(john) sess.expire(jill) sess.expire(jane, ["name"]) with self.sql_execution_asserter() as asserter: # using 1.x style for easier backport sess.query(User).filter(User.name != None).update( {"age": User.age + 10}, synchronize_session="fetch" ) if testing.db.dialect.full_returning: asserter.assert_( CompiledSQL( "UPDATE users SET age_int=(users.age_int + %(age_int_1)s) " "WHERE users.name IS NOT NULL " "RETURNING users.id", [{"age_int_1": 10}], dialect="postgresql", ), ) else: asserter.assert_( CompiledSQL( "SELECT users.id FROM users " "WHERE users.name IS NOT NULL" ), CompiledSQL( "UPDATE users SET age_int=(users.age_int + :age_int_1) " "WHERE users.name IS NOT NULL", [{"age_int_1": 10}], ), ) with self.sql_execution_asserter() as asserter: eq_(john.age, 35) # needs refresh eq_(jack.age, 57) # no SQL needed eq_(jill.age, 39) # needs refresh eq_(jane.age, 47) # no SQL needed asserter.assert_( # refresh john CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.id AS users_id, users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 1}], ), # refresh jill CompiledSQL( "SELECT users.age_int AS users_age_int, " "users.id AS users_id, users.name AS users_name FROM users " "WHERE users.id = :pk_1", [{"pk_1": 3}], ), ) def test_delete(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter( or_(User.name == "john", User.name == "jill") ).delete() assert john not in sess and jill not in sess eq_(sess.query(User).order_by(User.id).all(), [jack, jane]) def test_delete_against_metadata(self): User = self.classes.User users = self.tables.users sess = fixture_session() sess.query(users).delete(synchronize_session=False) eq_(sess.query(User).count(), 0) def test_delete_with_bindparams(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter(text("name = :name")).params( name="john" ).delete("fetch") assert john not in sess eq_(sess.query(User).order_by(User.id).all(), [jack, jill, jane]) def test_delete_rollback(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter( or_(User.name == "john", User.name == "jill") ).delete(synchronize_session="evaluate") assert john not in sess and jill not in sess sess.rollback() assert john in sess and jill in sess def test_delete_rollback_with_fetch(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter( or_(User.name == "john", User.name == "jill") ).delete(synchronize_session="fetch") assert john not in sess and jill not in sess sess.rollback() assert john in sess and jill in sess def test_delete_without_session_sync(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter( or_(User.name == "john", User.name == "jill") ).delete(synchronize_session=False) assert john in sess and jill in sess eq_(sess.query(User).order_by(User.id).all(), [jack, jane]) def test_delete_with_fetch_strategy(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter( or_(User.name == "john", User.name == "jill") ).delete(synchronize_session="fetch") assert john not in sess and jill not in sess eq_(sess.query(User).order_by(User.id).all(), [jack, jane]) @testing.requires.update_where_target_in_subquery def test_delete_invalid_evaluation(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() assert_raises( exc.InvalidRequestError, sess.query(User) .filter(User.name == select(func.max(User.name)).scalar_subquery()) .delete, synchronize_session="evaluate", ) sess.query(User).filter( User.name == select(func.max(User.name)).scalar_subquery() ).delete(synchronize_session="fetch") assert john not in sess eq_(sess.query(User).order_by(User.id).all(), [jack, jill, jane]) def test_update(self): User, users = self.classes.User, self.tables.users sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter(User.age > 29).update( {"age": User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 37, 29, 27])), ) sess.query(User).filter(User.age > 29).update( {User.age: User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 29, 27])), ) sess.query(User).filter(User.age > 27).update( {users.c.age_int: User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 19, 27])), ) sess.query(User).filter(User.age == 25).update( {User.age: User.age - 10}, synchronize_session="fetch" ) eq_([john.age, jack.age, jill.age, jane.age], [15, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([15, 27, 19, 27])), ) def test_update_future(self): User, users = self.classes.User, self.tables.users sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) result = sess.execute( update(User) .where(User.age > 29) .values({"age": User.age - 10}) .execution_options(synchronize_session="evaluate"), ) eq_(result.rowcount, 2) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.execute(select(User.age).order_by(User.id)).all(), list(zip([25, 37, 29, 27])), ) result = sess.execute( update(User) .where(User.age > 29) .values({User.age: User.age - 10}) .execution_options(synchronize_session="fetch") ) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 29, 27])), ) sess.query(User).filter(User.age > 27).update( {users.c.age_int: User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 19, 27])), ) sess.query(User).filter(User.age == 25).update( {User.age: User.age - 10}, synchronize_session="fetch" ) eq_([john.age, jack.age, jill.age, jane.age], [15, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([15, 27, 19, 27])), ) @testing.variation("values_first", [True, False]) def test_update_future_lambda(self, values_first): User, users = self.classes.User, self.tables.users sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) new_value = 10 if values_first: stmt = lambda_stmt(lambda: update(User)) stmt += lambda s: s.values({"age": User.age - new_value}) stmt += lambda s: s.where(User.age > 29).execution_options( synchronize_session="evaluate" ) else: stmt = lambda_stmt( lambda: update(User) .where(User.age > 29) .values({"age": User.age - new_value}) .execution_options(synchronize_session="evaluate") ) sess.execute(stmt) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.execute(select(User.age).order_by(User.id)).all(), list(zip([25, 37, 29, 27])), ) if values_first: stmt = lambda_stmt(lambda: update(User)) stmt += lambda s: s.values({"age": User.age - new_value}) stmt += lambda s: s.where(User.age > 29).execution_options( synchronize_session="evaluate" ) else: stmt = lambda_stmt( lambda: update(User) .where(User.age > 29) .values({User.age: User.age - 10}) .execution_options(synchronize_session="evaluate") ) sess.execute(stmt) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 29, 27])), ) sess.query(User).filter(User.age > 27).update( {users.c.age_int: User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 27, 19, 27])), ) sess.query(User).filter(User.age == 25).update( {User.age: User.age - 10}, synchronize_session="fetch" ) eq_([john.age, jack.age, jill.age, jane.age], [15, 27, 19, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([15, 27, 19, 27])), ) @testing.combinations( ("fetch", False), ("fetch", True), ("evaluate", False), ("evaluate", True), ) def test_update_with_loader_criteria(self, fetchstyle, future): User = self.classes.User sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) sess.execute( update(User) .options( with_loader_criteria(User, User.name.in_(["jill", "jane"])) ) .where(User.age > 29) .values(age=User.age - 10) .execution_options(synchronize_session=fetchstyle) ) eq_([john.age, jack.age, jill.age, jane.age], [25, 47, 29, 27]) eq_( sess.execute(select(User.age).order_by(User.id)).all(), list(zip([25, 47, 29, 27])), ) @testing.combinations( ("fetch", False), ("fetch", True), ("evaluate", False), ("evaluate", True), ) def test_delete_with_loader_criteria(self, fetchstyle, future): User = self.classes.User sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) sess.execute( delete(User) .options( with_loader_criteria(User, User.name.in_(["jill", "jane"])) ) .where(User.age > 29) .execution_options(synchronize_session=fetchstyle) ) assert jane not in sess assert jack in sess eq_( sess.execute(select(User.age).order_by(User.id)).all(), list(zip([25, 47, 29])), ) def test_update_against_table_col(self): User, users = self.classes.User, self.tables.users sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() eq_([john.age, jack.age, jill.age, jane.age], [25, 47, 29, 37]) sess.query(User).filter(User.age > 27).update( {users.c.age_int: User.age - 10}, synchronize_session="evaluate" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 19, 27]) def test_update_against_metadata(self): User, users = self.classes.User, self.tables.users sess = fixture_session() sess.query(users).update( {users.c.age_int: 29}, synchronize_session=False ) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([29, 29, 29, 29])), ) def test_update_with_bindparams(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter(text("age_int > :x")).params(x=29).update( {"age": User.age - 10}, synchronize_session="fetch" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 37, 29, 27])), ) def test_update_fetch_returning(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() with self.sql_execution_asserter() as asserter: sess.query(User).filter(User.age > 29).update( {"age": User.age - 10}, synchronize_session="fetch" ) # these are simple values, these are now evaluated even with # the "fetch" strategy, new in 1.4, so there is no expiry eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) if testing.db.dialect.full_returning: asserter.assert_( CompiledSQL( "UPDATE users SET age_int=(users.age_int - %(age_int_1)s) " "WHERE users.age_int > %(age_int_2)s RETURNING users.id", [{"age_int_1": 10, "age_int_2": 29}], dialect="postgresql", ), ) else: asserter.assert_( CompiledSQL( "SELECT users.id FROM users " "WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), CompiledSQL( "UPDATE users SET age_int=(users.age_int - :age_int_1) " "WHERE users.age_int > :age_int_2", [{"age_int_1": 10, "age_int_2": 29}], ), ) def test_update_fetch_returning_lambda(self): User = self.classes.User sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) with self.sql_execution_asserter() as asserter: stmt = lambda_stmt( lambda: update(User) .where(User.age > 29) .values({"age": User.age - 10}) ) sess.execute( stmt, execution_options={"synchronize_session": "fetch"} ) # these are simple values, these are now evaluated even with # the "fetch" strategy, new in 1.4, so there is no expiry eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) if testing.db.dialect.full_returning: asserter.assert_( CompiledSQL( "UPDATE users SET age_int=(users.age_int - %(age_int_1)s) " "WHERE users.age_int > %(age_int_2)s RETURNING users.id", [{"age_int_1": 10, "age_int_2": 29}], dialect="postgresql", ), ) else: asserter.assert_( CompiledSQL( "SELECT users.id FROM users " "WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), CompiledSQL( "UPDATE users SET age_int=(users.age_int - :age_int_1) " "WHERE users.age_int > :age_int_2", [{"age_int_1": 10, "age_int_2": 29}], ), ) @testing.requires.full_returning def test_update_explicit_returning(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() with self.sql_execution_asserter() as asserter: stmt = ( update(User) .filter(User.age > 29) .values({"age": User.age - 10}) .returning(User.id) ) rows = sess.execute(stmt).all() eq_(set(rows), {(2,), (4,)}) # these are simple values, these are now evaluated even with # the "fetch" strategy, new in 1.4, so there is no expiry eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) asserter.assert_( CompiledSQL( "UPDATE users SET age_int=(users.age_int - %(age_int_1)s) " "WHERE users.age_int > %(age_int_2)s RETURNING users.id", [{"age_int_1": 10, "age_int_2": 29}], dialect="postgresql", ), ) @testing.requires.full_returning def test_no_fetch_w_explicit_returning(self): User = self.classes.User sess = fixture_session() stmt = ( update(User) .filter(User.age > 29) .values({"age": User.age - 10}) .execution_options(synchronize_session="fetch") .returning(User.id) ) with expect_raises_message( exc.InvalidRequestError, r"Can't use synchronize_session='fetch' " r"with explicit returning\(\)", ): sess.execute(stmt) def test_delete_fetch_returning(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() in_(john, sess) in_(jack, sess) with self.sql_execution_asserter() as asserter: sess.query(User).filter(User.age > 29).delete( synchronize_session="fetch" ) if testing.db.dialect.full_returning: asserter.assert_( CompiledSQL( "DELETE FROM users WHERE users.age_int > %(age_int_1)s " "RETURNING users.id", [{"age_int_1": 29}], dialect="postgresql", ), ) else: asserter.assert_( CompiledSQL( "SELECT users.id FROM users " "WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), CompiledSQL( "DELETE FROM users WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), ) in_(john, sess) not_in(jack, sess) in_(jill, sess) not_in(jane, sess) def test_delete_fetch_returning_lambda(self): User = self.classes.User sess = Session(testing.db, future=True) john, jack, jill, jane = ( sess.execute(select(User).order_by(User.id)).scalars().all() ) in_(john, sess) in_(jack, sess) with self.sql_execution_asserter() as asserter: stmt = lambda_stmt(lambda: delete(User).where(User.age > 29)) sess.execute( stmt, execution_options={"synchronize_session": "fetch"} ) if testing.db.dialect.full_returning: asserter.assert_( CompiledSQL( "DELETE FROM users WHERE users.age_int > %(age_int_1)s " "RETURNING users.id", [{"age_int_1": 29}], dialect="postgresql", ), ) else: asserter.assert_( CompiledSQL( "SELECT users.id FROM users " "WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), CompiledSQL( "DELETE FROM users WHERE users.age_int > :age_int_1", [{"age_int_1": 29}], ), ) in_(john, sess) not_in(jack, sess) in_(jill, sess) not_in(jane, sess) def test_update_with_filter_statement(self): """test for [ticket:4556]""" User = self.classes.User sess = fixture_session() assert_raises( exc.ArgumentError, lambda: sess.query(User.name == "filter").update( {"name": "update"} ), ) def test_update_without_load(self): User = self.classes.User sess = fixture_session() sess.query(User).filter(User.id == 3).update( {"age": 44}, synchronize_session="fetch" ) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 47, 44, 37])), ) def test_update_changes_resets_dirty(self): User = self.classes.User sess = fixture_session(autoflush=False) john, jack, jill, jane = sess.query(User).order_by(User.id).all() john.age = 50 jack.age = 37 # autoflush is false. therefore our '50' and '37' are getting # blown away by this operation. sess.query(User).filter(User.age > 29).update( {"age": User.age - 10}, synchronize_session="evaluate" ) for x in (john, jack, jill, jane): assert not sess.is_modified(x) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) john.age = 25 assert john in sess.dirty assert jack in sess.dirty assert jill not in sess.dirty assert not sess.is_modified(john) assert not sess.is_modified(jack) def test_update_changes_with_autoflush(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() john.age = 50 jack.age = 37 sess.query(User).filter(User.age > 29).update( {"age": User.age - 10}, synchronize_session="evaluate" ) for x in (john, jack, jill, jane): assert not sess.is_modified(x) eq_([john.age, jack.age, jill.age, jane.age], [40, 27, 29, 27]) john.age = 25 assert john in sess.dirty assert jack not in sess.dirty assert jill not in sess.dirty assert sess.is_modified(john) assert not sess.is_modified(jack) def test_update_with_expire_strategy(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).filter(User.age > 29).update( {"age": User.age - 10}, synchronize_session="fetch" ) eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 37, 29, 27])), ) @testing.fails_if(lambda: not testing.db.dialect.supports_sane_rowcount) def test_update_returns_rowcount(self): User = self.classes.User sess = fixture_session() rowcount = ( sess.query(User) .filter(User.age > 29) .update({"age": User.age + 0}) ) eq_(rowcount, 2) rowcount = ( sess.query(User) .filter(User.age > 29) .update({"age": User.age - 10}) ) eq_(rowcount, 2) # test future result = sess.execute( update(User).where(User.age > 19).values({"age": User.age - 10}) ) eq_(result.rowcount, 4) @testing.fails_if(lambda: not testing.db.dialect.supports_sane_rowcount) def test_delete_returns_rowcount(self): User = self.classes.User sess = fixture_session() rowcount = ( sess.query(User) .filter(User.age > 26) .delete(synchronize_session=False) ) eq_(rowcount, 3) def test_update_all(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).update({"age": 42}, synchronize_session="evaluate") eq_([john.age, jack.age, jill.age, jane.age], [42, 42, 42, 42]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([42, 42, 42, 42])), ) def test_delete_all(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).delete(synchronize_session="evaluate") assert not ( john in sess or jack in sess or jill in sess or jane in sess ) eq_(sess.query(User).count(), 0) def test_autoflush_before_evaluate_update(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() john.name = "j2" sess.query(User).filter_by(name="j2").update( {"age": 42}, synchronize_session="evaluate" ) eq_(john.age, 42) def test_autoflush_before_fetch_update(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() john.name = "j2" sess.query(User).filter_by(name="j2").update( {"age": 42}, synchronize_session="fetch" ) eq_(john.age, 42) def test_autoflush_before_evaluate_delete(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() john.name = "j2" sess.query(User).filter_by(name="j2").delete( synchronize_session="evaluate" ) assert john not in sess def test_autoflush_before_fetch_delete(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() john.name = "j2" sess.query(User).filter_by(name="j2").delete( synchronize_session="fetch" ) assert john not in sess def test_evaluate_before_update(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() sess.expire(john, ["age"]) # eval must be before the update. otherwise # we eval john, age has been expired and doesn't # match the new value coming in sess.query(User).filter_by(name="john").filter_by(age=25).update( {"name": "j2", "age": 40}, synchronize_session="evaluate" ) eq_(john.name, "j2") eq_(john.age, 40) def test_fetch_before_update(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() sess.expire(john, ["age"]) sess.query(User).filter_by(name="john").filter_by(age=25).update( {"name": "j2", "age": 40}, synchronize_session="fetch" ) eq_(john.name, "j2") eq_(john.age, 40) def test_evaluate_before_delete(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() sess.expire(john, ["age"]) sess.query(User).filter_by(name="john").filter_by(age=25).delete( synchronize_session="evaluate" ) assert john not in sess def test_fetch_before_delete(self): User = self.classes.User sess = fixture_session() john = sess.query(User).filter_by(name="john").one() sess.expire(john, ["age"]) sess.query(User).filter_by(name="john").filter_by(age=25).delete( synchronize_session="fetch" ) assert john not in sess def test_update_unordered_dict(self): User = self.classes.User session = fixture_session() # Do an update using unordered dict and check that the parameters used # are ordered in table order m1 = testing.mock.Mock() @event.listens_for(session, "after_bulk_update") def do_orm_execute(bulk_ud): m1(bulk_ud.result.context.compiled.compile_state.statement) q = session.query(User) q.filter(User.id == 15).update({"name": "foob", "age": 123}) assert m1.mock_calls[0][1][0]._values def test_update_preserve_parameter_order_query(self): User = self.classes.User session = fixture_session() # Do update using a tuple and check that order is preserved m1 = testing.mock.Mock() @event.listens_for(session, "after_bulk_update") def do_orm_execute(bulk_ud): cols = [ c.key for c, v in ( ( bulk_ud.result.context ).compiled.compile_state.statement._ordered_values ) ] m1(cols) q = session.query(User) q.filter(User.id == 15).update( (("age", 123), ("name", "foob")), update_args={"preserve_parameter_order": True}, ) eq_(m1.mock_calls[0][1][0], ["age_int", "name"]) m1.mock_calls = [] q = session.query(User) q.filter(User.id == 15).update( [("name", "foob"), ("age", 123)], update_args={"preserve_parameter_order": True}, ) eq_(m1.mock_calls[0][1][0], ["name", "age_int"]) def test_update_multi_values_error_future(self): User = self.classes.User session = Session(testing.db, future=True) # Do update using a tuple and check that order is preserved stmt = ( update(User) .filter(User.id == 15) .values([("id", 123), ("name", "foob")]) ) assert_raises_message( exc.InvalidRequestError, "UPDATE construct does not support multiple parameter sets.", session.execute, stmt, ) def test_update_preserve_parameter_order_future(self): User = self.classes.User session = Session(testing.db, future=True) # Do update using a tuple and check that order is preserved stmt = ( update(User) .filter(User.id == 15) .ordered_values(("age", 123), ("name", "foob")) ) result = session.execute(stmt) cols = [ c.key for c, v in ( ( result.context ).compiled.compile_state.statement._ordered_values ) ] eq_(["age_int", "name"], cols) # Now invert the order and use a list instead, and check that order is # also preserved stmt = ( update(User) .filter(User.id == 15) .ordered_values( ("name", "foob"), ("age", 123), ) ) result = session.execute(stmt) cols = [ c.key for c, v in ( result.context ).compiled.compile_state.statement._ordered_values ] eq_(["name", "age_int"], cols) @testing.combinations(("update",), ("delete",), argnames="stmt_type") @testing.combinations( ("evaluate",), ("fetch",), (None,), argnames="sync_type" ) def test_routing_session(self, stmt_type, sync_type, connection): User = self.classes.User if stmt_type == "update": stmt = update(User).values(age=123) expected = [Update] elif stmt_type == "delete": stmt = delete(User) expected = [Delete] else: assert False received = [] class RoutingSession(Session): def get_bind(self, **kw): received.append(type(kw["clause"])) return super(RoutingSession, self).get_bind(**kw) stmt = stmt.execution_options(synchronize_session=sync_type) if sync_type == "fetch": expected.insert(0, Select) if not connection.dialect.full_returning: expected.insert(0, Select) with RoutingSession(bind=connection) as sess: sess.execute(stmt) eq_(received, expected) class UpdateDeleteIgnoresLoadersTest(fixtures.MappedTest): @classmethod def define_tables(cls, metadata): Table( "users", metadata, Column( "id", Integer, primary_key=True, test_needs_autoincrement=True ), Column("name", String(32)), Column("age", Integer), ) Table( "documents", metadata, Column( "id", Integer, primary_key=True, test_needs_autoincrement=True ), Column("user_id", None, ForeignKey("users.id")), Column("title", String(32)), ) @classmethod def setup_classes(cls): class User(cls.Comparable): pass class Document(cls.Comparable): pass @classmethod def insert_data(cls, connection): users = cls.tables.users connection.execute( users.insert(), [ dict(id=1, name="john", age=25), dict(id=2, name="jack", age=47), dict(id=3, name="jill", age=29), dict(id=4, name="jane", age=37), ], ) documents = cls.tables.documents connection.execute( documents.insert(), [ dict(id=1, user_id=1, title="foo"), dict(id=2, user_id=1, title="bar"), dict(id=3, user_id=2, title="baz"), ], ) @classmethod def setup_mappers(cls): documents, Document, User, users = ( cls.tables.documents, cls.classes.Document, cls.classes.User, cls.tables.users, ) cls.mapper_registry.map_imperatively(User, users) cls.mapper_registry.map_imperatively( Document, documents, properties={ "user": relationship( User, lazy="joined", backref=backref("documents", lazy="select"), ) }, ) def test_update_with_eager_relationships(self): Document = self.classes.Document sess = fixture_session() foo, bar, baz = sess.query(Document).order_by(Document.id).all() sess.query(Document).filter(Document.user_id == 1).update( {"title": Document.title + Document.title}, synchronize_session="fetch", ) eq_([foo.title, bar.title, baz.title], ["foofoo", "barbar", "baz"]) eq_( sess.query(Document.title).order_by(Document.id).all(), list(zip(["foofoo", "barbar", "baz"])), ) def test_update_with_explicit_joinedload(self): User = self.classes.User sess = fixture_session() john, jack, jill, jane = sess.query(User).order_by(User.id).all() sess.query(User).options(joinedload(User.documents)).filter( User.age > 29 ).update({"age": User.age - 10}, synchronize_session="fetch") eq_([john.age, jack.age, jill.age, jane.age], [25, 37, 29, 27]) eq_( sess.query(User.age).order_by(User.id).all(), list(zip([25, 37, 29, 27])), ) def test_delete_with_eager_relationships(self): Document = self.classes.Document sess = fixture_session() sess.query(Document).filter(Document.user_id == 1).delete( synchronize_session=False ) eq_(sess.query(Document.title).all(), list(zip(["baz"]))) class UpdateDeleteFromTest(fixtures.MappedTest): __backend__ = True @classmethod def define_tables(cls, metadata): Table( "users", metadata, Column("id", Integer, primary_key=True), Column("samename", String(10)), ) Table( "documents", metadata, Column("id", Integer, primary_key=True), Column("user_id", None, ForeignKey("users.id")), Column("title", String(32)), Column("flag", Boolean), Column("samename", String(10)), ) @classmethod def setup_classes(cls): class User(cls.Comparable): pass class Document(cls.Comparable): pass @classmethod def insert_data(cls, connection): users = cls.tables.users connection.execute( users.insert(), [dict(id=1), dict(id=2), dict(id=3), dict(id=4)] ) documents = cls.tables.documents connection.execute( documents.insert(), [ dict(id=1, user_id=1, title="foo"), dict(id=2, user_id=1, title="bar"), dict(id=3, user_id=2, title="baz"), dict(id=4, user_id=2, title="hoho"), dict(id=5, user_id=3, title="lala"), dict(id=6, user_id=3, title="bleh"), ], ) @classmethod def setup_mappers(cls): documents, Document, User, users = ( cls.tables.documents, cls.classes.Document, cls.classes.User, cls.tables.users, ) cls.mapper_registry.map_imperatively(User, users) cls.mapper_registry.map_imperatively( Document, documents, properties={"user": relationship(User, backref="documents")}, ) @testing.requires.update_from def test_update_from_joined_subq_test(self): Document = self.classes.Document s = fixture_session() subq = ( s.query(func.max(Document.title).label("title")) .group_by(Document.user_id) .subquery() ) s.query(Document).filter(Document.title == subq.c.title).update( {"flag": True}, synchronize_session=False ) eq_( set(s.query(Document.id, Document.flag)), set( [ (1, True), (2, None), (3, None), (4, True), (5, True), (6, None), ] ), ) @testing.requires.delete_from def test_delete_from_joined_subq_test(self): Document = self.classes.Document s = fixture_session() subq = ( s.query(func.max(Document.title).label("title")) .group_by(Document.user_id) .subquery() ) s.query(Document).filter(Document.title == subq.c.title).delete( synchronize_session=False ) eq_( set(s.query(Document.id, Document.flag)), set([(2, None), (3, None), (6, None)]), ) def test_no_eval_against_multi_table_criteria(self): User = self.classes.User Document = self.classes.Document s = fixture_session() q = s.query(User).filter(User.id == Document.user_id) assert_raises_message( exc.InvalidRequestError, "Could not evaluate current criteria in Python.", q.update, {"samename": "ed"}, ) @testing.requires.multi_table_update def test_multi_table_criteria_ok_wo_eval(self): User = self.classes.User Document = self.classes.Document s = fixture_session() q = s.query(User).filter(User.id == Document.user_id) q.update({Document.samename: "ed"}, synchronize_session="fetch") eq_( s.query(User.id, Document.samename, User.samename) .filter(User.id == Document.user_id) .order_by(User.id) .all(), [ (1, "ed", None), (1, "ed", None), (2, "ed", None), (2, "ed", None), (3, "ed", None), (3, "ed", None), ], ) @testing.requires.update_where_target_in_subquery def test_update_using_in(self): Document = self.classes.Document s = fixture_session() subq = ( s.query(func.max(Document.title).label("title")) .group_by(Document.user_id) .scalar_subquery() ) s.query(Document).filter(Document.title.in_(subq)).update( {"flag": True}, synchronize_session=False ) eq_( set(s.query(Document.id, Document.flag)), set( [ (1, True), (2, None), (3, None), (4, True), (5, True), (6, None), ] ), ) @testing.requires.update_where_target_in_subquery @testing.requires.standalone_binds def test_update_using_case(self): Document = self.classes.Document s = fixture_session() subq = ( s.query(func.max(Document.title).label("title")) .group_by(Document.user_id) .scalar_subquery() ) # this would work with Firebird if you do literal_column('1') # instead case_stmt = case((Document.title.in_(subq), True), else_=False) s.query(Document).update( {"flag": case_stmt}, synchronize_session=False ) eq_( set(s.query(Document.id, Document.flag)), set( [ (1, True), (2, False), (3, False), (4, True), (5, True), (6, False), ] ), ) @testing.requires.multi_table_update def test_update_from_multitable_same_names(self): Document = self.classes.Document User = self.classes.User s = fixture_session() s.query(Document).filter(User.id == Document.user_id).filter( User.id == 2 ).update( {Document.samename: "d_samename", User.samename: "u_samename"}, synchronize_session=False, ) eq_( s.query(User.id, Document.samename, User.samename) .filter(User.id == Document.user_id) .order_by(User.id) .all(), [ (1, None, None), (1, None, None), (2, "d_samename", "u_samename"), (2, "d_samename", "u_samename"), (3, None, None), (3, None, None), ], ) class ExpressionUpdateTest(fixtures.MappedTest): @classmethod def define_tables(cls, metadata): Table( "data", metadata, Column( "id", Integer, primary_key=True, test_needs_autoincrement=True ), Column("counter", Integer, nullable=False, default=0), ) @classmethod def setup_classes(cls): class Data(cls.Comparable): pass @classmethod def setup_mappers(cls): data = cls.tables.data cls.mapper_registry.map_imperatively( cls.classes.Data, data, properties={"cnt": data.c.counter} ) @testing.provide_metadata def test_update_attr_names(self): Data = self.classes.Data d1 = Data() sess = fixture_session() sess.add(d1) sess.commit() eq_(d1.cnt, 0) sess.query(Data).update({Data.cnt: Data.cnt + 1}) sess.flush() eq_(d1.cnt, 1) sess.query(Data).update({Data.cnt: Data.cnt + 1}, "fetch") sess.flush() eq_(d1.cnt, 2) sess.close() def test_update_args(self): Data = self.classes.Data session = fixture_session() update_args = {"mysql_limit": 1} m1 = testing.mock.Mock() @event.listens_for(session, "after_bulk_update") def do_orm_execute(bulk_ud): update_stmt = ( bulk_ud.result.context.compiled.compile_state.statement ) m1(update_stmt) q = session.query(Data) q.update({Data.cnt: Data.cnt + 1}, update_args=update_args) update_stmt = m1.mock_calls[0][1][0] eq_(update_stmt.dialect_kwargs, update_args) class InheritTest(fixtures.DeclarativeMappedTest): run_inserts = "each" run_deletes = "each" __backend__ = True @classmethod def setup_classes(cls): Base = cls.DeclarativeBasic class Person(Base): __tablename__ = "person" id = Column( Integer, primary_key=True, test_needs_autoincrement=True ) type = Column(String(50)) name = Column(String(50)) class Engineer(Person): __tablename__ = "engineer" id = Column(Integer, ForeignKey("person.id"), primary_key=True) engineer_name = Column(String(50)) class Manager(Person): __tablename__ = "manager" id = Column(Integer, ForeignKey("person.id"), primary_key=True) manager_name = Column(String(50)) @classmethod def insert_data(cls, connection): Engineer, Person, Manager = ( cls.classes.Engineer, cls.classes.Person, cls.classes.Manager, ) s = Session(connection) s.add_all( [ Engineer(name="e1", engineer_name="e1"), Manager(name="m1", manager_name="m1"), Engineer(name="e2", engineer_name="e2"), Person(name="p1"), ] ) s.commit() @testing.only_on("mysql", "Multi table update") def test_update_from_join_no_problem(self): person = self.classes.Person.__table__ engineer = self.classes.Engineer.__table__ sess = Session(testing.db, future=True) sess.query(person.join(engineer)).filter(person.c.name == "e2").update( {person.c.name: "updated", engineer.c.engineer_name: "e2a"}, ) obj = sess.execute( select(self.classes.Engineer).filter( self.classes.Engineer.name == "updated" ) ).scalar() eq_(obj.name, "updated") eq_(obj.engineer_name, "e2a") def test_update_subtable_only(self): Engineer = self.classes.Engineer s = Session(testing.db) s.query(Engineer).update({"engineer_name": "e5"}) eq_(s.query(Engineer.engineer_name).all(), [("e5",), ("e5",)]) @testing.requires.update_from def test_update_from(self): Engineer = self.classes.Engineer Person = self.classes.Person s = Session(testing.db) s.query(Engineer).filter(Engineer.id == Person.id).filter( Person.name == "e2" ).update({"engineer_name": "e5"}) eq_( set(s.query(Person.name, Engineer.engineer_name)), set([("e1", "e1"), ("e2", "e5")]), ) @testing.requires.delete_from def test_delete_from(self): Engineer = self.classes.Engineer Person = self.classes.Person s = Session(testing.db) s.query(Engineer).filter(Engineer.id == Person.id).filter( Person.name == "e2" ).delete() eq_( set(s.query(Person.name, Engineer.engineer_name)), set([("e1", "e1")]), ) @testing.only_on("mysql", "Multi table update") def test_update_from_multitable(self): Engineer = self.classes.Engineer Person = self.classes.Person s = Session(testing.db) s.query(Engineer).filter(Engineer.id == Person.id).filter( Person.name == "e2" ).update({Person.name: "e22", Engineer.engineer_name: "e55"}) eq_( set(s.query(Person.name, Engineer.engineer_name)), set([("e1", "e1"), ("e22", "e55")]), ) class SingleTablePolymorphicTest(fixtures.DeclarativeMappedTest): __backend__ = True @classmethod def setup_classes(cls): Base = cls.DeclarativeBasic class Staff(Base): __tablename__ = "staff" position = Column(String(10), nullable=False) id = Column( Integer, primary_key=True, test_needs_autoincrement=True ) name = Column(String(5)) stats = Column(String(5)) __mapper_args__ = {"polymorphic_on": position} class Sales(Staff): sales_stats = Column(String(5)) __mapper_args__ = {"polymorphic_identity": "sales"} class Support(Staff): support_stats = Column(String(5)) __mapper_args__ = {"polymorphic_identity": "support"} @classmethod def insert_data(cls, connection): with sessionmaker(connection).begin() as session: Sales, Support = ( cls.classes.Sales, cls.classes.Support, ) session.add_all( [ Sales(name="n1", sales_stats="1", stats="a"), Sales(name="n2", sales_stats="2", stats="b"), Support(name="n1", support_stats="3", stats="c"), Support(name="n2", support_stats="4", stats="d"), ] ) @testing.combinations( ("fetch", False), ("fetch", True), ("evaluate", False), ("evaluate", True), ) def test_update(self, fetchstyle, future): Staff, Sales, Support = self.classes("Staff", "Sales", "Support") sess = fixture_session() en1, en2 = ( sess.execute(select(Sales).order_by(Sales.sales_stats)) .scalars() .all() ) mn1, mn2 = ( sess.execute(select(Support).order_by(Support.support_stats)) .scalars() .all() ) if future: sess.execute( update(Sales) .filter_by(name="n1") .values(stats="p") .execution_options(synchronize_session=fetchstyle) ) else: sess.query(Sales).filter_by(name="n1").update( {"stats": "p"}, synchronize_session=fetchstyle ) eq_(en1.stats, "p") eq_(mn1.stats, "c") eq_( sess.execute( select(Staff.position, Staff.name, Staff.stats).order_by( Staff.id ) ).all(), [ ("sales", "n1", "p"), ("sales", "n2", "b"), ("support", "n1", "c"), ("support", "n2", "d"), ], ) @testing.combinations( ("fetch", False), ("fetch", True), ("evaluate", False), ("evaluate", True), ) def test_delete(self, fetchstyle, future): Staff, Sales, Support = self.classes("Staff", "Sales", "Support") sess = fixture_session() en1, en2 = sess.query(Sales).order_by(Sales.sales_stats).all() mn1, mn2 = sess.query(Support).order_by(Support.support_stats).all() if future: sess.execute( delete(Sales) .filter_by(name="n1") .execution_options(synchronize_session=fetchstyle) ) else: sess.query(Sales).filter_by(name="n1").delete( synchronize_session=fetchstyle ) assert en1 not in sess assert en2 in sess assert mn1 in sess assert mn2 in sess eq_( sess.execute( select(Staff.position, Staff.name, Staff.stats).order_by( Staff.id ) ).all(), [ ("sales", "n2", "b"), ("support", "n1", "c"), ("support", "n2", "d"), ], ) class LoadFromReturningTest(fixtures.MappedTest): __backend__ = True __requires__ = ("full_returning",) @classmethod def define_tables(cls, metadata): Table( "users", metadata, Column( "id", Integer, primary_key=True, test_needs_autoincrement=True ), Column("name", String(32)), Column("age_int", Integer), ) @classmethod def setup_classes(cls): class User(cls.Comparable): pass class Address(cls.Comparable): pass @classmethod def insert_data(cls, connection): users = cls.tables.users connection.execute( users.insert(), [ dict(id=1, name="john", age_int=25), dict(id=2, name="jack", age_int=47), dict(id=3, name="jill", age_int=29), dict(id=4, name="jane", age_int=37), ], ) @classmethod def setup_mappers(cls): User = cls.classes.User users = cls.tables.users cls.mapper_registry.map_imperatively( User, users, properties={ "age": users.c.age_int, }, ) def test_load_from_update(self, connection): User = self.classes.User stmt = ( update(User) .where(User.name.in_(["jack", "jill"])) .values(age=User.age + 5) .returning(User) ) stmt = select(User).from_statement(stmt) with Session(connection) as sess: rows = sess.execute(stmt).scalars().all() eq_( rows, [User(name="jack", age=52), User(name="jill", age=34)], ) @testing.combinations( ("single",), ("multiple", testing.requires.multivalues_inserts), argnames="params", ) def test_load_from_insert(self, connection, params): User = self.classes.User if params == "multiple": values = [ {User.id: 5, User.age: 25, User.name: "spongebob"}, {User.id: 6, User.age: 30, User.name: "patrick"}, {User.id: 7, User.age: 35, User.name: "squidward"}, ] elif params == "single": values = {User.id: 5, User.age: 25, User.name: "spongebob"} else: assert False stmt = insert(User).values(values).returning(User) stmt = select(User).from_statement(stmt) with Session(connection) as sess: rows = sess.execute(stmt).scalars().all() if params == "multiple": eq_( rows, [ User(name="spongebob", age=25), User(name="patrick", age=30), User(name="squidward", age=35), ], ) elif params == "single": eq_( rows, [User(name="spongebob", age=25)], ) else: assert False