本文整理汇总了Python中sqlalchemy.testing.schema.Table.drop方法的典型用法代码示例。如果您正苦于以下问题：Python Table.drop方法的具体用法？Python Table.drop怎么用？Python Table.drop使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sqlalchemy.testing.schema.Table的用法示例。
在下文中一共展示了Table.drop方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_create_drop_bound
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_create_drop_bound(self):
for meta in (MetaData, ThreadLocalMetaData):
for bind in (
testing.db,
testing.db.connect()
):
metadata = meta()
table = Table('test_table', metadata,
Column('foo', Integer))
metadata.bind = bind
assert metadata.bind is table.bind is bind
metadata.create_all()
assert table.exists()
metadata.drop_all()
table.create()
table.drop()
assert not table.exists()
metadata = meta()
table = Table('test_table', metadata,
Column('foo', Integer))
metadata.bind = bind
assert metadata.bind is table.bind is bind
metadata.create_all()
assert table.exists()
metadata.drop_all()
table.create()
table.drop()
assert not table.exists()
if isinstance(bind, engine.Connection):
bind.close()示例2: test_fixed_char
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_fixed_char(self):
m = MetaData(testing.db)
t = Table('t1', m,
Column('id', Integer, primary_key=True),
Column('data', CHAR(30), nullable=False))
t.create()
try:
t.insert().execute(
dict(id=1, data="value 1"),
dict(id=2, data="value 2"),
dict(id=3, data="value 3")
)
eq_(
t.select().where(t.c.data == 'value 2').execute().fetchall(),
[(2, 'value 2 ')]
)
m2 = MetaData(testing.db)
t2 = Table('t1', m2, autoload=True)
assert type(t2.c.data.type) is CHAR
eq_(
t2.select().where(t2.c.data == 'value 2').execute().fetchall(),
[(2, 'value 2 ')]
)
finally:
t.drop()示例3: test_checkfirst_table
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_checkfirst_table(self):
m = MetaData()
s = Sequence("my_sequence")
t = Table('t', m, Column('c', Integer, s, primary_key=True))
t.create(testing.db, checkfirst=False)
assert self._has_sequence('my_sequence')
t.create(testing.db, checkfirst=True)
t.drop(testing.db, checkfirst=False)
assert not self._has_sequence('my_sequence')
t.drop(testing.db, checkfirst=True)示例4: test_create_drop_explicit
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_create_drop_explicit(self):
metadata = MetaData()
table = Table("test_table", metadata, Column("foo", Integer))
for bind in (testing.db, testing.db.connect()):
for args in [([], {"bind": bind}), ([bind], {})]:
metadata.create_all(*args[0], **args[1])
assert table.exists(*args[0], **args[1])
metadata.drop_all(*args[0], **args[1])
table.create(*args[0], **args[1])
table.drop(*args[0], **args[1])
assert not table.exists(*args[0], **args[1])示例5: test_create_drop_constructor_bound
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_create_drop_constructor_bound(self):
for bind in (testing.db, testing.db.connect()):
try:
for args in (([bind], {}), ([], {"bind": bind})):
metadata = MetaData(*args[0], **args[1])
table = Table(
"test_table", metadata, Column("foo", Integer)
)
assert metadata.bind is table.bind is bind
metadata.create_all()
assert table.exists()
metadata.drop_all()
table.create()
table.drop()
assert not table.exists()
finally:
if isinstance(bind, engine.Connection):
bind.close()示例6: test_rollback_deadlock
# 需要导入模块: from sqlalchemy.testing.schema import Table [as 别名]
# 或者: from sqlalchemy.testing.schema.Table import drop [as 别名]
def test_rollback_deadlock(self):
"""test that returning connections to the pool clears any object
locks."""
conn1 = testing.db.connect()
conn2 = testing.db.connect()
users = Table('deadlock_users', metadata, Column('user_id',
INT, primary_key=True), Column('user_name',
VARCHAR(20)), test_needs_acid=True)
users.create(conn1)
conn1.execute('select * from deadlock_users')
conn1.close()
# without auto-rollback in the connection pool's return() logic,
# this deadlocks in PostgreSQL, because conn1 is returned to the
# pool but still has a lock on "deadlock_users". comment out the
# rollback in pool/ConnectionFairy._close() to see !
users.drop(conn2)
conn2.close()