本文整理汇总了Python中sqlalchemy.dialects.postgresql.BIGINT属性的典型用法代码示例。如果您正苦于以下问题：Python postgresql.BIGINT属性的具体用法？Python postgresql.BIGINT怎么用？Python postgresql.BIGINT使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类sqlalchemy.dialects.postgresql的用法示例。
在下文中一共展示了postgresql.BIGINT属性的3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_column_adaptation
# 需要导入模块: from sqlalchemy.dialects import postgresql [as 别名]
# 或者: from sqlalchemy.dialects.postgresql import BIGINT [as 别名]
def test_column_adaptation(metadata):
Table("simple_items", metadata, Column("id", postgresql.BIGINT), Column("length", postgresql.DOUBLE_PRECISION))
assert (
generate_code(metadata)
== """\
# coding: utf-8
from sqlalchemy import BigInteger, Column, Float, MetaData, Table
metadata = MetaData()
t_simple_items = Table(
'simple_items', metadata,
Column('id', BigInteger),
Column('length', Float)
)
"""
) 示例2: autogen_column_reflect
# 需要导入模块: from sqlalchemy.dialects import postgresql [as 别名]
# 或者: from sqlalchemy.dialects.postgresql import BIGINT [as 别名]
def autogen_column_reflect(self, inspector, table, column_info):
if column_info.get('default') and \
isinstance(column_info['type'], (INTEGER, BIGINT)):
seq_match = re.match(
r"nextval\('(.+?)'::regclass\)",
column_info['default'])
if seq_match:
info = inspector.bind.execute(text(
"select c.relname, a.attname "
"from pg_class as c join pg_depend d on d.objid=c.oid and "
"d.classid='pg_class'::regclass and "
"d.refclassid='pg_class'::regclass "
"join pg_class t on t.oid=d.refobjid "
"join pg_attribute a on a.attrelid=t.oid and "
"a.attnum=d.refobjsubid "
"where c.relkind='S' and c.relname=:seqname"
), seqname=seq_match.group(1)).first()
if info:
seqname, colname = info
if colname == column_info['name']:
log.info(
"Detected sequence named '%s' as "
"owned by integer column '%s(%s)', "
"assuming SERIAL and omitting",
seqname, table.name, colname)
# sequence, and the owner is this column,
# its a SERIAL - whack it!
del column_info['default'] 示例3: autogen_column_reflect
# 需要导入模块: from sqlalchemy.dialects import postgresql [as 别名]
# 或者: from sqlalchemy.dialects.postgresql import BIGINT [as 别名]
def autogen_column_reflect(self, inspector, table, column_info):
if column_info.get("default") and isinstance(
column_info["type"], (INTEGER, BIGINT)
):
seq_match = re.match(
r"nextval\('(.+?)'::regclass\)", column_info["default"]
)
if seq_match:
info = sqla_compat._exec_on_inspector(
inspector,
text(
"select c.relname, a.attname "
"from pg_class as c join "
"pg_depend d on d.objid=c.oid and "
"d.classid='pg_class'::regclass and "
"d.refclassid='pg_class'::regclass "
"join pg_class t on t.oid=d.refobjid "
"join pg_attribute a on a.attrelid=t.oid and "
"a.attnum=d.refobjsubid "
"where c.relkind='S' and c.relname=:seqname"
),
seqname=seq_match.group(1),
).first()
if info:
seqname, colname = info
if colname == column_info["name"]:
log.info(
"Detected sequence named '%s' as "
"owned by integer column '%s(%s)', "
"assuming SERIAL and omitting",
seqname,
table.name,
colname,
)
# sequence, and the owner is this column,
# its a SERIAL - whack it!
del column_info["default"]