Question

我正在尝试使用sqlalchemy引擎将属性MultiSubnetFailover传递给连接字符串。虽然将参数传递给pyodbc非常流畅，但pymssql拒绝接受连接字符串中的任何参数。

这失败

attributes = "?driver=ODBC+Driver+17+for+sql+server"

engine = create_engine(
        'mssql+pymssql://' +
        "username" + ':' +
        "password" + '@' +
        "127.0.0.1" + "/" +
        "databaseName" + attributes)

错误

   Traceback (most recent call last):
  File "C:/Users/ChaitanyaB/PycharmProjects/Test/TestUpdate.py", line 35, in <module>
    (TblServices.OrganizationId == '72A229D4-186B-4B0E-A98F-7DB5DB3566DB')
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\query.py", line 2423, in all
    return list(self)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\query.py", line 2571, in __iter__
    return self._execute_and_instances(context)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\query.py", line 2584, in _execute_and_instances
    close_with_result=True)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\query.py", line 2575, in _connection_from_session
    **kw)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\session.py", line 893, in connection
    execution_options=execution_options)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\session.py", line 898, in _connection_for_bind
    engine, execution_options)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\orm\session.py", line 334, in _connection_for_bind
    conn = bind.contextual_connect()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\engine\base.py", line 2039, in contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\engine\base.py", line 2074, in _wrap_pool_connect
    return fn()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 376, in connect
    return _ConnectionFairy._checkout(self)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 713, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 480, in checkout
    rec = pool._do_get()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 1060, in _do_get
    self._dec_overflow()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\util\langhelpers.py", line 60, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 1057, in _do_get
    return self._create_connection()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 323, in _create_connection
    return _ConnectionRecord(self)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 449, in __init__
    self.connection = self.__connect()
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\pool.py", line 607, in __connect
    connection = self.__pool._invoke_creator(self)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\engine\strategies.py", line 97, in connect
    return dialect.connect(*cargs, **cparams)
  File "C:\Users\ChaitanyaB\NewVirtualEnvironment\lib\site-packages\sqlalchemy\engine\default.py", line 385, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "pymssql.pyx", line 578, in pymssql.connect (pymssql.c:9754)
TypeError: connect() got an unexpected keyword argument 'MultiSubnetFailover'

虽然我可以使用属性=＆＃34;＆＃34;

此外，与pyodbc相同的连接字符串

attributes = "?driver=ODBC+Driver+17+for+sql+server"

engine = create_engine(
        'mssql+pyodbc://' +
        "username" + ':' +
        "password" + '@' +
        "127.0.0.1" + "/" +
        "databaseName" + attributes)

我想知道在使用pymssql时是否有不同的方法来传递连接属性。任何帮助表示赞赏。

使用sqlalchemy的mssql + pymssql引擎不会在连接字符串中获取属性

0 个答案: