ops.py 文件源码

def batch_create_primary_key(cls, operations, constraint_name, columns):
        """Issue a "create primary key" instruction using the
        current batch migration context.

        The batch form of this call omits the ``table_name`` and ``schema``
        arguments from the call.

        .. seealso::

            :meth:`.Operations.create_primary_key`

        """
        op = cls(
            constraint_name, operations.impl.table_name, columns,
            schema=operations.impl.schema
        )
        return operations.invoke(op)