base.py 文件源码

def visit_binary(self, binary, **kwargs):
        """Move bind parameters to the right-hand side of an operator, where
        possible.

        """
        if (
            isinstance(binary.left, expression.BindParameter)
            and binary.operator == operator.eq
            and not isinstance(binary.right, expression.BindParameter)
        ):
            return self.process(
                expression.BinaryExpression(binary.right,
                                            binary.left,
                                            binary.operator),
                **kwargs)
        return super(MSSQLCompiler, self).visit_binary(binary, **kwargs)