mysql存储过程中的错误怎样跟踪

DECLARE处理程序的使用： DECLARE handler_type HANDLER FOR condition_value[,...] sp_statement 其中, handler_type的取值范围：CONTINUE | EXIT | UNDO condition_value的取值范围：SQLSTATE [VALUE] sqlstate_value | condition_name | SQLWARNING | NOT FOUND | SQLEXCEPTION | my