MySQL 事务没有返回足够的错误消息来帮助调试

Question

以下事务运行没有问题。但是，一旦事务失败，例如列号不匹配，或者任何其他原因，它只会显示错误消息“'SQLWARNING: The request at Linux system time ${LINUX_SYSTEM_TIME} insert failed. Th data will被回滚'”，但没有错误消息显示实际的失败。我想知道是否有任何 MySQL 方法可以在 MySQL 事务中显示错误消息？谢谢。

       delimiter //

        CREATE PROCEDURE 123
        BEGIN

            DECLARE EXIT HANDLER FOR SQLWARNING

                BEGIN

                ROLLBACK;

                SELECT 'SQLWARNING: The request at Linux system time ${LINUX_SYSTEM_TIME} insert failed. Th data will be rollbacked';

                END;


            DECLARE EXIT HANDLER FOR SQLEXCEPTION

                BEGIN

                ROLLBACK;

                SELECT 'The request at Linux system time ${LINUX_SYSTEM_TIME} insert failed. Th data will be rollbacked';

                END;

            START TRANSACTION;

            <do whatever we need in transaction>

            COMMIT;

            END //

            CALL 123;

            DROP PROCEDURE IF EXISTS 

Answer 1

只是为了强调我从@@Solarflare 那里得到的答案。 Resignal 是一个简单的解决方案( MySQL exception handler access exception being handled ):

                DECLARE EXIT HANDLER FOR SQLWARNING

                BEGIN

                ROLLBACK;

                SELECT 'SQLWARNING: whatever error message';

                RESIGNAL;

                END;


            DECLARE EXIT HANDLER FOR SQLEXCEPTION

                BEGIN

                ROLLBACK;

                SELECT 'SQLWARNING: whatever error message;'

                RESIGNAL;

                END;