数据库|mysql教程
MySQL,存储,过程,相互,调用,获得,误码,演示,何在,
数据库-mysql教程
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演示如何在存储过程中调用另外一个存储过程，并获取执行的错误信息 MySQL mysqlmysql delimiter $$mysqlmysql CREATE PROCEDURE myProc() – MODIFIES SQL DATA – BEGIN – DECLARE l_status VARCHAR(20); – – CALL myProc1(l_status); – IF l_status=’Duplicat
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演示如何在存储过程中调用另外一个存储过程，并获取执行的错误信息
MySQL
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mysql>mysql> delimiter $$mysql>mysql> CREATE PROCEDURE myProc() ->MODIFIES SQL DATA -> BEGIN ->DECLARE l_status VARCHAR(20); -> ->CALL myProc1(l_status); -> IF l_status=Duplicate Entry THEN ->SELECT CONCAT(Warning: using existing definition for location ) AS warning; ->END IF; -> END$$Query OK, 0 rows affected (0.00 sec)mysql>mysql> CREATE PROCEDURE myProc1(OUT out_status VARCHAR(30)) -> BEGIN -> set out_status = Duplicate Entry; -> END$$Query OK, 0 rows affected (0.00 sec)mysql>mysql>mysql> delimiter ;mysql> call myProc();+--------------------------------------------------+| warning|+--------------------------------------------------+| Warning: using existing definition for location |+--------------------------------------------------+1 row in set (0.00 sec)Query OK, 0 rows affected (0.01 sec)mysql> drop procedure myProc;Query OK, 0 rows affected (0.00 sec)mysql> drop procedure myProc1;Query OK, 0 rows affected (0.00 sec)mysql>mysql>
