mysqlcall语句调用存储过程并传递错误代码,示例如下:
mysql> delimiter $$ mysql> CREATE PROCEDURE myProc() //创建mysql存储过程 -> MODIFIES SQL DATA -> BEGIN -> DECLARE l_status VARCHAR(20); -> -> CALL myProc1(l_status); -> IF l_status='Duplicate Entry' THEN -> SELECT CONCAT('Warning: using existing definition for location ') AS warning; -> END IF; -> END$$ Query OK, 0 rows affected (0.00 sec) mysql> CREATE PROCEDURE myProc1(OUT out_status VARCHAR(30)) //创建mysql存储过程 -> BEGIN -> set out_status = 'Duplicate Entry'; -> END$$ Query OK, 0 rows affected (0.00 sec) mysql> delimiter ; mysql> call myProc(); //调用mysql存储过程 +--------------------------------------------------+ | 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; //删除mysql存储过程 Query OK, 0 rows affected (0.00 sec) mysql> drop procedure myProc1; //删除mysql存储过程 Query OK, 0 rows affected (0.00 sec)