MySQL存储过程相互调用并获得错误码代码,MYSQL代码库,德仔网

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【MYSQL】 MySQL存储过程相互调用并获得错误码

作者:Dezai.CN / 发布于2011/6/15/ 873

<div>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)</div>
<div>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)</div>
<div>mysql>
mysql>
mysql> delimiter ;
mysql> call myProc();
+--------------------------------------------------+
| warning |
+--------------------------------------------------+
| Warning: using existing definition for location |
+--------------------------------------------------+
1 row in set (0.00 sec)</div>
<div>Query OK, 0 rows affected (0.01 sec)</div>
<div>mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)</div>
<div>mysql> drop procedure myProc1;
Query OK, 0 rows affected (0.00 sec)</div>
<div>mysql>
mysql></div>

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