MySQL存儲過程帶in和out參數
最簡單的例子:
[html]
mysql> DELIMITER $$
mysql> USE test $$
Database changed
mysql> DROP PROCEDURE IF EXISTS `sp_add`$$
Query OK, 0 rows affected (0.00 sec)
mysql> CREATE PROCEDURE sp_add(a INT, b INT,OUT c INT)
-> BEGIN
-> SET c=a+ b;
-> END$$
Query OK, 0 rows affected (0.00 sec)
mysql> DELIMITER ;
[html]
mysql> CALL sp_add (1,2,@c);
Query OK, 0 rows affected (0.00 sec)</p><p>mysql> SELECT @c;
+------+
| @c |
+------+
| 3 |
+------+
1 row in set (0.00 sec)
一個稍微復雜的例子:
[html]
mysql> show create table t_BillNo;
+----------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+----------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| t_BillNo | CREATE TABLE `t_billno` (
`SaleNo` bigint(20) DEFAULT NULL,
`bmh` varchar(20) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 CHECKSUM=1 DELAY_KEY_WRITE=1 ROW_FORMAT=DYNAMIC |
www.sd-ju.com
+----------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql> select * from t_BillNo;
+--------+------+
| SaleNo | bmh |
+--------+------+
| 1 | 2 |
| 4 | 3 |
| 4 | 5 |
| 7 | 7 |
| 12 | 8 |
+--------+------+
5 rows in set (0.00 sec)
mysql>
mysql> DELIMITER $$
mysql> USE test $$
Database changed
mysql> DROP PROCEDURE IF EXISTS `sp_GetMaxNumber`$$
Query OK, 0 rows affected (0.01 sec)
DELIMITER $$
USE test $$
DROP PROCEDURE IF EXISTS `sp_GetMaxNumber`$$
CREATE PROCEDURE sp_GetMaxNumber (IN v_bmh VARCHAR(6), OUT v_MaxNo INT)
BEGIN
START TRANSACTION;
UPDATE t_BillNo
SET SaleNo = IFNULL(SaleNo,0)+1
WHERE bmh = v_bmh;
IF @@error_count = 0 THEN
BEGIN
SELECT Saleno INTO v_MaxNo FROM t_BillNo WHERE bmh = v_bmh;
COMMIT;
END;
ELSE
BEGIN
ROLLBACK;
SET v_MaxNo = 0;
END;
END IF;
END$$
DELIMITER ;
mysql> CREATE PROCEDURE sp_GetMaxNumber (IN v_bmh VARCHAR(6), OUT v_MaxNo INT)
-> BEGIN
-> START TRANSACTION;
-> UPDATE t_BillNo
-> SET SaleNo = IFNULL(SaleNo,0)+1
-> WHERE bmh = v_bmh;
-> IF @@error_count = 0 THEN
-> BEGIN
-> SELECT Saleno INTO v_MaxNo FROM t_BillNo WHERE bmh = v_bmh;
www.js-yg.com
-> COMMIT;
-> END;
-> ELSE
-> BEGIN
-> ROLLBACK;
-> SET v_MaxNo = 0;
-> END;
-> END IF;
-> END$$
Query OK, 0 rows affected (0.00 sec)
mysql> DELIMITER ;
mysql>
mysql> call sp_GetMaxNumber(8,@v_MaxNo);
Query OK, 0 rows affected (0.00 sec)
mysql> select @v_MaxNo;
+----------+
| @v_MaxNo |
+----------+
| 12 |
+----------+
1 row in set (0.00 sec)
?
更多文章、技術交流、商務合作、聯系博主
微信掃碼或搜索：z360901061
微信掃一掃加我為好友
QQ號聯系： 360901061
您的支持是博主寫作最大的動力，如果您喜歡我的文章，感覺我的文章對您有幫助，請用微信掃描下面二維碼支持博主2元、5元、10元、20元等您想捐的金額吧，狠狠點擊下面給點支持吧，站長非常感激您！手機微信長按不能支付解決辦法：請將微信支付二維碼保存到相冊，切換到微信，然后點擊微信右上角掃一掃功能，選擇支付二維碼完成支付。
【本文對您有幫助就好】元
