Mysql存储过程
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内容图文
![Mysql存储过程](/upload/InfoBanner/zyjiaocheng/472/baefa9b0a30944da80f70853c58a4aae.jpg)
5、Mysql存储过程
(1)创建存储过程
CREATE PROCEDURE P_NAME() BEGIN ...... END
(2)调用存储过程
CALL P_NAME() // 存储过程名称(P_NAME)后面必须添加括号,即使没有参数
(3)删除存储过程
DROP PROCEDURE P_NAME; //不能在一个存储过程中删除另一个存储古城,只能调用另一个存储过程
(4)查看数据库里全部的存储过程
SHOW PROCEDURE STATUS
(5)查看单个存储过程的详细信息
SHOW CREATE PROCEDURE P_NAME
6、创建存储过程详解
(1)简单的无参存储过程(查询所有的结果集)
DROP PROCEDURE IF EXISTS P_user; CREATE PROCEDURE P_user() BEGIN SELECT * FROM t_user; END;
调用:CALL P_user();
(2)带参存储过程
MySQL存储过程的参数用在存储过程的定义,共有三种参数类型,IN,OUT,INOUT,形式如:
CREATE PROCEDURE([[IN |OUT |INOUT ] 参数名 数据类形...])
a.IN参数
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016830.jpg)
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016859.jpg)
/*创建存储过程*/ DROP PROCEDURE IF EXISTS P_user; CREATE PROCEDURE P_user(IN t_id VARCHAR(10)) BEGIN SELECT * FROM t_user WHERE ID = t_id; END; /*调用存储过程*/ CALL P_user(1);View Code
b.OUT参数
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016830.jpg)
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016859.jpg)
/*创建存储过程*/ DROP PROCEDURE IF EXISTS P_user; CREATE PROCEDURE P_user(IN t_id VARCHAR(10),OUT uCount INT) BEGIN SELECT COUNT(*) FROM t_user WHERE ID = t_id; END; /*调用存储过程*/ CALL P_user(4,@p_num); SLEEP(@p_num)View Code
c.INOUT参数(参数是入参也是出参)
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016830.jpg)
![Mysql存储过程 - 文章图片](/upload/getfiles/0001/2021/4/24/20210424053016859.jpg)
/*创建存储过程*/ DROP PROCEDURE IF EXISTS P_user; CREATE PROCEDURE P_user(INOUT t_id VARCHAR(10)) BEGIN SELECT COUNT(*) FROM t_user WHERE ID = t_id; END; /*调用存储过程*/ SET @p_num = 4; CALL P_user(@p_num); SELECT @p_num;View Code
<img alt="技术分享" 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 本文系统来源:http://www.cnblogs.com/parryyang/p/5973412.html
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