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如何测试mysql触发器和存储过程_MySQL

时间:2021-07-01 10:21:17 帮助过:9人阅读

bitsCN.com 1. 为了测试触发器和存储过程,首先建立一张简单的表:

CREATE TABLE `airuser` (
`userId` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(128) NOT NULL,
PRIMARY KEY (`userId`)
)ENGINE=InnoDB DEFAULT CHARSET=utf8

2. 为该表的插入操作,创建一张记录表:

CREATE TABLE `airuser_record` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(45) DEFAULT NULL,
`edittime` timestamp NULL DEFAULT NULL,
`edittype` varchar(45) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

3. 编写一个插入操作的触发器:

DROP TRIGGER insert_trigger;
delimiter |
CREATE TRIGGER insert_trigger BEFORE INSERT ON airuser
FOR EACH ROW BEGIN
INSERT INTO airuser_record SET username = NEW.username, edittime=now(), edittype='insert';
END;

SHOW TRIGGERS;

4. 为批量插入编写存储过程:

DROP procedure createUsers;
delimiter |
create procedure createUsers(IN count int)
begin
declare i int;
set i=0;
while iinsert into airuser set username=concat('user_',i);
set i=i+1;
end while;
end;

show procedure status;

5. 调用存储过程,验证存储过程是工作的,并验证在插入记录前,触发器能正确被触发:

call createUsers(10);

6. 最后通过插入记录表再次验证:

SELECT * FROM mars_jpa.airuser_record;
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