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MySQL触发器 Update触发Insert失败

2018-06-17 22:48:36来源：未知阅读 ()

今天工作需要，想要实现将仅对状态更新的表进行历史记录显示，于是考虑在原表中建立触发器，将更新的内容同时写入另一张表

于是进行测试

--建立测试表
CREATE TABLE `triggletest_triggle` (
    `id` INT(11) NOT NULL,
    `name` VARCHAR(5) NULL DEFAULT NULL,
    PRIMARY KEY (`id`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB

--建立目标表
CREATE TABLE `triggletest` (
    `seq` INT(11) NOT NULL,
    `id` INT(11) NOT NULL,
    `name` VARCHAR(5) NULL DEFAULT NULL,
    PRIMARY KEY (`seq`),
    INDEX `id` (`id`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB;

---写入测试数据
INSERT INTO `triggletest_triggle` VALUES(1,'A');

--建立触发器
DROP TRIGGER if EXISTS test1
CREATE TRIGGER test1 
AFTER UPDATE ON triggletest_triggle
FOR EACH ROW
BEGIN
    INSERT INTO triggletest(id) values (new.id);
END

执行触发器语句，报错，报错内容如下：

/* SQL错误（1064）：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CREATE TRIGGER test1
AFTER UPDATE ON triggletest_triggle
FOR EACH ROW
BEGIN ' at line 2 */

---最终实现代码
DROP TRIGGER if EXISTS test1;
CREATE TRIGGER test1 AFTER UPDATE ON test.triggletest_triggle FOR EACH ROW
BEGIN
 INSERT INTO triggletest(id,name) values (new.id,new.name);
END;