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测试表1
DROP TABLE IF EXISTS test; CREATE TABLE test ( id bigint(11) unsigned NOT NULL AUTO_INCREMENT, name varchar(100) NOT NULL DEFAULT '', type varchar(100), create_time datetime, PRIMARY KEY (ID) ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
测试表2
DROP TABLE IF EXISTS test_hisy; CREATE TABLE test_hisy ( id bigint(11) unsigned NOT NULL AUTO_INCREMENT, name varchar(100) NOT NULL DEFAULT '', type varchar(100), create_time datetime, operation varchar(100) COMMENT '操作类型', PRIMARY KEY (ID) ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
insert触发器
表test新增记录后,将type值为“1”的记录同时插入到test_hisy表中(AFTER INSERT:录入后触发, BEFORE INSERT:录入前触发)
DELIMITER //DROP TRIGGER IF EXISTS t_after_insert_test//CREATE TRIGGER t_after_insert_testAFTER INSERT ON testFOR EACH ROWBEGIN IF new.type='1' THEN insert into test_hisy(name, type, create_time, operation) values(new.name, new.type, new.create_time, 'insert'); END IF;END;//
update触发器
表test修改时,若type值为“2”则将修改前的记录同时插入到test_hisy表中(AFTER UPDATE:修改后触发, BEFORE UPDATE:修改前触发)
DELIMITER //DROP TRIGGER IF EXISTS t_before_update_test//CREATE TRIGGER t_before_update_testBEFORE UPDATE ON testFOR EACH ROWBEGIN IF new.type='2' THEN insert into test_hisy(name, type, create_time, operation) values(old.name, old.type, old.create_time, 'update'); END IF;END;//
delete触发器
表test删除记录前,将删除的记录录入到表test_hisy中(AFTER DELETE:删除后触发, BEFORE DELETE:删除前触发)
DELIMITER //DROP TRIGGER IF EXISTS t_before_delete_test//CREATE TRIGGER t_before_delete_testBEFORE DELETE ON testFOR EACH ROWBEGIN insert into test_hisy(name, type, create_time, operation) values(old.name, old.type, old.create_time, 'delete');END;//注:以上触发器例子中出现的new为修改后的数据, old为修改前的数据