实例~~
创建表tab1
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DROP TABLE IF EXISTS tab1;CREATE TABLE tab1( tab1_id varchar(11)); |
创建表tab2
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DROP TABLE IF EXISTS tab2;CREATE TABLE tab2( tab2_id varchar(11)); |
创建触发器:t_afterinsert_on_tab1
作用：增加tab1表记录后自动将记录增加到tab2表中
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DROP TRIGGER IF EXISTS t_afterinsert_on_tab1;CREATE TRIGGER t_afterinsert_on_tab1 AFTER INSERT ON tab1FOR EACH ROWBEGIN insert into tab2(tab2_id) values(new.tab1_id);END; |
测试一下
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INSERT INTO tab1(tab1_id) values(‘0001‘); |
看看结果
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SELECT * FROM tab1;SELECT * FROM tab2; |
创建触发器:t_afterdelete_on_tab1
作用：删除tab1表记录后自动将tab2表中对应的记录删去
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DROP TRIGGER IF EXISTS t_afterdelete_on_tab1;CREATE TRIGGER t_afterdelete_on_tab1AFTER DELETE ON tab1FOR EACH ROWBEGIN delete from tab2 where tab2_id=old.tab1_id;END; |
测试一下
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DELETE FROM tab1 WHERE tab1_id=‘0001‘; |
原文：http://www.cnblogs.com/gzyx1988/p/7815137.html