三個after 觸發器

DROP TABLE IF EXISTS tab1;

CREATE TABLE tab1(

tab1_id varchar(11),

tab1_name varchar(11),

tab1_pass varchar(11)

);

DROP TABLE IF EXISTS tab2;

CREATE TABLE tab2(

tab2_id varchar(11),

tab2_name varchar(11),

tab2_pass varchar(11)

);

-- 添加after insert觸發器

DROP TRIGGER IF EXISTS t_afterinsert_on_tab1;

CREATE TRIGGER t_afterinsert_on_tab1

AFTER INSERT ON tab1

FOR EACH ROW

BEGIN

insert into tab2(tab2_id,tab2_name,tab2_pass) values(new.tab1_id,new.tab1_name,new.tab1_pass);

END;

INSERT INTO tab1(tab1_id,tab1_name,tab1_pass) values(‘0001‘,‘name1‘,‘pass1‘);

SELECT * FROM tab1;

SELECT * FROM tab2;

-- 添加after update觸發器

DROP TRIGGER IF EXISTS t_afterupdate_on_tab1;

CREATE TRIGGER t_afterupdate_on_tab1

AFTER update ON tab1

FOR EACH ROW

BEGIN

update tab2 set tab2_id = new.tab1_id, tab2_name = new.tab1_name, tab2_pass = new.tab1_pass;

END;

update tab1 set tab1_id = ‘0002‘, tab1_name = ‘name2‘, tab1_pass = ‘pass2‘;

SELECT * FROM tab1;

SELECT * FROM tab2;

-- 添加after delete觸發器

DROP TRIGGER IF EXISTS t_afterdelete_on_tab1;

CREATE TRIGGER t_afterdelete_on_tab1

AFTER delete ON tab1

FOR EACH ROW

BEGIN

delete from tab2 where tab2_id = old.tab1_id;

END;

delete from tab1 where tab1_id = ‘0002‘;

SELECT * FROM tab1;

SELECT * FROM tab2;

原文：http://www.cnblogs.com/silentmuh/p/5764193.html

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