在表上插入后插入和更新的mysql触发器 [英] mysql trigger with insert and update after insert on table

问题描述

create table Test1
(
WRO varchar(10),
Test_No varchar(10),
TestDate datetime
);

insert into Test1(WRO,TestDate) values('T0001',now());

create table Test2
(
WRO varchar(10),
Test_No varchar(10),
Test2Date datetime,
TestAmount varchar(10)
);

我必须在 Test2 表 Test_No 上插入后更新和插入 Test1 Test_No 都有共同的字段 WRO.

I have to update and Insert on Test1 Test_No after insert on Test2 table Test_No both have common field WRO.

insert into Test2 values('DSK','400',now(),3000);
insert into Test2 values('T0001','200',now(),3000);

如果 test2 表的 wro no 与 test1 不匹配，则应在 test1 表中触发插入查询

if wro no of test2 table not match with test1 then insert query should be fired in test1 table

推荐答案

希望我能正确理解你.

如果WRO 表中不存在新行的WRO 字段，Test2 表上的以下触发器将向Test1 表中插入新行>Test1.

The following trigger on Test2 table will insert new row into Test1 table if WRO field of new row doesn't exist in Test1.

 CREATE TRIGGER `myTrigger` AFTER INSERT ON `Test2`
 FOR EACH ROW BEGIN
    if not exists (select 1 from Test1 where WRO = new.WRO) then
         insert into Test1 (WRO, Test_No) values (new.WRO, new.Test_No);
    end if;   
 END

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