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sql触发器写法

基本语法 create trigger tri_name on table for insert/update/deleted as SQL code 例: create trigger tri_mc(tri_mc:自定义触发器的名称) on table (table:触发的表名) for insert (触发类型:insert,插入数据触发 update,更新数据触发...

基本语法格式 create trigger tri_name on table for insert/update/deleted as SQL code 例: create trigger tri_mc(tri_mc:自定义触发器的名称) on table (table:触发的表名) for insert (触发类型:insert,插入数据触发 update,更新数据...

CREATE TRIGGER trig_stu_update ON student FOR UPDATE AS begin end; CREATE TRIGGER trig_stu_delete ON student FOR DELETE AS begin end; ------------------ 上面是更新、删除的触发器模板,将你的代码填在begin...end之间。 触发器中经常...

-- 查看数据库已有触发器 use yourdatabase go select * from sysobjects where xtype='TR' -- 查看单个触发器 exec sp_helptext '触发器名' --删除触发器: 基本语句如下: drop trigger trigger_name

使用delete 触发器格式: CREATE trigger tri_update on tablename for delete as begin --sql code end 例: CREATE trigger tri_update on tablename1 --触发的表名 for delete as begin declare @del_id varchar(40) select @del_id = id fro...

基本语法格式 create trigger tri_name on table for insert/update/deleted as SQL code 例: create trigger tri_mc(tri_mc:自定义触发器的名称) on table (table:触发的表名) for insert (触发类型:insert,插入数据触发 update,更新数据...

以sqlserver2008为例,可以写代码查看,也可以通过SQL Server Manager Studio工具的树形列表查看。 一、代码查看: 直接在SQL Server Manager Studio查询页面写语句: exec sp_helptext '触发器名' ; 二、树形列表查看: 1、用SQL Server Manage...

--此题唯一的难度是用户名 假设用户名已保存在表CurrentUser中 --给出插入操作的触发器创建 其他类似 CREATE TRRIGER MYTR1 ON A FOR INSERT AS DECLARE @UserName varchar(20) SELECT @UserName=UserName from CurrentUser INSERT INTO C (Tabl...

--设定:--TA(name varchar2(12),num varchar2(10),ydsalary number(12,2))--TB(name varchar2(12),num varchar2(10),ydsalary number(12,2),ynsalary number(12,2))--TC(name varchar2(12),num varchar2(10),ybsalary number(12,2))--TA不可以...

create trigger trig_UpdateVoteInfo on voteInfo after insert as SELECT pId,vId,[content],[key] FROM inserted go 这样用行了 赋值时这样用 go create trigger trig_UpdateVoteInfo on voteInfo after insert AS declare @vId int,@pId int,...

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