SQL触发器

插入触发器：

if (object_id('tgr_Category_insert', 'tr') is not null)
    drop trigger tgr_Category_insert
go
create trigger tgr_Category_insert
on Category
    for insert --插入触发
as
    --定义变量
    declare @CGID int,@CGType tinyint;
    --在inserted表中查询已经插入记录信息
    select @CGID = CGID,@CGType=CGType from inserted;
    if(@CGType=1)
    begin
        insert into Advertisements (CGFstID,CurrentAdvert,ModifyDate,Operator,ImgUrl,ImgGotoUrl,AdvertCode)
        values (@CGID,0,getdate(),'','','','')
    end   
go

删除触发器：

if (object_id('tgr_Category_delete', 'tr') is not null)
    drop trigger tgr_Category_delete  
go
create trigger tgr_Category_delete 
on Category  
    for delete --删除触发  
as  
    --定义变量  
    declare @CGID int,@CGType tinyint;  
    select @CGID = CGID,@CGType=CGType from deleted;  
     if(@CGType=1)  
     begin  
      delete from Advertisements where CGFstID=@CGID  
     end       
go

查询触发器语句：

use jxcSoftware --数据库名称
go
select * from sysobjects where xtype='TR'