sql server 存储过程、事务，增删改

CREATE procedure [dbo].[sp_TableSave]
@TypeID tinyint,    --     0 新增，1 修改，2 删除
@ID int,
@Name nvarchar(32),
@ProductIDs varchar(1024),
@BackColor nvarchar(128),
@UID int,
@Creator nvarchar(32),
@Error nvarchar(100)='' output
as
set nocount on
begin try
begin transaction    --    开始事务
 declare @currDate SMALLDATETIME
 SET @currDate=GETDATE()
 if(@TypeID='')  --修改
 begin
   update ProductActivity set Name=@Name,ProductIDs=@ProductIDs,Backcolor=@BackColor,IsPush=1 where ActivityID=@ID        

   -- 更新移除产品log
   insert into OperateLog(UID,UserName,Title,Content,CreateTime)
   select @UID,@Creator,'更新',CAST(ProductID as varchar(10))+' /Activity:0',@currDate
   from Product AS p
   WHERE ActivityID=@ID and NOT EXISTS(
  select 1 from dbo.F_split(@ProductIDs,',') AS t where t.f=p.ProductID
   )      

   -- 更新移除产品
   update p set ActivityID=0,IsPush=(case when p.status=0 then 1 else 0 end)
   from Product AS p
   WHERE ActivityID=@ID and NOT EXISTS(
  select 1 from dbo.F_split(@ProductIDs,',') AS t where t.f=p.ProductID
   )       

   -- 更新新增产品log
   insert into OperateLog(UID,UserName,Title,Content,CreateTime)
   select @UID,@Creator,'更新',CAST(ProductID as varchar(10))+' /Activity:'+CAST(@ID as varchar(10)),@currDate
   from Product AS p
   WHERE ActivityID<>@ID and EXISTS(
  select 1 from dbo.F_split(@ProductIDs,',') AS t where t.f=p.ProductID
   )      

   -- 更新新增产品
   update p set ActivityID=@ID,IsPush=(case when p.status=0 then 1 else 0 end)
   from Product AS p
   WHERE ActivityID<>@ID and EXISTS(
  select 1 from dbo.F_split(@ProductIDs,',') AS t where t.f=p.ProductID
   )
 end
 else if(@TypeID='') --删除
 begin
   -- 删除 ProductActivity
   update ProductActivity set Status=1,IsPush=1 where ActivityID=@ID        

   -- 写入product改动log
   insert into OperateLog(UID,UserName,Title,Content,CreateTime)
   select @UID,@Creator,'更新',cast(ProductID as varchar(10))+'/Activity:0',@currDate from Product where ActivityID=@ID        

   -- 更新product
   update Product set ActivityID=0,IsPush=(case when Product.status=0 then 1 else 0 end) where ActivityID=@ID
 end
 else      --新增
 begin
   -- 更新ProductActivity表
   declare @NewID int
   insert into ProductActivity(Name,ProductIDs,Backcolor,Creator,CreateTime,IsPush)
   values(@Name,@ProductIDs,@BackColor,@Creator,@currDate,1)
   set @NewID = SCOPE_IDENTITY()        

   -- 更新product表
   update p set ActivityID=@NewID, IsPush=(case when p.Status=0 then 1 else 0 end)
   FROM Product AS p
   INNER JOIN dbo.F_split(@ProductIDs,',') AS t ON t.f=p.ProductID      

   -- 写product改动log
   insert into OperateLog(UID,UserName,Title,Content,CreateTime)
   select @UID,@Creator,'更新', CAST(ProductID as varchar(10))+'/Activity:'+CAST(@NewID as varchar(10)),@currDate
   from Product where ActivityID=@NewID
 end
 set @Error=''
commit transaction  --    提交事务
return;
end try
begin catch     --    异常
  set @Error='1-'+ERROR_MESSAGE()
  rollback transaction  --    回滚事务
  return;
end catch