五、遊標

declare @ID int
declare @Oid int
declare @Login varchar ( 50)
--定義一個遊標
declare user_cur cursor for select ID, Oid,[Login] from ST_User
--開啟遊標
open user_cur
while @@fetch_status =0
begin
--讀取遊標
 fetch next from user_cur into @ID, @Oid,@Login
print @ID
--print @Login
end
close user_cur
--摧毀遊標
deallocate user_cur
 

--建立觸發器
Create trigger User_OnUpdate 
 On ST_User  
 for Update  
As 
 declare @msg nvarchar( 50)
[email protected]記錄修改情況
select @msg = N ' 姓名從“' + Deleted . Name + N ' ”修改為“ ' + Inserted. Name + '” ' from Inserted, Deleted
 --插入日誌表
insert into [LOG]( MSG) values (@msg )      
--刪除觸發器
drop trigger User_OnUpdate
 

七、儲存過程

--建立帶output 引數的儲存過程
CREATE PROCEDURE PR_Sum
     @a int ,
     @b int ,
     @ sum int output
AS
BEGIN
     set @ sum [email protected]+ @b
END

--建立Return 返回值儲存過程
CREATE PROCEDURE PR_Sum2
     @a int ,
     @b int
AS
BEGIN
     Return @a [email protected]
END

--執行儲存過程獲取output型返回值
declare @mysum int
execute PR_Sum 1, 2,@mysum output
print @mysum
 

--執行儲存過程獲取Return型返回值
declare @mysum2 int
execute @mysum2 = PR_Sum2 1, 2
print @mysum2