游标使用-循环语句

--模型

Declare @MemberID int 

Declare csTemp Cursor For

Select MemberID From xxx

 

Open csTemp

 

Fetch Next From csTemp Into @MemberID

While @@fetch_status=0 

Begin

xxx……

Fetch Next From csTemp Into @MemberID

End

 

Close csTemp

Deallocate csTemp

 

--举例

Declare @MemberID int,@BetCoin money,@AwardCoin money,@IsSystem bit --中奖会员，会员所投，当前奖励金豆数量

   

 

Declare csTemp Cursor For

    Select Distinct MemberID,BetCoin,IsSystem From XyDou_Game_Au11_Bet

    Where WinCoin=0 and Qh=@qh and BetNumber= @result and ( IsSystem=0 or IsSystemGameGoldExchange=1 )

   Open csTemp

   Fetch Next From csTemp Into @MemberID,@BetCoin,@IsSystem

   While @@fetch_status = 0 --如果游标存在

      Begin

    --处理语句.....

    Set @AwardCoin = Round(@BetCoin*@Pv,0,1)

   

    Exec P_Member_ChangeGold_Value '游戏',@AwardCoin,@MemberID,1

 

 

    Fetch Next From csTemp Into @MemberID,@BetCoin,@IsSystem --跳到下个游标

   End

     

   Close csTemp --关闭游标

   Deallocate csTemp --释放游标