SqlServer游标简介

游标实例:

            Declare MyCusror Cursor Scroll

                  For Select * From Master_Goods Order By GoodsID

            Open MyCursor

            Fetch next From MyCursor             Into @GoodsCode,@GoodsName

            While(@@Fetch_Status = 0)                   

    Begin

      Begin                                

          Select @GoodsCode = Convert(Char(20),@GoodsCode)                                

        Select @GoodsName = Convert(Char(20),@GoodsName)                                

        PRINT @GoodsCode + ':' + @GoodsName                          

      End

                 Fetch next From MyCursor                          

        Into @GoodsCode,@GoodsName

           End             

    Close MyCursor             

    Deallocate MyCursor

 

      修改当前游标的数据方法如下:

            UpDate Master_Goods Set GoodsName = 'yangyang8848' Where Current Of MyCursor;      

      删除当前游标行数据的方法如下:              

    Delete From Master_Goods Where Current Of MyCursor

 

      Select @@CURSOR_ROWS 可以得到当前游标中存在的数据行数。

注意:此变量为一个连接上的全局变量,因此只对应最后一次打开的游标。

posted @ 2015-07-02 09:28  点滴成事  阅读(300)  评论(0编辑  收藏  举报