通过SQL Server存储过程传送数组参数删除多条记录
昨天看了无心之柳.NET 的一篇给SQL Server存储过程,传送数组参数的变通办法后,我稍微改了一下,以解决在SQL Server存储过程通过传送数组字符串参数删除多条记录(如多选或全选表单中的多选框所获取的一组数值删除 )。
存储代码如下:
存储代码如下:
CREATE PROCEDURE DeleteNews
@ID nvarchar(500)
as
DECLARE @PointerPrev int
DECLARE @PointerCurr int
DECLARE @TId int
Set @PointerPrev=1
while (@PointerPrev < LEN(@ID))
Begin
Set @PointerCurr=CharIndex(',',@ID,@PointerPrev)
if(@PointerCurr>0)
Begin
set @TId=cast(SUBSTRING(@ID,@PointerPrev,@PointerCurr-@PointerPrev) as int)
Delete from News where ID=@TID
SET @PointerPrev = @PointerCurr+1
End
else
Break
End
--删除最后一个,因为最后一个后面没有逗号,所以在循环中跳出,需另外再删除
set @TId=cast(SUBSTRING(@ID,@PointerPrev,LEN(@ID)-@PointerPrev+1) as int)
Delete from News where ID=@TID
GO
@ID nvarchar(500)
as
DECLARE @PointerPrev int
DECLARE @PointerCurr int
DECLARE @TId int
Set @PointerPrev=1
while (@PointerPrev < LEN(@ID))
Begin
Set @PointerCurr=CharIndex(',',@ID,@PointerPrev)
if(@PointerCurr>0)
Begin
set @TId=cast(SUBSTRING(@ID,@PointerPrev,@PointerCurr-@PointerPrev) as int)
Delete from News where ID=@TID
SET @PointerPrev = @PointerCurr+1
End
else
Break
End
--删除最后一个,因为最后一个后面没有逗号,所以在循环中跳出,需另外再删除
set @TId=cast(SUBSTRING(@ID,@PointerPrev,LEN(@ID)-@PointerPrev+1) as int)
Delete from News where ID=@TID
GO