以下为删除记录的存储过程，此删除为逻辑删除，只是将记录的状态字段state改为'2'了，正常为'1'
/*******************************************************************************根据ID删除黑名单表中记录信息******************************************************************************/CREATE PROCEDURE [dbo].[P_DelBlackListByID_sp]@IDList nvarchar(2000)AS DECLARE @Len int DECLARE @id varchar(30) SELECT @Len = DATALENGTH(@idList) WHILE @Len> 0 BEGIN EXECUTE @Len = GetFirstWordWithSeparator_sp @idList OUTPUT, @id OUTPUT,',' IF @Len > 0 BEGIN update BlackList_tb set [state]='2' WHERE BlackListID=cast(@id as int) END End
以上存储过程调用了下面的存储过程
CREATE PROCEDURE [dbo].[GetFirstWordWithSeparator_sp]@SourceString nvarchar(4000) = NULL OUTPUT,@FirstWord nvarchar(4000) = NULL OUTPUT,@Separator nvarchar(20)AS SET NOCOUNT ON DECLARE @Oldword nvarchar(4000) DECLARE @Length int DECLARE @CommaLocation int SELECT @Oldword = @SourceString IF NOT @Oldword IS NULL BEGIN SELECT @CommaLocation = CHARINDEX(@Separator,@Oldword) SELECT @Length = DATALENGTH(@Oldword) IF @CommaLocation = 0 BEGIN SELECT @FirstWord = @Oldword SELECT @SourceString = NULL RETURN @Length END SELECT @FirstWord = SUBSTRING(@Oldword, 1, @CommaLocation -1) SELECT @SourceString = SUBSTRING(@Oldword, @CommaLocation + LEN(@Separator), @Length - @CommaLocation) RETURN @Length - @CommaLocation END RETURN 0
这样就可以一次性向数据库传递一个字符串id集合对数据进行操作了，这样做可以不用in关键字。
PS：我的淘宝店铺新开业，经营各种桌游，棋牌，希望大伙儿能来看看！http://201314yes.taobao.com/
来源：https://www.cnblogs.com/jenney-qiu/archive/2012/02/27/2369458.html