sql 根据多个ID删除表中多行数据

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/