sqlserver 批量更新

select  * from [LPicture]
UPDATE [dbo].[LPicture] SET [picGroup] = ''
 WHERE  LPictureid in(,);

select * from LPicture where LPictureid not in ('')

select * from LPicture where LPictureid not in (null) --什么也查不出来

select * from LPicture where LPictureid not in (select contentlist from DPSeting where DPSetingid=)