SQL Server 删除表中重复的记录的方法记录

--delete from [T_SaleConfirmStage]  not in 

--select * from [T_SaleConfirmStage]

delete from [T_SaleConfirmStage] where PID not in (select max(PID) from [T_SaleConfirmStage] group by  [CompanyID]
		  ,[ContractID]
		  ,[BFB]      
		  ,[StageDes] 
		  ,[AddAmount]      
		  ,[Playtime]		 
		  ,[WBSID]
		  ,[IsDeleted]
		  ,[Currency]
		  ,[CreatedByUserID]
		   ,stageid,orderID)