DECLARE @tb1 Table( drive varchar(20), [MB 可用空間] varchar(20)) INSERT INTO @tb1 Exec master.dbo.xp_fixeddrivesselect drive , CAST( CAST((CAST([MB 可用空間] as decimal(9,2))/1024 ) as decimal(9,2)) as varchar)+'G' as 剩余空間 from @tb1