获取今天的00:00:00 SELECT CONVERT(DATETIME,CONVERT(VARCHAR(10),GETDATE(),120)) 获取今天的23:59:59 1.SELECT DATEADD(SS,-1,DATEADD(DD,1,CONVERT(DATETIME,CONVERT(VARCHAR(10),GETDATE(),120)))) 2.SELECT CONVERT(DATETIME,CONVERT(VARCHAR,GETDATE(),112),112)+1-1.0/360