sql 练习

DECLARE   @DriveDate            AS VARCHAR(20)
DECLARE   @int                      AS VARCHAR(20)
DECLARE   @StartDate            AS VARCHAR(10)
DECLARE   @EndDate              AS VARCHAR(10)
DECLARE   @WarehouseCode  AS  VARCHAR(10)
DECLARE   @ID                      AS  VARCHAR(10)

-- ID = 1  -- ID = 2  --   ID = 3  --   ID = 4

SET  @ID = 1
   
SET  @StartDate = '2008/08/01'
SET  @EndDate   = '2008/08/31'
SET  @int = 1

SET  @DriveDate = @StartDate

print  DATEDIFF( hh, @DriveDate  , @EndDate )

print @DriveDate

SET @DriveDate = DATEADD( day ,1,@DriveDate)
print @DriveDate

print convert ( varchar ,  @DriveDate , 111)