ÖØÐ´SQL Server DateDiffº¯Êý
--½«ÏµÍ³datediffº¯ÊýÖØÐ´£¬Ö÷Òª°ÑdatepartÀàÐ͸ÄΪvarhcar£¬·½±ãµ÷ÓÃ
--×÷Õß:°½Ê¿Î°
--Date:2009-10-14 10:29
create function MyDateDiff(@datepart varchar(50), --ÈÕÆÚ¼ä¸ôÀàÐÍ:year,month,day.etc
@date1 varchar(50), @date2 varchar(50))
returns int
as
begin
declare @part int
if @datepart='year'
begin
set @part=datediff(year,@date1,@date2)
end
if @datepart='month'
begin
set @part=datediff(month,@date1,@date2)
end
if @datepart='day'
begin
set @part=datediff(day,@date1,@date2)
end
if @datepart='week'
begin
set @part=datediff(week,@date1,@date2)
end
if @datepart='hour'
begin
set @part=datediff(hour,@date1,@date2)
end
if @datepart='minute'
begin
set @part=datediff(minute,@date1,@date2)
end
if @datepart='second'
begin
set @part=datediff(second,@date1,@date2)
end
return(@part)
end --½áÊøº¯Êý¶¨Òå
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