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select getdate() as dte,dateadd(day,-1,getdate()) as nowdat
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dte nowdat
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1999-11-21 19:13:10.083 1999-11-20 19:13:10.083
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datepart()º¯Êý£ºÒÔÕûÊýµÄÐÎʽ·µ»Øʱ¼äµÄÖ¸¶¨²¿·Ö¡£
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SELECT DATEPART(month, GETDATE()) AS 'Month Number'
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Month Number
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11
(1 row(s) affected)
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date(ͬÉÏ)
numberÒªÔö¼ÓµÄÖµ£¬ÕûÐÍ£¬¿ÉÕý¿É¸º£¬ÕýÖµ·µ»ØdateÖ®ºóµÄʱ¼äÖµ£¬¸ºÖµ·µ»Ødate
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select getdate() as today
select dateadd(day,-1,getdate())
select dateadd(day,1,getdate())
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today
---------------------------
1999-11-21 19:42:41.410
(1 row(s) affected)
yesterday
---------------------------
1999-11-20 19:42:41.410
(1 row(s) affected)
tomorrow
---------------------------
1999-11-22 19:42:41.410
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datediff()º¯Êý£º·µ»ØÁ½¸öʱ¼äÒÔÖ¸¶¨Ê±¼ä²¿·ÖÀ´¼ÆËãµÄ²îÖµ¡£·µ»ØÕûÊýÖµ¡£Èç1991-6-12ºÍ1991-6-21Ö®¼äÒÔÌì
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date1¡¢date2(ͬÉÏdate)
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select datediff(month,'1991-6-12','1992-6-21') as a
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a
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12
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USE AdventureWorks;
GO
IF OBJECT_ID ( 'Production.usp_GetList', 'P' ) IS NOT NULL
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