1.Ò»¸öÔµÚÒ»ÌìµÄ
Select DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
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Select DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
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Select DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
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Select DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
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Select DATEADD(dd, DATEDIFF(dd,0,getdate()), 0)
6.ÉϸöÔµÄ×îºóÒ»Ìì
Select dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0))
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Select dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()), 0))
8.±¾ÔµÄ×îºóÒ»Ìì
Select dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0))
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Select dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0))
10.±¾ÔµĵÚÒ»¸öÐÇÆÚÒ»
select DATEADD(wk, DATEDIFF(wk,0,dateadd(dd,6-datepart(day,getdate()),getdate())), 0)
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select dateadd(day,2,'2004-10-15') --·µ»Ø£º2004-10-17 00:00:00.000
µ±È»Ò²¿ÉÒÔ¼ÓÔÂ·Ý select dateadd(month,2,'2004-10-15')
12¡¢datediff ·µ»ØÁ½¸öÈÕÆÚÖ®¼äÈÕÆÚ
select datediff(day,'2004-09-01','2004-09-18') --·µ»Ø£º17¡£ºÍdateadd Ò»Ñù£¬dayÒ²¿ÉÒÔ»»³É±ðµÄ
13¡¢datepart ·µ»Ø´ú±íÖ¸¶¨ÈÕÆÚµÄÖ¸¶¨ÈÕÆÚ²¿·ÖµÄÕûÊý
SELECT DATEPART(month, '2004-10-15') --·µ»Ø 10
14¡¢datename ·µ»Ø´ú±íÖ¸¶¨ÈÕÆÚµÄÖ¸¶¨ÈÕÆÚ²¿·ÖµÄ×Ö·û´®
SELECT datename(weekday, '2004-10-15') --·µ»Ø£ºÐÇÆÚÎå
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