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SQL Server DATEDIFF() º¯Êý

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DATEDIFF() º¯Êý·µ»ØÁ½¸öÈÕÆÚÖ®¼äµÄÌìÊý¡£
Óï·¨
DATEDIFF(datepart,startdate,enddate)
startdate ºÍ enddate ²ÎÊýÊǺϷ¨µÄÈÕÆÚ±í´ïʽ¡£
datepart ²ÎÊý¿ÉÒÔÊÇÏÂÁеÄÖµ£º
datepart
Ëõд
Äê
yy, yyyy
¼¾¶È
qq, q
ÔÂ
mm, m
ÄêÖеÄÈÕ
dy, y
ÈÕ
dd, d
ÖÜ
wk, ww
ÐÇÆÚ
dw, w
Сʱ
hh
·ÖÖÓ
mi, n
Ãë
ss, s
ºÁÃë
ms
΢Ãî
mcs
ÄÉÃë
ns
select convert(varchar,datediff(s,'2009-12-15',getdate())/3600)+'Сʱ'+
convert(varchar,datediff(s,'2009-12-15',getdate())%3600/60)
+'·ÖÖÓ'
+
convert(varchar,datediff(s,'2009-12-15',getdate())%3600%60)
+'Ãë'


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