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Ò»ÕÅʵ¼ÊÇé¿ö±íProjectProgress
ÓпªÊ¼Ê±¼äBeginDate ½áÊøÊ±¼ä EndDate
ÎÒÏÖÔÚÇó½áÊøÊ±¼äÌõ¼þÊÇ £º°Ñ×î´óµÄ½áÊøÊ±¼ämax(EndDate£©Çó³öÀ´£¬µ«ÐèÒªÅжÏÈç¹ûEndDateΪһÐпոøÕâÐи¶µ±Ç°Ê±¼ä¼ÆËã
select max(EndDate£© from ProjectProgress
лл¸÷λÁË
select isnull(max(EndDate£©,getdate()) from ProjectProgress
select isnull(max(EndDate),getdate()) from ProjectProgress
SQL code:
select max(isnull(EndDate,getdate()) from ProjectProgress
SQL code:
create table ProjectProgress(EndDate datetime)
go
select isnull(max(EndDate),getdate()) from ProjectProgress
drop table ProjectProgress
/*
------------------------------------------------------
2010-04-26 09:21:03.123
£¨ËùÓ°ÏìµÄÐÐÊýΪ 1 ÐУ©
*/
select isnull(max(EndDate£©,getdate()) from ProjectProgress
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create table ProjectProgress
(
StandDate datetime null,
EndDate datetime null
)
insert into ProjectProgress(StandDate)
(
select '2010-02-02'
)
select * from ProjectProgress
go
select isnull(max(EndDate),getdate()) from ProjectProgress
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