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15.6.8-sql小技巧

时间:2021-07-01 10:21:17 帮助过:5人阅读

@someDay datetime,@firstDay datetime,@endDay datetime set @someDay=2015.2.2 set @firstDay=dateadd(month,datediff(month,0,@someDay),0) set @endDay=dateadd(month,datediff(month,-1,@someDay),-1) select @someDay,@firstDay,@endDay

 亮点在这里:

declare @someDay datetime, @someDay2 datetime
set @someDay =0
set @someDay2=-1
select @someDay,@someDay2 

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15.6.8-sql小技巧

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