1、 dw,weekday -----------表示某個星期的第幾天 ltrim(rtrim(title))----------清除title的左右空格 --查詢同一天的 select * from loginlog where datediff(day,logintime,'2007-12-28')=0 --查詢同一星期的 第一種：select * from loginlog where datepart(week,logintime)=datepart(week,'2007-12-11'); 第二種：select * from loginlog where datediff(week,logintime,'2008-01-16')=0 --查詢同一月的 select * from loginlog where datediff(month,logintime,'2007-12-28')=0 --查詢乙個時間段的 select * from loginlog where datepart(dy,logintime)>datepart(dy,'2007-01-01') and datepart(dy,logintime)
datepart(dy,'2008-01-10') and datepart(dy,logintime)
=12 then substring(notetitle,0,12)+'...' else notetitle end from mynote where createuser='admin' 相關的查詢示例： select * from stumarks --原始成績 pring 'abcde五級顯示成績如下：' select stuno,成績=case when writtenexam<60 thten 'e' when writtenexam between 60 and 69 then 'd' when writtenexam between 70 and 79 then 'c' when writtenexam between 80 and 89 then 'b' else 'a' from stumarks --操作臨時表 select len(sunday1), * from ( select sunday1 from schedule ) temp
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