1 --查询时间范围内的数据 select * from dbo.point where wtime >'2014-05-01 23:59:59' and wtime< '2014-05-02 00:40:42.000' delete from point where wtime >'2014-05-01 23:59:59' and wtime< '2014-05-02 00:40:42.000' --查询时间范围内的数据,并插入到临时表中 select * into a_temp…
Oracle 语句中“||”代表什么啊? oracle数据库表中,插入数据的时候如何产生一个 字母+数字 编号? 排序的话,用order by来处理即可.比如:cola123a234b999b335select * from tablename order by col; 结果就是 cola123a234b335b999 如果按倒序排列:select * from tablename order by col desc; 结果就是 colb999b335a234a123 其他回答 先…