摘要:
想写一个SQL, 先分组(2个字段组合)再排序取出前N条记录, 用tnd的top n ... group by ... order by ...死活完不成这个任务, 郁闷了半天! 最终有2个方法来解决:1. 一精通SQL Server的朋友帮忙弄了一个function,利用游标装载2个字段中的1个字段能够出现的所有值(distinct),然后来top、group,所有select出的数据union... 阅读全文
摘要:
I saw a lot of people asking what's the differences between Application Pool and AppDomain in ASP.NET.First of all, Application Pool is a concept in IIS, but AppDomain is a concept in .NET. You can wr... 阅读全文