2010年8月25日
面试---查找重复列
代码Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1查找重复列:23select*fromysggwherenumberin(selectnumberfromysgggroupbynumberhavingcount(number)>1);456... Read More
posted @ 2010-08-25 12:39 hevily Views(361) Comments(0) Diggs(1)