摘要: CodeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->select * from tb--一、按name分?取val最大的?所在行的数据。--方法1:select a.* from tb a where val = (select max(val) ... 阅读全文
posted @ 2009-02-17 17:25 永恒de影シ 阅读(198) 评论(0) 推荐(0)