SELECT * FROM (SELECT t.*, RANK() OVER (PARTITION BY t.a ORDER BY t.b DESC) AS drank FROM table1 t) a WHERE drank=1
SELECT * FROM (SELECT t.*, RANK() OVER (PARTITION BY t.a ORDER BY t.b DESC) AS drank FROM table1 t) a WHERE drank=1
一. 二. 三. ! 作 者 : Yaopengfei(姚鵬飛) 博客地址 : http://www.cnblogs.com