一、表结构如下:表名test
二、sql
select temp.* from (select test.*, row_number() over(partition by obd_code order by odd desc) rm from test) temp where temp.rm = 1;
有重复行,查询时只保留最新一行的sql
原文:http://www.cnblogs.com/lanceblog/p/7601678.html