mysql取分組後最新的一條記錄,下面兩種方法.一種是先篩選 出最大和最新的時間,在連表查詢.一種是先排序,然後在次分組查詢(預設第一條),就是最新的一條資料了

#select * from t_assistant_article as a, (select max(base_id) as base_id, max(create_time) as create_time from t_assistant_article as b group by base_id ) as b where a.base_id=b.base_id and a.create_time = b.create_time
#select base_id,max(create_time), max(article_id) as article_id from t_assistant_article as b group by base_id 
select * from (select * from t_assistant_article order by create_time desc) as a group by base_id