标签:bsp color span code select 记录 分组 效率 div
获取分组后取某字段最大一条记录 方法一:(效率最高) select * from test as a where typeindex = (select max(b.typeindex) from test as b where a.type = b.type );
标签:bsp color span code select 记录 分组 效率 div
原文地址:http://www.cnblogs.com/mchuang/p/6143542.html