<select id="orderProductStatistics" resultMap="ProductStatisticsVOMap"> SELECT ls.*,IFNULL(sr. ...
select DATE FORMAT f.upload time, Y u weeks,count ,sum p.download times ,sum p.collection times ,sum p.click times from file base f left join file property p on f.property id p.id group by weeks sele ...
2016-09-26 15:46 0 5274 推荐指数:
<select id="orderProductStatistics" resultMap="ProductStatisticsVOMap"> SELECT ls.*,IFNULL(sr. ...
select t.* from (select * from myt_market_class_draw_img where uid = #{uid} and clz ...
例1: 例2: 例3: ...
mysql 某字段是日期时间型的, 直接分组的话不是按日期来的,可以用 就可以了可以 count sum等聚合函数自己统计。 ...
要求:获得 按table1_id分组,并且age最大的记录信息,即2、3、5条 方法一: select * from (select * from table2 order by age desc) as a group ...
按照分钟进行统计:DATE_FORMAT(create_time, '%Y-%m-%d ...
create_time时间格式 根据时间戳格式 原文地址 http://my.oschina.net/linland/blog/367668?fromerr=OjIhGGNo ...