<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 推薦指數:
<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 某字段是日期時間型的, 直接分組的話不是按日期來的,可以用 就可以了可以 count sum等聚合函數自己統計。 ...
要求:獲得 按table1_id分組,並且age最大的記錄信息,即2、3、5條 方法一: select * from (select * from table2 order by age desc) as a group ...
按照分鍾進行統計:DATE_FORMAT(create_time, '%Y-%m-%d ...
create_time時間格式 根據時間戳格式 原文地址 http://my.oschina.net/linland/blog/367668?fromerr=OjIhGGNo ...