Mysql查询：获取每周日期信息的数据？

Question

这是我的数据库表数据，{我只保留了一个表}

我只会获取当前一周的信息。

从每个start_date

获取最多3个数据

给我任何开发查询的想法，

Answer 1

试试这个：

SELECT eventid, fkUserid, event_tags, event_title, event_description, start_date, end_date 
FROM (SELECT eventid, fkUserid, event_tags, event_title, event_description, start_date, end_date, 
            IF(start_date = @last, @auto:=@auto+1, @auto:=0) cnt, IF(start_date != @last, @last:=start_date, TRUE) test
        FROM (SELECT eventid, fkUserid, event_tags, event_title, event_description, DATE(start_date) start_date, end_date 
            FROM event WHERE DATE(start_date) BETWEEN '2012-12-14' AND '2012-12-20' ORDER BY start_date) AS A, 
          (SELECT @auto:=0, @last:='0001-01-01') AS B
        ) AS A
WHERE cnt < 3;