Question

我的应用程序中有用户的活动表，我需要显示聚合报告2分钟。范围。

id   datetime              userid  activity
--   -------------------   ------  --------
1    2014-27-12 02:10:57   1       'read'  
2    2014-27-12 02:10:59   1       'ok'  
3    2014-27-12 02:11:02   1       'write'  
4    2014-27-12 02:13:03   1       'write'  
5    2014-27-12 02:15:06   1       'write'  
6    2014-27-12 02:15:08   1       'ok'  
7    2014-27-12 02:17:07   1       'read'  
8    2014-27-12 02:18:01   1       'read'
9    2014-27-12 02:18:02   1       'read'    
10   2014-27-12 02:18:05   1       'read'    
11   2014-27-12 02:18:25   1       'read'    
12   2014-27-12 02:21:09   1       'read'

我想在2个小时范围内得到如下结果。

userid id  datetime (min)       datetime (max)       count
------ --  -------------------  -------------------  ----- 
1      1   2014-27-12 02:10:57  2014-27-12 02:11:02  3                
1      4   2014-27-12 02:13:03  2014-27-12 02:15:08  3
1      7   2014-27-12 02:17:07  2014-27-12 02:18:25  5
1     12   2014-27-12 02:21:09  2014-27-12 02:21:09  1

有谁能解释，怎么做？

Answer 1

SELECT userid, min(id) AS id, 
        MIN(datetime) AS `datetime (min)`, MAX(datetime) AS `datetime (max)`,
        COUNT(*) AS count
FROM activity
GROUP BY userid, FLOOR(UNIX_TIMESTAMP(datetime)/120)

DEMO

mysql - 获得2分钟的聚合结果。范围

1 个答案: