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我有一个表:计数和group by问题
论坛:
_____________________________________________________________
|match_static_id| comment | timpstamp | user_id |
|_______________|___________|______________________|__________|
| 1 | Hi | 2013-07-10 12:15:03 | 2 |
| 1 | Hello | 2013-07-09 12:14:44 | 1 |
|_______________|___________|______________________|__________|
工作查询:
select forum.match_static_id,
count(forum.match_static_id) 'comment_no'
Group By forum.match_static_id
但是如果我想有:
select forum.match_static_id,
count(forum.match_static_id) 'comment_no',
forum.timestamp
Group By forum.match_static_id
它会给出与前一个查询bu相同的结果吨与每个记录的时间戳值
我希望这个值是最近可以完成的时间戳吗?
非常感谢你能正常工作。 – Basel