MySQL 按日期分组并从 unix 时间戳转换

问题描述

我有如下sql表(简体)

I have the following sql table (simplified)

ID (int)  title (text)            date (int)
--------------------------------------------
1         Hello World             1378148920
2         Hello World2            1378182183
3         Hello World3            1378129838
4         Hello World4            1378146160
5         Hello World5            1378138038
....

该表有数千个条目.

我不想问你是否可以构建一个 SQL 查询，将所有帖子按日期分组，但仅按天分组.

I wan't to ask you if it is possible to build a SQL query that groups all the posts by date but only as day.

所以最后我不想构建这样的图表(过去 5 天):

So at the end I wan't to build a graph like this (for the last 5 days):

02.09.2013: 13 posts
01.09.2013: 14 posts

注意:时间戳不是真实的(它们都是从今天开始的)

NOTE: the timestamp aren't real (they are all from today)

推荐答案

你可以使用from-unixtime()

select FROM_UNIXTIME(`date`, '%d.%m.%Y') as ndate,
       count(id) as post_count
from your_table
group by ndate

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