我有一个名为viewlist的表,如下所示
Id article_id viewdate
--------------------------------------------------
1 1 2015-07-01
2 1 2015-07-01
3 1 2015-07-01
4 2 2015-07-01
5 2 2015-07-01
6 1 2015-07-02
7 2 2015-07-02
8 1 2015-07-03
9 2 2015-07-03
10 1 2015-07-05
11 1 2015-07-05
----------------------------------------------------
我需要通过对相邻的viewdate字段进行分组来编写一个MySQL查询来获取count和article_id
想要的结果如下
article_id count date_period
-----------------------------------------------------------------
1 4 2015-07-01 - 2015-07-02
2 3 2015-07-01 - 2015-07-02
1 1 2015-07-03 - 2015-07-04
2 1 2015-07-03 - 2015-07-04
1 2 2015-07-05 - 2015-07-06
是否有任何简单的查询来获得此类结果?