php - Ranking SQL query -


i'm making kind of top-ten ranking in app, , i'm stuck in sql query i'll use that. have 2 tables. 'posts' table stores id of post autor(user_id), , post content(and, of course, entry id).

+----+---------+--------------+ | id | user_id |   content    | +----+---------+--------------+ |  1 |       3 | lorem ipsum1 | |  2 |       6 | lorem ipsum2 | |  3 |       3 | lorem ipsum3 | +----+---------+--------------+

the 'likes' table, stores id of person liked post(user_id), post id(post_id) , date witch timestamp(like_date).

+----+---------+---------+------------+ | id | user_id | post_id | like_date  | +----+---------+---------+------------+ |  1 |       2 |       1 | 1491484851 | |  2 |       5 |       1 | 1491484871 | |  3 |      11 |       2 | 1491484891 | +----+---------+---------+------------+

every time user post, entry created @ 'likes' table, , if user unlike it, remove entry. , here's deal. want grab top 10 liked users of last 30 days. want query result this

+---------+-------+ | user_id | likes | +---------+-------+ |       3 |     2 | |       6 |     1 | +---------+-------+

i've tried tons of queries , spent couple of hours trying solve that, cant figure out how to.

this 1 should trick

select  user_id, count(*)    posts t1 join    likes t2 on      t1.id = t2.post_id   from_unixtime(t2.like_date) >= now() - interval 30 day group user_id order count(*) desc limit 10

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