Question

I have table posts and posts_votes. In posts_votes I have id and post_id and vote. Now I want select from posts where have top votes count in last 1 day using this to set the time

from_unixtime(post_date) >= SUBDATE(NOW(),1)

Answer 1

maybe something like this:

SELECT
    posts.*,
    pv.votes
FROM
    posts JOIN
    (
        SELECT post_id, COUNT(*) AS votes FROM posts_votes GROUP BY post_id
    ) AS pv ON posts.id=pv.post_id
WHERE
    posts.post_date >= UNIX_TIMESTAMP()-86400
ORDER BY
    pv.votes DESC;