Question

I have a table with two columns, an id, and a unix timestamp (i.e. not Mysql style, but just a pure seconds from 1970 type.)

I want to know how many timestamps there are in each day.

The query I have so far is:

SELECT unixtime, count(unixtime)
    AS count
    FROM core
    GROUP BY unixtime

What I need to do of course is to round the unixtime stamp up to the nearest day. How do I do this?

Answer 1

Using FROM_UNIXTIME with DATE should get you the desired result:

SELECT DATE(FROM_UNIXTIME(unixtime)), COUNT(unixtime) AS count
FROM core
GROUP BY DATE(FROM_UNIXTIME(unixtime))