Question

I’m trying to group messages like conversation and to display only the latest message from a conversation, therefore I need the one with the highest number in the column time.

This is my query:

SELECT * 
FROM console_msgs 
WHERE `to` = $user[id] 
GROUP BY `from` 
ORDER BY time DESC

Thanks for any help!

Answer 1

You want the groupwise maximum:

SELECT console_msgs.*
FROM   console_msgs NATURAL JOIN (
         SELECT   MAX(time) AS time
         FROM     console_msgs
         WHERE    `to` = $user[id]
         GROUP BY `from`
       ) t
WHERE  `to` = $user[id]