select last message of conversation for each conversation in mysql

Question

my query:

SELECT *
  FROM messages_status mst
       INNER JOIN messages msg 
             ON mst.msg_id=msg.id
 WHERE mst.user_id = 1 
       AND mst.status         


        

Answer 1

Here is the Fiddle. http://sqlfiddle.com/#!2/be010/116

This is the query which you can use mostly:

SELECT *
FROM 
(SELECT messages.id as id, 
messages.conv_id as conv_id,
max(messages.created_at) as created_at FROM messages,messages_status
WHERE messages.id = messages_status.msg_id
AND messages_status.user_id = 1 
AND messages_status.status NOT IN (0,3)
GROUP BY messages.conv_id) max_created
INNER JOIN messages 
ON messages.created_at = max_created.created_at
INNER JOIN  messages_status mst 
ON mst.msg_id=max_created.id
GROUP BY messages.conv_id
ORDER BY max_created.created_at DESC;