MySQL: GROUP_CONCAT with LEFT JOIN

Question

I\'m experiencing a problem with MySQL\'s \"GROUP_CONCAT\" function. I will illustrate my problem using a simple help desk database:

CREATE TABLE Tickets (
          


        

Answer 1

Use:

   SELECT t.*,
          x.combinedsolutions
     FROM TICKETS t
LEFT JOIN (SELECT s.ticket_id,
                  GROUP_CONCAT(s.soution) AS combinedsolutions
             FROM SOLUTIONS s 
         GROUP BY s.ticket_id) x ON x.ticket_id = t.ticket_id

Alternate:

   SELECT t.*,
          (SELECT GROUP_CONCAT(s.soution)
             FROM SOLUTIONS s 
            WHERE s.ticket_id = t.ticket_id) AS combinedsolutions
     FROM TICKETS t