Question

I’m having a problem trying to count the number of user records according to the user’s id, however I’m using a subquery to join 2 tables that one has a count parameter but I get an error saying duplicate column name 'user_id.

The query:

$sql = "SELECT loc.location_id,
               COUNT(loc.location_id) AS total_records
        FROM locations loc
        LEFT JOIN 
        (
            SELECT usr.*,
                  loc.*
            FROM 
            (
                members usr

                INNER JOIN locations loc
            ) 
            WHERE usr.user_id = " . $user_id . "
            AND usr.account_disabled = 0
            ORDER BY loc.submit_date DESC
        ) usr ON (loc.user_id = usr.user_id)";

All I need it is to return the user’s info and the total_records count done by the COUNT function.

Cheers.

EDIT:

This is what I get returned for this SQL:

 SELECT loc.location_id,
       loc.street_name,
       loc.city,
       loc.state,
       loc.county,
       loc.country,
       usr.user_id,
       usr.username,
       COUNT(loc.location_id) AS total_records
 FROM  locations loc
 INNER JOIN members usr ON (loc.user_id = usr.user_id)              
 WHERE loc.user_id = $user_id
 AND   usr.account_disabled = 0
 GROUP BY loc.location_id

Answer 1

It’s not exactly clear why you’ve got the derived resultset or the LEFT JOIN. Try this:

 SELECT    loc.location_id,
           COUNT(loc.location_id) AS total_records
 FROM        LOCATIONS_TABLE   loc
 INNER JOIN  MEMBERS_TABLE   usr
      ON (loc.user_id = usr.user_id)              
 WHERE loc.user_id =   $user_id  
 AND   usr.account_disabled = 0
 GROUP BY loc.location_id