Question

I am using following query:

SELECT `users`.`id` as id 
FROM (`users`) 
    LEFT JOIN `work_orders` 
        ON `users`.`id` = `work_orders`.`assigned_to` 
WHERE (work_orders.status = 'approved' 
        OR work_orders.status = 'scheduled' 
        OR work_orders.status = 'published') 
    AND work_orders.is_paid = 0 
ORDER BY `users`.`id` DESC 
LIMIT 30

But with this query I am getting multiple records for each users if they have more than one work_orders. What should I do to only list users once which have more than one work_orders?

Answer 1

You can add a GROUP BY statement to filter by user’s ids because this is everythin you are interested in.

SELECT `users`.`id` as id 
FROM (`users`) LEFT JOIN `work_orders` ON `users`.`id` = `work_orders`.`assigned_to` 
WHERE (work_orders.status = 'approved' 
  OR work_orders.status = 'scheduled' 
  OR work_orders.status = 'published') 
  AND work_orders.is_paid = 0 
GROUP BY `users`.`id`
ORDER BY `users`.`id` DESC LIMIT 30