SELECT 
  p.product_id, 
  ifnull(
    count(dp.post_id), 
    0
  ) as discussion_amount_posts 
FROM 
  cscart_discussion 
  INNER JOIN cscart_products as p ON (
    cscart_discussion.object_id = p.product_id
  ) 
  INNER JOIN cscart_discussion_posts as dp ON (
    cscart_discussion.thread_id = dp.thread_id 
    AND cscart_discussion.object_type = 'P' 
    AND cscart_discussion.company_id = 1
  ) 
WHERE 
  dp.status = 'A' 
  and p.product_id in (
    328055, 163893, 178330, 180437, 204532, 
    219115, 225101, 279058, 294256, 317506, 
    317925, 317927, 317954, 317957, 325706, 
    326901, 19570, 31825, 31826, 154780, 
    161165, 177148, 178072, 178114
  ) 
GROUP BY 
  p.product_id