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 (
    51182, 51180, 51179, 51178, 51177, 93, 
    10, 51289, 51288, 51287, 51286, 51285, 
    51284, 51283, 8, 51294, 51293, 51291, 
    51290, 94, 142, 62, 141, 23, 54, 51313, 
    51312, 51314, 51311, 51310, 86, 51344, 
    120, 51345, 119, 108, 4, 107, 51348, 
    121
  ) 
GROUP BY 
  p.product_id