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 (
    128, 51118, 51117, 51116, 51115, 51114, 
    51113, 51165, 51164, 51163, 51162, 
    51161, 52, 51183, 20, 51188, 51187, 
    51186, 51185, 51184, 51194, 51193, 
    51192, 51191, 51190, 51189, 19, 51201, 
    51200, 51199, 51198, 51197, 51196, 
    51195, 131, 111, 51212, 144, 51215, 
    51214, 51213, 51444, 51445, 51446, 
    51447, 51220, 51219, 51218, 51217, 
    51216, 146, 51448, 51449, 51231, 51230, 
    51229, 51228, 51227, 51226, 51225, 
    109, 51243, 51242, 51241, 51240, 51239, 
    36, 51253, 51252, 51251, 51250, 51249, 
    34, 51273, 147, 51277, 51276, 51275, 
    51274, 9, 59, 60, 13, 51346, 118, 114, 
    84, 51347, 85, 61, 51350, 123, 15, 95, 
    51352, 51351, 96, 89, 51390, 51391, 
    51392, 51393, 51394
  ) 
GROUP BY 
  p.product_id