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 (
    315954, 323397, 325134, 14991, 85379, 
    276603, 279485, 301669, 302229, 304271, 
    311272, 311276, 311278, 315849, 315875, 
    315879, 315890, 315907, 315918, 315940, 
    316080, 316422, 323401, 325341, 254793, 
    292592, 299513, 299552, 301767, 312729, 
    315858, 315917, 315937, 315944, 315949, 
    316051, 316079, 316206, 64640, 293151, 
    296861, 305641, 307613, 311268, 311277, 
    314526, 315213, 315900, 315936, 316049, 
    323291, 324558, 324559, 325117, 325288, 
    133629, 265179, 273025, 298721, 306823, 
    307582, 311271, 315901, 315919, 315950, 
    316050, 323287, 323292, 323649, 200976, 
    300745, 311269, 312681, 312769, 315946, 
    323483, 325116, 301456, 307583, 311270
  ) 
GROUP BY 
  p.product_id