SELECT 
  cscart_products_categories.product_id, 
  GROUP_CONCAT(
    IF(
      cscart_products_categories.link_type = "M", 
      CONCAT(
        cscart_products_categories.category_id, 
        "M"
      ), 
      cscart_products_categories.category_id
    )
  ) AS category_ids, 
  product_position_source.position AS position 
FROM 
  cscart_products_categories 
  INNER JOIN cscart_categories ON cscart_categories.category_id = cscart_products_categories.category_id 
  AND cscart_categories.storefront_id IN (0, 1) 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  LEFT JOIN cscart_products_categories AS product_position_source ON cscart_products_categories.product_id = product_position_source.product_id 
  AND product_position_source.category_id = 4 
WHERE 
  cscart_products_categories.product_id IN (
    5618, 5676, 5661, 5634, 5619, 6216, 2458, 
    2457, 2456, 2455, 2454, 2451, 2450, 
    6164, 2443, 2448, 2447, 2446, 2445, 
    2444, 85065, 85064, 78818, 78817, 2441, 
    2440, 2439, 5885, 2442, 78201, 5897, 
    2434, 2435, 2437, 2438, 2436, 6059, 
    2433, 2432, 2431, 2430, 6189, 6130, 
    6129, 6126, 6125, 6124, 6123, 6122, 
    5940, 2428, 2427, 2426, 2425, 6183, 
    2422, 2423, 2421, 2420, 2424, 2419, 
    2418, 2416, 2414, 6181, 5985, 77579, 
    6321, 26680, 6174, 6306, 2408, 2412, 
    2413, 2411, 2410, 2409, 2407, 6186, 
    103458
  ) 
GROUP BY 
  cscart_products_categories.product_id