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 = 6 
WHERE 
  cscart_products_categories.product_id IN (
    74072, 74071, 74056, 73996, 73977, 73815, 
    73673, 73599, 73598, 73821, 73994, 
    73976, 73740, 73734, 73880, 73819, 
    73484, 73483, 73820, 73874, 73626, 
    73873, 73872, 73871, 73870, 73869, 
    73868, 73867, 73866, 73865, 73864, 
    73863, 73862, 73861, 73860, 73859, 
    73858, 73857, 73856, 73855
  ) 
GROUP BY 
  cscart_products_categories.product_id