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 = 87 
WHERE 
  cscart_products_categories.product_id IN (
    125358, 125461, 125089, 125066, 125487, 
    124934, 125127, 124797, 124795, 124990, 
    124970, 124816, 125134, 125133, 125030, 
    124778, 124470, 124653, 124477, 124475, 
    124857, 124312, 124309, 124180, 124483, 
    124302, 124301, 124033, 124449, 124269
  ) 
GROUP BY 
  cscart_products_categories.product_id