SELECT 
  c.category_id, 
  cd.category, 
  city.city, 
  city.link, 
  COUNT(DISTINCT p.product_id) AS product_count 
FROM 
  cscart_products p 
  JOIN cscart_products_categories pc ON pc.product_id = p.product_id 
  JOIN cscart_categories c ON pc.category_id = c.category_id 
  JOIN cscart_category_descriptions cd ON c.category_id = cd.category_id 
  JOIN cscart_product_stocks ps ON ps.product_id = p.product_id 
  JOIN cscart_company_stocks cs ON cs.stock_id = ps.stock_id 
  JOIN cscart_custom_city city ON city.fias_id = cs.fias_id 
WHERE 
  c.id_path LIKE '%559%' 
  AND p.status = 'A' 
GROUP BY 
  city.city 
ORDER BY 
  product_count DESC 
LIMIT 
  16;