SELECT 
  q_product_filters.filter_id, 
  MIN(
    q_product_features_values.value_int
  ) as min, 
  MAX(
    q_product_features_values.value_int
  ) as max 
FROM 
  q_product_features_values 
  LEFT JOIN q_products as products ON products.product_id = q_product_features_values.product_id 
  LEFT JOIN q_product_filters ON q_product_filters.feature_id = q_product_features_values.feature_id 
  LEFT JOIN q_product_features ON q_product_features.feature_id = q_product_features_values.feature_id 
  LEFT JOIN q_product_options_inventory as inventory ON inventory.product_id = products.product_id 
  LEFT JOIN q_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN q_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN q_categories ON q_categories.category_id = products_categories.category_id 
  AND (
    q_categories.usergroup_ids = '' 
    OR FIND_IN_SET(0, q_categories.usergroup_ids) 
    OR FIND_IN_SET(1, q_categories.usergroup_ids)
  ) 
  AND q_categories.status IN ('A', 'H') 
WHERE 
  q_product_filters.filter_id IN (1, 3) 
  AND q_product_features_values.feature_id IN (2) 
  AND q_product_features_values.lang_code = 'en' 
  AND q_categories.category_id IN (
    249, 250, 435, 436, 490, 496, 500, 506, 
    251, 492, 497, 501, 507, 252, 498, 502, 
    508, 253, 499, 503, 509, 254, 489, 504, 
    255, 505, 532, 256, 271, 433, 434, 459, 
    484, 533, 535, 579, 595
  ) 
  AND companies.status = 'A' 
  AND (
    CASE products.tracking WHEN 'O' THEN inventory.amount > 0 WHEN 'B' THEN products.amount > 0 ELSE 1 END
  ) 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND q_product_features.feature_type IN ('N', 'O', 'D') 
GROUP BY 
  q_product_features_values.feature_id