Подарки на День химика

select distinct filters.filterid, filters.filtername, filters.filtertypeid
from filters, filters_in_products 
where filters_in_products.product_id in (1949) and 
filters.filtertypeid = filters_in_products.fitertype_id and
filters.filterid = filters_in_products.filter_id 
 order by filters.filtername