find Most Recent Fragments By Variant Name Lazy
@Query(value = "SELECT DISTINCT ON (running_time, variantID) f.* from Fragment f WHERE f.variant_name = :variantName AND running_time = ( SELECT MAX(running_time) FROM Fragment f1 WHERE f1.variant_name = :variantName)
AND f.open = :isOpen
ORDER BY running_time DESC, variantID
LIMIT :limit", nativeQuery = true )