PHP code snippet – How to use union and intersection in laravel query?
$queryWithParent = SaleService::query() ->select(\DB::raw('DISTINCT ON (properties.parent_id) sale_services.*')) ->from('sale_services') ->join('properties', 'sale_services.property_id', '=', 'properties.id') ->whereNotNull('properties.parent_id') ->orderBy('properties.parent_id') ->orderBy('sale_services.index_range', 'desc'); $queryWithoutParent = SaleService::query() ->select(\DB::raw('sale_services.*')) ->join('properties', 'sale_services.property_id', '=', 'properties.id') ->whereNull('properties.parent_id'); $query = $queryWithParent->union($queryWithoutParent);