where('IATA_code', 'CM') ->where(function($query) { $query->whereNull('ICAO_code') ->orWhere('ICAO_code', ''); }) ->update(['logo' => null]); } /** * Reverse the migrations. */ public function down(): void { DB::table('airlines') ->where('IATA_code', 'CM') ->where(function($query) { $query->whereNull('ICAO_code') ->orWhere('ICAO_code', ''); }) ->update(['logo' => 'CM.png']); } };