$snapImages=SnapImages::leftjoin("snap_face_compares",function($join) use ($snap_face_id){
                                        $join->on("snap_images.snap_id","=","snap_face_compares.snap_id")
                                            ->on("snap_images.id","=","snap_face_compares.snap_image_id")
                                            ->on("snap_face_compares.face_id","=",DB::raw($snap_face_id));
                                    })->whereNull('snap_face_compares.id')