public static function isExist(DatabaseMysql $db, $verbose = false, $dryRun = false, $params = array())
 {
     echo "Wiki: {$params['dbname']} (ID:{$params['cityId']})\n";
     if (!$db->tableExists('image')) {
         echo "ERROR: {$params['dbname']} (ID:{$params['cityId']}): image table not exist.\n\n";
         return;
     }
     if ($params['dbname'] == F::app()->wg->WikiaVideoRepoDBName) {
         echo "SKIP: {$params['dbname']} (ID:{$params['cityId']})\n\n";
         return;
     }
     $row = $db->selectRow('image', '1', array('img_media_type' => 'video', 'img_size' => '66162', 'img_sha1' => 'm03a6fnvxhk8oj5kgnt11t6j7phj5nh', "img_timestamp >= '20131029'", "img_timestamp <= '20131110'"), __METHOD__);
     $result = $row ? "FOUND" : "NOT FOUND";
     echo "{$params['dbname']} (ID:{$params['cityId']}): default thumbnail " . $result . " \n";
 }