public static function positionIdToName($whereStr)
 {
     self::initDB();
     $sql = "select pName from " . self::$table8 . " {$whereStr}";
     $query = self::$dbConn->query($sql);
     if ($query) {
         $ret = self::$dbConn->fetch_array_all($query);
         return $ret[0]['pName'];
     } else {
         self::$errCode = "4444";
         self::$errMsg = "mysql:" . $sql . " null";
         return false;
     }
 }
 function act_positionIdToName($whereStr)
 {
     $ret = InternalIoSellManagementModel::positionIdToName($whereStr);
     if (!empty($ret)) {
         return $ret;
     } else {
         self::$errCode = "4444";
         self::$errMsg = "mysql:error";
         return false;
     }
 }