docs: @Override
      public String buildAllDataSql()
      {
          String sql="select * from ${tablename} ${order}";
          String tablename= ModelHelper.getTableName(this.getClass());
          sql= StringUtil.replace(sql,"${tablename}",tablename);
          sql= StringUtil.replace(sql,"${order}",StringUtil.isNullOrEmpty(buildDefaultOrders())?"":" order by "+buildDefaultOrders());
          return sql;
      }