docs: private VoltTable runQuery(String description, String SQL) throws Exception {
          System.out.println(description);
          ClientResponse resp = client.callProcedure("@AdHoc", SQL);
          System.out.println("SQL query: " + SQL);
          System.out.println();
          VoltTable table = resp.getResults()[0];
          System.out.println(table.toFormattedString());
          System.out.println();
          return table;
      }