code: @Override
      public String getColumnExpression(String prefix, boolean csvOutput) {
          String columnName = super.getColumnExpression(prefix, csvOutput);
          return csvOutput
              ? String.format("TO_CHAR((%s || ' second')::interval, 'HH24:MI:SS') as %s", columnName, name)
              : columnName;
      }
docs: When outputting to csv, return the PostgreSQL syntax to convert seconds since midnight into the time format
  HH:MM:SS for the specified field.