Method fetch

sql/sql_window.cc:976–985

  }

  virtual int fetch()
  {
    if (at_eof())
      return -1;

    uchar* curr_rowid;
    if (get_curr_rowid(&curr_rowid))
      return -1;
    return table->file->ha_rnd_pos(record, curr_rowid);
  }

private:
  /* The table that is accessed by this cursor. */