code: func (f *Field) RowsLimitColumn(limit int64, columnIDOrKey interface{}) *PQLRowsQuery {
  	if limit < 0 {
  		return NewPQLRowsQuery("", f.index, errors.New("rows limit must be non-negative"))
  	}
  	columnIDKey, err := formatIDKey(columnIDOrKey)
  	if err != nil {
  		return NewPQLRowsQuery("", f.index, err)
  	}
  	text := fmt.Sprintf("Rows(field='%s',limit=%d,column=%s)", f.name, limit, columnIDKey)
  	return NewPQLRowsQuery(text, f.index, nil)
  }
docs: // RowsLimitColumn creates a Row query with the given limit and column ID/key