code: func (t *Table) String() string {
  	strs := make([]string, 0, len(t.Columns)+1)
  	strs = append(strs, fmt.Sprintf("Table:%d Count:%d", t.PhysicalID, t.Count))
  	for _, col := range t.Columns {
  		strs = append(strs, col.String())
  	}
  	for _, col := range t.Indices {
  		strs = append(strs, col.String())
  	}
  	return strings.Join(strs, "\n")
  }
docs: // String implements Stringer interface.