code: func PgColumnIsUpdatable(db XODB, v0 pgtypes.Regclass, v1 int16, v2 bool) (bool, error) {
  	var err error
  
  	// sql query
  	const sqlstr = `SELECT pg_catalog.pg_column_is_updatable($1, $2, $3)`
  
  	// run query
  	var ret bool
  	XOLog(sqlstr, v0, v1, v2)
  	err = db.QueryRow(sqlstr, v0, v1, v2).Scan(&ret)
  	if err != nil {
  		return false, err
  	}
  
  	return ret, nil
  }
docs: // PgColumnIsUpdatable calls the stored procedure 'pg_catalog.pg_column_is_updatable(regclass, smallint, boolean) boolean' on db.