code: func Money(db XODB, v0 int64, v1 int, v2 float64) (string, error) {
  	var err error
  
  	// sql query
  	const sqlstr = `SELECT pg_catalog.money($1, $2, $3)`
  
  	// run query
  	var ret string
  	XOLog(sqlstr, v0, v1, v2)
  	err = db.QueryRow(sqlstr, v0, v1, v2).Scan(&ret)
  	if err != nil {
  		return "", err
  	}
  
  	return ret, nil
  }
docs: // Money calls the stored procedure 'pg_catalog.money(bigint, integer, numeric) money' on db.