code: func Networkjoinsel(db XODB, v0 pgtypes.Internal, v1 pgtypes.Oid, v2 pgtypes.Internal, v3 int16, v4 pgtypes.Internal) (float64, error) {
  	var err error
  
  	// sql query
  	const sqlstr = `SELECT pg_catalog.networkjoinsel($1, $2, $3, $4, $5)`
  
  	// run query
  	var ret float64
  	XOLog(sqlstr, v0, v1, v2, v3, v4)
  	err = db.QueryRow(sqlstr, v0, v1, v2, v3, v4).Scan(&ret)
  	if err != nil {
  		return 0.0, err
  	}
  
  	return ret, nil
  }
docs: // Networkjoinsel calls the stored procedure 'pg_catalog.networkjoinsel(internal, oid, internal, smallint, internal) double precision' on db.