// queryZone retrieves the specific ZoneConfig associated with the supplied ID, // if it exists. func (s *adminServer) queryZone( session *sql.Session, id sqlbase.ID, ) (config.ZoneConfig, bool, error) { const query = `SELECT config FROM system.zones WHERE id = $1` params := parser.NewPlaceholderInfo() params.SetValue(`1`, parser.NewDInt(parser.DInt(id))) r := s.server.sqlExecutor.ExecuteStatements(session, query, params) if err := s.checkQueryResults(r.ResultList, 1); err != nil { return config.ZoneConfig{}, false, err } result := r.ResultList[0] if len(result.Rows) == 0 { return config.ZoneConfig{}, false, nil } var zoneBytes []byte scanner := resultScanner{} err := scanner.ScanIndex(result.Rows[0], 0, &zoneBytes) if err != nil { return config.ZoneConfig{}, false, err } var zone config.ZoneConfig if err := zone.Unmarshal(zoneBytes); err != nil { return config.ZoneConfig{}, false, err } return zone, true, nil }