Am Montag, 7. Mai 2007 15:53 schrieb Jonas Henriksen: > while if I add a GROUP BY data_logger the query uses a seq scan and a > > lot of time: > >> explain analyze SELECT max(date_time) FROM data_values GROUP BY > data_logger_id; I don't think there is anything you can do about this. -- Peter Eisentraut http://developer.postgresql.org/~petere/
