Hi folks, I need help please.
I have a table of trip section details which includes a trip ID, start time as an offset, and a duration for that section. I need to extract the full trip duration by adding the highest offset to it's duration. I can't simply use sum() on the duation as that would not include standing time. Using the data below I would like to get: 1 | 01:35:00 2 | 01:35:00 3 | 01:06:00 4 | 01:38:00 5 | 01:03:00 6 | 01:06:00 from timetable=> select stts_id, stts_offset, stts_duration from standard_trip_sections order by stts_id, stts_offset; stts_id | stts_offset | stts_duration ---------+-------------+--------------- 1 | 00:00:00 | 00:18:00 1 | 00:19:00 | 00:26:00 1 | 00:47:00 | 00:13:00 1 | 01:13:00 | 00:22:00 2 | 00:00:00 | 00:18:00 2 | 00:20:00 | 00:09:00 2 | 00:29:00 | 00:17:00 2 | 00:50:00 | 00:13:00 2 | 01:13:00 | 00:22:00 3 | 00:00:00 | 00:20:00 3 | 00:28:00 | 00:15:00 3 | 00:44:00 | 00:22:00 3 | 00:48:00 | 00:20:00 4 | 00:00:00 | 00:20:00 4 | 00:28:00 | 00:15:00 4 | 00:48:00 | 00:13:00 4 | 01:01:00 | 00:13:00 4 | 01:18:00 | 00:20:00 5 | 00:00:00 | 00:18:00 5 | 00:20:00 | 00:09:00 5 | 00:29:00 | 00:17:00 5 | 00:50:00 | 00:13:00 6 | 00:00:00 | 00:15:00 6 | 00:20:00 | 00:13:00 6 | 00:33:00 | 00:13:00 6 | 00:46:00 | 00:20:00 (26 rows) timetable=> -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql