2007/9/10, Martijn van Oosterhout <kleptog@xxxxxxxxx>: > On Mon, Sep 10, 2007 at 08:44:07PM +0500, rihad wrote: > > Hi, I have two columns start_time & stop_time declared as "TIME". I'd > > like to compute the difference between the two times in seconds, all in db: > > > > SELECT > > (CAST(stop_time AS SECONDS) + 86400 - CAST(start_time AS SECONDS)) > > % 86400; > > At a guess I'd say you should simply subtract the two (ie stop_time - > start_time) and then use extract() to pull the seconds out. > > Have a nice day, > -- > Martijn van Oosterhout <kleptog@xxxxxxxxx> http://svana.org/kleptog/ > > From each according to his ability. To each according to his ability to litigate. > sample:postgres=# select extract(epoch from time '10:01:30' - time '10:00:00'); date_part ----------- 90 (1 row) Regards Pavel Stehule ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
