Re: [PERFORM] now() gives same time within the session
On 12/07/10 14:15, A. Kretschmer wrote: Use timeofday() instead, now() returns the transaction starting time. timeofday() is a legacy function kept only for backwards-compatibility. It returns a string, which is quite awkward. Use clock_timestamp() instead. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
[PERFORM] now() gives same time within the session
Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from test_time; insert into test_time select now(); SELECT pg_sleep(10); insert into test_time select now(); SELECT pg_sleep(10); insert into test_time select now(); SELECT pg_sleep(10); insert into test_time select now(); SELECT pg_sleep(10); select * from test_time; 2010-07-12 12:43:40.509746 2010-07-12 12:43:40.509746 2010-07-12 12:43:40.509746 2010-07-12 12:43:40.509746 Atul Goel SENIOR DEVELOPER Global DataPoint Middlesex House, 34-42 Cleveland Street London W1T 4LB, UK T: +44 (0)20 7079 4827 M: +44 (0)7846765098 www.globaldatapoint.comhttp://www.globaldatapoint.com/ This e-mail is confidential and should not be used by anyone who is not the original intended recipient. Global DataPoint Limited does not accept liability for any statements made which are clearly the sender's own and not expressly made on behalf of Global DataPoint Limited. No contracts may be concluded on behalf of Global DataPoint Limited by means of e-mail communication. Global DataPoint Limited Registered in England and Wales with registered number 3739752 Registered Office Middlesex House, 34-42 Cleveland Street, London W1T 4LB
Re: [PERFORM] now() gives same time within the session
In response to atul.g...@globaldatapoint.com : Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from test_time; insert into test_time select now(); Use timeofday() instead, now() returns the transaction starting time. BEGIN test=*# select now(); now --- 2010-07-12 13:13:28.907043+02 (1 row) test=*# select timeofday(); timeofday -- Mon Jul 12 13:13:36.187703 2010 CEST (1 row) test=*# select now(); now --- 2010-07-12 13:13:28.907043+02 (1 row) test=*# Regards, Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: - Header) GnuPG: 0x31720C99, 1006 CCB4 A326 1D42 6431 2EB0 389D 1DC2 3172 0C99 -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] now() gives same time within the session
Sure thanks a lot. Regards, Atul Goel -Original Message- From: pgsql-performance-ow...@postgresql.org [mailto:pgsql-performance-ow...@postgresql.org] On Behalf Of A. Kretschmer Sent: 12 July 2010 12:15 To: pgsql-performance@postgresql.org Subject: Re: [PERFORM] now() gives same time within the session In response to atul.g...@globaldatapoint.com : Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from test_time; insert into test_time select now(); Use timeofday() instead, now() returns the transaction starting time. BEGIN test=*# select now(); now --- 2010-07-12 13:13:28.907043+02 (1 row) test=*# select timeofday(); timeofday -- Mon Jul 12 13:13:36.187703 2010 CEST (1 row) test=*# select now(); now --- 2010-07-12 13:13:28.907043+02 (1 row) test=*# Regards, Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: - Header) GnuPG: 0x31720C99, 1006 CCB4 A326 1D42 6431 2EB0 389D 1DC2 3172 0C99 -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance This e-mail is confidential and should not be used by anyone who is not the original intended recipient. Global DataPoint Limited does not accept liability for any statements made which are clearly the sender's own and not expressly made on behalf of Global DataPoint Limited. No contracts may be concluded on behalf of Global DataPoint Limited by means of e-mail communication. Global DataPoint Limited Registered in England and Wales with registered number 3739752 Registered Office Middlesex House, 34-42 Cleveland Street, London W1T 4LB -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] now() gives same time within the session
On Mon, Jul 12, 2010 at 4:15 AM, A. Kretschmer andreas.kretsch...@schollglas.com wrote: In response to atul.g...@globaldatapoint.com : Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from test_time; insert into test_time select now(); Use timeofday() instead, now() returns the transaction starting time. Is this part of the SQL standard? -- Rob Wultsch wult...@gmail.com -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] now() gives same time within the session
On 12 July 2010 14:11, Rob Wultsch wult...@gmail.com wrote: On Mon, Jul 12, 2010 at 4:15 AM, A. Kretschmer andreas.kretsch...@schollglas.com wrote: In response to atul.g...@globaldatapoint.com : Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from test_time; insert into test_time select now(); Use timeofday() instead, now() returns the transaction starting time. Is this part of the SQL standard? I don't believe it is. See http://www.postgresql.org/docs/current/static/functions-datetime.html#FUNCTIONS-DATETIME-CURRENT for more info. Thom -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] now() gives same time within the session
In response to Rob Wultsch : On Mon, Jul 12, 2010 at 4:15 AM, A. Kretschmer andreas.kretsch...@schollglas.com wrote: Use timeofday() instead, now() returns the transaction starting time. Is this part of the SQL standard? Don't know, sorry. Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: - Header) GnuPG: 0x31720C99, 1006 CCB4 A326 1D42 6431 2EB0 389D 1DC2 3172 0C99 -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] now() gives same time within the session
On Mon, Jul 12, 2010 at 06:11:31AM -0700, Rob Wultsch wrote: On Mon, Jul 12, 2010 at 4:15 AM, A. Kretschmer andreas.kretsch...@schollglas.com wrote: In response to atul.g...@globaldatapoint.com : Hi, I need to log the start and end time of the procedures in a table. But the start and end time are same. This is how I recreated the issue. create table test_time (time timestamp); delete from ?test_time; insert into test_time select now(); Use timeofday() instead, now() returns the transaction starting time. Is this part of the SQL standard? No, see section 9.9.4 of the manual. Cheers, Ken -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
