pg.ddx.io pgsql-sql@postgresql.org mailing list archive
help / color / mirror / Atom feedCompute hash of a table?
2+ messages / 2 participants
[nested] [flat]
* Compute hash of a table?
@ 2006-05-02 18:54 Peter Manchev <pmanchev@hotmail.com>
2006-05-03 08:07 ` Re: Compute hash of a table? Markus Schaber <schabi@logix-tt.com>
0 siblings, 1 reply; 2+ messages in thread
From: Peter Manchev @ 2006-05-02 18:54 UTC (permalink / raw)
To: pgsql-sql
Hi All
I need to determine whether the content of a given table has changed from
the previous time I've checked it. so, my initial idea is to calculate a
hash value of the content of the whole table, may be with custom aggregate
function or something.
My question is:
Is it possible to get the last time(stamp) when the content of a given table
in pgsql has changed???
Thanks!
Pete
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Compute hash of a table?
2006-05-02 18:54 Compute hash of a table? Peter Manchev <pmanchev@hotmail.com>
@ 2006-05-03 08:07 ` Markus Schaber <schabi@logix-tt.com>
0 siblings, 0 replies; 2+ messages in thread
From: Markus Schaber @ 2006-05-03 08:07 UTC (permalink / raw)
To: Peter Manchev <pmanchev@hotmail.com>; +Cc: pgsql-sql
Hi, Peter,
Peter Manchev wrote:
> Is it possible to get the last time(stamp) when the content of a given
> table in pgsql has changed???
My solution would be to add a trigger to the table which updates a
timestamp in a second table on every insert/update/delete.
HTH,
Markus
--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS
Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2006-05-03 08:07 UTC | newest]
Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2006-05-02 18:54 Compute hash of a table? Peter Manchev <pmanchev@hotmail.com>
2006-05-03 08:07 ` Markus Schaber <schabi@logix-tt.com>
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox