Re: What needs to be done for real Partitioning?
Hannu Krosing <hannu@tm.ee>
From: Hannu Krosing <hannu@tm.ee>
To: PFC <lists@boutiquenumerique.com>
Cc: Josh Berkus <josh@agliodbs.com>, pgsql-performance@postgresql.org
Date: 2005-03-21T18:26:24Z
Lists: pgsql-performance
On P, 2005-03-20 at 00:52 +0100, PFC wrote: > > tableoid would accomplish that already, assuming that the "partitioned > > table" is effectively a view on separate physical tables. > > > > regards, tom lane > > Very good. > > Also note the possibility to mark a partition READ ONLY. Or even a table. > It does not seem very useful but just think that for instance the "1999", > "2000" ... "2004" partitions of a big archive probably never change. > READLONY means we're sure they never change, thus no need to backup them > every time. Keeping the example of some DB arranged by years / current > year / current month, Just backup the "current month" part every day and > the "current year" every month when you switch partitions. > This could be achieved also by storing the time of last modification of a > table somewhere. Would we still need regular VACUUMing of read-only table to avoid OID-wraparound ? -- Hannu Krosing <hannu@tm.ee>