On 10/22/15 5:07 PM, Robert Haas wrote:
On Thu, Oct 22, 2015 at 5:51 PM, Jim Nasby<jim.na...@bluetreble.com>  wrote:
>It's also a permanent ID when the relation is first created.
No it isn't.

Is there no case where it can be a permanent XID for a table or toast table?

The other issue is relminmxid, which if you're looking at relfrozenxid you'd want to look at as well. So you can't do a simple WHERE here.

Perhaps a better way to handle this is to just add correctly computed age fields to pg_stat_all_tables and pg_stat_database.
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com

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