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Re: Querying an index's btree version - Mailing list pgsql-general

From Peter Geoghegan
Subject Re: Querying an index's btree version
Date
Msg-id CAH2-Wz=mNy95mS30DbcXqUpiWUVWU9vwz4GqzQcN5u_FHE1Rbg@mail.gmail.com
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In response to Re: Querying an index's btree version  (Darren Lafreniere <dlafreniere@onezero.com>)
List pgsql-general
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On Wed, Mar 11, 2020 at 2:13 PM Darren Lafreniere
<dlafreniere@onezero.com> wrote:
> when you restore a DB from a backup, does the restored index use the old format or the latest one?

If you use pg_restore, it uses the latest index format.

If you're using pg_upgrade, the version won't change unless and until
you REINDEX. This includes cases where you're running pg_upgrade
against a restored physical backup.

-- 
Peter Geoghegan

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