Re: the doc should mention one particular aspect of partial indexes

From: Chaouki Dhib <chaodhib(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-docs(at)lists(dot)postgresql(dot)org
Subject: Re: the doc should mention one particular aspect of partial indexes
Date: 2021-01-19 21:23:52
Message-ID: CAD6mX12NLTXTnwWz_qpOsKLsE8CZC3yXoU=ARjDeDpMDbhCzeA@mail.gmail.com
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I guess it isn't. My apologies. This is something I ignored about PG
until now. Thank you for your reply.

Le lun. 18 janv. 2021 à 21:39, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> a écrit :
>
> PG Doc comments form <noreply(at)postgresql(dot)org> writes:
> > I think the documentation should mention one particular aspect of b-tree
> > partial indexes:
> > Say we have a row that satisfy a partial index's predicate. That row will be
> > referenced by the partial index. Say now that this row gets updated in such
> > a way that the updated row no longer satisfies the predicate. The entry of
> > that row in the index (more precisely, the row previous version) is still
> > kept in a leaf node of the b-tree until a VACUUM is issued on the index's
> > table.
>
> How is this different from the behavior for any other dead row version?
>
> regards, tom lane

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