Re: Incorrect result of bitmap heap scan. - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Incorrect result of bitmap heap scan.
Date
Msg-id 3pv2uqpgchv4x23q6h6r7rwsh5kkybnq4a3vrrhgko3pmoeabh@ruh77u5xms4w
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In response to Re: Incorrect result of bitmap heap scan.  ("Core Studios Inc." <corestudiosinc@gmail.com>)
List pgsql-hackers
Hi,

On 2025-09-16 15:55:49 +0300, Core Studios Inc. wrote:
> Following up to correct my previous email: the query plan did not really
> change - we see Bitmap Heap Scans even before the upgrade. Therefore, the
> query plan doesn't seem to have changed after the upgrade.
> 
> However after the upgrade it seems that those queries are doing more disk IO
> (increased index_blocks_read in that table).

Without the query + plan I can't judge whether the query could even have
benefited from the, fairly narrow, optimization...

Greetings,

Andres



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