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Re: Some ExecSeqScan optimizations - Mailing list pgsql-hackers
From
Nikita Malakhov
Subject
Re: Some ExecSeqScan optimizations
Date
July 11
14:03:42
Msg-id
CAN-LCVMMXqLj=j8Edqd99E9Pe1ayhWc8KyotfUfxv9-qV6ziqg@mail.gmail.com
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In response to
Re: Some ExecSeqScan optimizations
(Amit Langote <amitlangote09@gmail.com>)
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Re: Some ExecSeqScan optimizations
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Hi Amit!
It's a pity I missed this thread when you developed the patch.
I've developed a feature recently and discovered that SeqScan
does not make use of scan keys, and there is a Tom Lane's
comment regarding this:
* Note that unlike IndexScan, SeqScan never use keys in heap_beginscan
* (and this is very bad) - so, here we do not check are keys ok or not.
Have you considered passing scan keys like it is done in IndexScan?
Thanks!
--
Regards,
Nikita Malakhov
Postgres Professional
The Russian Postgres Company
https://postgrespro.ru/
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