Re: pgsql: Faster expression evaluation and targetlist projection.

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От David Rowley
Тема Re: pgsql: Faster expression evaluation and targetlist projection.
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Msg-id CAKJS1f8H49JK8uwVhUdNpCKN1OxWJ1tKxbPj54AQre=as0Jr0A@mail.gmail.com
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Ответ на Re: pgsql: Faster expression evaluation and targetlist projection.  (Thomas Munro <thomas.munro@enterprisedb.com>)
Ответы Re: pgsql: Faster expression evaluation and targetlist projection.  (Michael Paquier <michael.paquier@gmail.com>)
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On 26 March 2017 at 09:55, Thomas Munro <thomas.munro@enterprisedb.com> wrote:
> On Sun, Mar 26, 2017 at 11:11 AM, Andres Freund <andres@anarazel.de> wrote:
>> Faster expression evaluation and targetlist projection.
>>
>> This replaces the old, recursive tree-walk based evaluation, with
>> non-recursive, opcode dispatch based, expression evaluation.
>> Projection is now implemented as part of expression evaluation.
>>
>> This both leads to significant performance improvements, and makes
>> future just-in-time compilation of expressions easier.
>
> This is a huge achievement.  Congratulations!

Agreed. Congratulations!


--
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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