From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
---|---|
To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
Cc: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-committers <pgsql-committers(at)postgresql(dot)org> |
Subject: | Re: pgsql: Faster expression evaluation and targetlist projection. |
Date: | 2017-03-25 23:53:50 |
Message-ID: | CAB7nPqRUoMJ+iZjgKLqCG_iLhM9SYks6wFzTPEHKsA3Su5xt-g@mail.gmail.com |
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On Sun, Mar 26, 2017 at 7:58 AM, David Rowley
<david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> On 26 March 2017 at 09:55, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> wrote:
>> On Sun, Mar 26, 2017 at 11:11 AM, Andres Freund <andres(at)anarazel(dot)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!
Hurray. Congratulations.
--
Michael
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