| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
| Cc: | 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 22:58:55 |
| Message-ID: | CAKJS1f8H49JK8uwVhUdNpCKN1OxWJ1tKxbPj54AQre=as0Jr0A@mail.gmail.com |
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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!
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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