| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-committers <pgsql-committers(at)postgresql(dot)org> |
| Subject: | Re: pgsql: Faster expression evaluation and targetlist projection. |
| Date: | 2017-03-25 22:55:13 |
| Message-ID: | CAEepm=31xpgCHqv=vduX08gNOw90VQSyK_eN78NAYhwb-OO+eg@mail.gmail.com |
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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!
--
Thomas Munro
http://www.enterprisedb.com
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