Horton

Re: pgsql: Faster expression evaluation and targetlist projection.

David Rowley <david.rowley@2ndquadrant.com>

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From: David Rowley <david.rowley@2ndquadrant.com>
To: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Andres Freund <andres@anarazel.de>, pgsql-committers <pgsql-committers@postgresql.org>
Date: 2017-03-25T22:58:55Z
Lists: pgsql-hackers 
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

Commits

  1. Blindly attempt to fix sepgsql tests.

  2. Faster expression evaluation and targetlist projection.