Horton

Re: WIP: Faster Expression Processing v4

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>, pgsql-hackers@postgresql.org
Date: 2017-03-14T17:52:10Z
Lists: pgsql-hackers 
On 2017-03-14 08:44:24 -0300, Alvaro Herrera wrote:
> Patch 0003 is huge.

I suspect you mean 0004?  If so - yes :(.  I unfortunately don't think
there's a useful way to split it in smaller chunks - I originally moved
ops over one-by-one, but that required a lot of duplicated structs and
such...


> It would be good to have someone at least read it before pushing, but
> I don't think anyone other than you has done so.

I'd love for somebody else
to look through it, I tried asking multiple times...  Seems like
threatening a commit is the best way to get it :P


- Andres

Commits

  1. Improve performance of ExecEvalWholeRowVar.

  2. Remove unreachable code in expression evaluation.

  3. Faster expression evaluation and targetlist projection.

  4. Avoid syntax error on platforms that have neither LOCALE_T nor ICU.

  5. Add configure test to see if the C compiler has gcc-style computed gotos.

  6. Improve regression test coverage for TID scanning.

  7. Improve expression evaluation test coverage.

  8. Fix two errors with nested CASE/WHEN constructs.