Re: [HACKERS] WIP Patch: Precalculate stable functions,infrastructure v1

Hello!

Here's v2 of the patches. Changes from v1:
* Precalculation of DistinctExpr, NullIfExpr, ScalarArrayOpExpr (as 
usual, if their operators are not volatile theirselves, don't return set 
and their arguments are consts or cached expressions too);
* Removed trailing whitespaces.
Also, as I tested, it seems that there is no obvious performance 
degradation too on regular queries (according to pgbench).

Patches are attached. Any suggestions are welcome!

-- 
Marina Polyakova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
-- 
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers