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

> and here I send infrastructure patch which includes <...>

Next 2 patches:

Patch 'planning and execution', which includes:
- replacement nonvolatile functions and operators by appropriate cached 
expressions;
- planning and execution cached expressions;
- regression tests.

Patch 'costs', which includes cost changes for cached expressions 
(according to their behaviour).

-- 
Marina Polyakova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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