New feature: accumulative functions.

From: pasman pasmański <pasman(dot)p(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: New feature: accumulative functions.
Date: 2011-09-25 13:19:28
Message-ID: CAOWY8=aNHa_9+T7Uh=NO5q86u+Y292aD_e6Bq6fsBf0WOdrnPA@mail.gmail.com
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Hi.

I propose to add "accumulative" flag to a function definition. This
flag would be set for function f(x) which is accumulative and
immutable.

This flag allows to use an index on x for clauses containing f(x):

where f(x) = const
where f(x) > const

and so on.

--
------------
pasman

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