is necessary to recheck cached data in fn_extra?

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: is necessary to recheck cached data in fn_extra?
Date: 2019-08-07 05:32:04
Message-ID: CAFj8pRCkabEevP_GPH9GFfq8Sz1Fs1UOqCwcjQKO5NCCABoGmw@mail.gmail.com
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Hi

I should to use a cache accessed via fn_extra. There will be stored data
about function parameters (types). If I understand correctly, these data
should be stable in query, and then recheck is not necessary. Is it true?

Regards

Pavel

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