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Re: more support for various frame types of window functions - Mailing list pgsql-hackers

From Andrew Gierth
Subject Re: more support for various frame types of window functions
Date
Msg-id 877htzzvco.fsf@news-spur.riddles.org.uk
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In response to Re: more support for various frame types of window functions  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Responses Re: more support for various frame types of window functions
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>>>>> "Heikki" == Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> writes:
Heikki> Yeah, we need the reinitialization support to handle the generic case.
Heikki> One idea is to take a copy of the state datum after each row.

Some existing aggregates, notably array_agg, rely on the assumption
that this never happens.

-- 
Andrew (irc:RhodiumToad)

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