Re: Hash support for grouping sets

From: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Mark Dilger <hornschnorter(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Hash support for grouping sets
Date: 2017-03-23 23:10:45
Message-ID: 87lgrv8ucy.fsf@news-spur.riddles.org.uk
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>>>>> "Andres" == Andres Freund <andres(at)anarazel(dot)de> writes:

Andres> a) cast result of lfirst/lnext/whatnot.

Again, what we need here is something like

#define lfirst_node(_type_, l) (castNode(_type_, lfirst(l)))

etc.

--
Andrew (irc:RhodiumToad)

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