Re: A modest proposal vis hierarchical queries: MINUS in the column list

From: Julien Rouhaud <rjuju123(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Mark Zellers <mark(dot)zellers(at)workday(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: A modest proposal vis hierarchical queries: MINUS in the column list
Date: 2021-06-08 02:50:08
Message-ID: 20210608025008.6mpbphpnfluqmyy4@nol
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On Mon, Jun 07, 2021 at 06:10:58PM -0400, Tom Lane wrote:
>
> I'm fairly disinclined to do anything about it though, because I'm
> afraid of the SQL committee standardizing some other syntax for the
> same idea in future (or maybe worse, commandeering the same keyword
> for some other feature). It doesn't seem quite valuable enough to
> take those risks for.

Also, isn't the OP problem already solved by the SEARCH / CYCLE grammar
handling added in 3696a600e2292?

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