Re: [PATCH] Generic type subscripting

From: Arthur Zakirov <a(dot)zakirov(at)postgrespro(dot)ru>
To: Dmitry Dolgov <9erthalion6(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, David Steele <david(at)pgmasters(dot)net>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] Generic type subscripting
Date: 2017-09-16 22:04:55
Message-ID: 20170916220454.GA15505@arthur.localdomain
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On Fri, Sep 15, 2017 at 10:02:00PM +0200, Dmitry Dolgov wrote:
>
> So, I've implemented a patch for that in form of a `DEPENDS ON` syntax for
> creating a function.

In my opinion, 'DEPENDS ON' syntax is not actually appropriate here. It
also looks like a not very good hack to me.

Moreover user can implement subscripting to its own type without using
'DEPENDS ON' syntax. And he will face the bug mentioned above too.

--
Arthur Zakirov
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company

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