Re: arrays as pl/perl input arguments [PATCH]

From: "David E(dot) Wheeler" <david(at)kineticode(dot)com>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Alex Hunsaker <badalex(at)gmail(dot)com>, Alexey Klyukin <alexk(at)commandprompt(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: arrays as pl/perl input arguments [PATCH]
Date: 2011-01-12 19:39:56
Message-ID: E79E2CC9-2A2C-46EF-81E3-7DF25794B0C0@kineticode.com
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On Jan 12, 2011, at 11:36 AM, Alvaro Herrera wrote:

>> [ Id actually vote for _not_ having a compatibility option at all, we
>> change more major things than this IMHO every major release. (And even
>> then some major things in minor releases, for example the removal of
>> Safe.pm) ]
>
> I think the main question here is: how loudly is existing code going to
> break? If the breakage is silent, it's going to be very problematic.
> If functions fail to run at all, then we can live without the
> compatibility option.

I suspect it'd be quiet, unfortunately, since there are a bazillion ad hoc implementations of a Perl SQL array parser, and many of them, I suspect, don't complain if the string doesn't look like an SQL array. They would just parse a string like "ARRAY(0x118ee2a0)" and return an empty array, or a NULL.

Best,

David

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