Re: named parameters in SQL functions

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Chernow <ac(at)esilo(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: named parameters in SQL functions
Date: 2009-11-16 02:09:32
Message-ID: 28925.1258337372@sss.pgh.pa.us
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Andrew Chernow <ac(at)esilo(dot)com> writes:
> Tom Lane wrote:
>> (But having said that, an alternate qualification name is something
>> that could be implemented if there were any agreement on what to use.)

> Would something like ARG.name be acceptable?

It all depends on how likely you think it is that the function would use
a table name or alias matching ARG (or any other proposal).

It's certainly true that the function name itself is not immune from
conflicts of that sort ... in fact I think we saw a bug report recently
from someone who had intentionally chosen a plpgsql function name equal
to a table name used in the function :-(. So I'm not wedded to the
function name entirely. But it has precedent in plpgsql, and that
precedent came from Oracle, so I don't think we should lightly make SQL
functions do something different.

regards, tom lane

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