Re: bugfix - VIP: variadic function ignore strict flag

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, jgd(at)well(dot)com
Subject: Re: bugfix - VIP: variadic function ignore strict flag
Date: 2010-02-09 17:56:52
Message-ID: 18702.1265738212@sss.pgh.pa.us
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Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> 2010/2/9 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
>> So what? "variadic any" is different in a lot of ways.

> implementation is different, but from users perspective there can not
> be differences. I am not sure. From my programmer's view is all ok.
> But I believe so from customer view, there can be a surprise - because
> NULL value doesn't skip function call.

It's going to be a bit surprising in any case. If I write

foo(1, VARIADIC ARRAY[2, NULL])

then what I'm passing is not a null, and so I'd be surprised if the
function wasn't executed.

I think we should just document this, not make a definitional change
that seems as likely to break applications as fix them.

regards, tom lane

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