Andrew - Supernews <[EMAIL PROTECTED]> writes:
> On 2005-05-29, Tom Lane <[EMAIL PROTECTED]> wrote:
>> 2. Backend infers actual type of param 1 from context as BYTEA.

> Hrm. I was thinking of the case where the backend can't necessarily do
> this, but in fact in that case the Parse seems to fail.

Right, deliberately so, for precisely the reason that we need to know
the correct input converters to use.

>> Offhand I think the only way you could actually invoke UNKNOWN's binary
>> input converter is by executing a PREPARE with a parameter position
>> specifically declared as UNKNOWN, viz

> Which of course leads to the question of why UNKNOWN has a binary input
> converter at all...

Maybe it shouldn't.  It does need a binary output converter, to avoid
gratuitous failures in cases like
        SELECT 'foo';
so I figure it's probably best to leave the input converter there ...

                        regards, tom lane

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