Re: regclass without error?

> Tatsuo Ishii <ishii(at)postgresql(dot)org> writes:
> > Is there any way to use regclass without having ERROR?
>
> > pgpool-II needs to find the oid from table name and for the purpose it
> > issues something like "SELECT 'table_name'::regproc::oid". Problem is,
> > if the table does not exist, an error occured and the transaction
> > aborts. Ideally if the table does not exist, the SELECT returns 0
> > (InvalidOid).
>
> I don't think the cast should act that way, but I could see providing a
> separate conversion function that returns 0 ... or perhaps better NULL
> ... if no match.

Such a function should be very helpfull. Great!
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
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