On 2010-09-03 4:46 PM, Tatsuo Ishii wrote:
>> You can write a query against the system catalog tables.
>
> That was pretty hard than I though(schema search path etc.).
>
>> Or you could
>> install a function that wraps the regclass cast in an exception
>> handler.
>
> That requires users to install the function. Annoying for users.

How about using a SAVEPOINT before the cast?  Wouldn't fail your 
transaction..


Regards,
Marko Tiikkaja

In response to

• Re: regclass without error? at 2010-09-03 13:46:40 from Tatsuo Ishii

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• Re: regclass without error? at 2010-09-03 14:21:00 from David Fetter

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