Re: regclass without error?

On Fri, Sep 03, 2010 at 05:10:44PM +0300, Marko Tiikkaja wrote:
> 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..

For unattended operation, there are some issues:

* Generating appropriate SAVEPOINT names
* Keeping track of same
* Detecting errors
* Issuing ROLLBACKs to the aforementioned SAVEPOINT

None of this works super well for a bulk load.

Cheers,
David.
-- 
David Fetter <david@fetter.org> http://fetter.org/
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