| From: | David Fetter <david(at)fetter(dot)org> |
|---|---|
| To: | Marko Tiikkaja <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi> |
| Cc: | Tatsuo Ishii <ishii(at)postgresql(dot)org>, robertmhaas(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: regclass without error? |
| Date: | 2010-09-03 14:21:00 |
| Message-ID: | 20100903142100.GA1526@fetter.org |
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| Thread: | |
| Lists: | pgsql-hackers |
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(at)fetter(dot)org> http://fetter.org/
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