On Thu, Oct 2, 2008 at 8:44 PM, Alvaro Herrera
<
alvherre@commandprompt.com> wrote:
> Rob Richardson wrote:
>
>> Here's what I need to do:
>>
>> IF query_check_fails THEN
>> UPDATE some_table SET some_value = 0 WHERE some_condition_is_true;
>> RAISE EXCEPTION 'Look, you idiot, do it right next time!';
>> END;
>>
>> I need the update to work, but I need to raise the exception so the C++
>> code recognizes the error. How can I do both?
>
> You need an autonomous transaction, which Postgres does not support
> directly but you can implement using dblink or a plperl function that
> connects back to the database.
>
