Re: RAISE with C?

Hello

2010/12/20 Elliot Chance <elliotchance(at)gmail(dot)com>:
> Hi,
>
> Is it possible to do the equivalent of RAISE EXCEPTION inside a C-function? Like this:
>
>

sure, there are functions elog and ereport

Regards

Pavel Stehule

> PG_FUNCTION_INFO_V1(check_something);
> Datum check_something(PG_FUNCTION_ARGS)
> {
>        // RAISE EXCEPTION 'bla bla'
> }
>
> CREATE OR REPLACE FUNCTION do_check() RETURNS text AS $$
> BEGIN
>        PERFORM check_something();
>        RETURN 'All good';
> EXCEPTION
>        WHEN RAISE EXCEPTION THEN
>                RETURN 'Something bad';
> END;
> $$ LANGUAGE plpgsql IMMUTABLE;
>
>
> That code may not work but you get the idea, I want to throw an exception from a C function that can be caught in PL/pgSQL. Also is it further possible to catch the message that RAISE EXCEPTION sends? Like 'Something bad: bla bla'
>
> Thanks,
> Elliot
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