Re: User defined exceptions

2015-07-15 16:10 GMT+02:00 Alex Ignatov <a(dot)ignatov(at)postgrespro(dot)ru>:

> Hello all!
> Trying to emulate "named" user defined exception with:
> CREATE OR REPLACE FUNCTION exception_aaa () RETURNS text AS $body$
> BEGIN
> return 31234;
> END;
> $body$
> LANGUAGE PLPGSQL
> SECURITY DEFINER
> ;
>
> do $$
> begin
> raise exception using errcode=exception_aaa();
> exception
> when sqlstate exception_aaa()
> then
> raise notice 'got exception %',sqlstate;
> end;
> $$
>
> Got:
>
> ERROR: syntax error at or near "exception_aaa"
> LINE 20: sqlstate exception_aaa()
>
> I looks like "when sqlstate exception_aaa()" doesn't work.
>
> How can I catch exception in this case?
>

this syntax is working only for builtin exceptions. PostgreSQL has not
declared custom exceptions like SQL/PSM.

You have to use own sqlcode and catch specific code.

Regards

Pavel

> --
> Alex Ignatov
> Postgres Professional: http://www.postgrespro.com
> The Russian Postgres Company
>
>
>
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