am 25.04.2006, um 2:01:49 -0700 mailte SunWuKung folgendes:
> I tried this but couldn't find out what would be the WHEN condition for
>
> Select Cast('asdf' as numeric)
> ERROR: invalid input syntax for type numeric
create or replace function check_numeric(varchar) returns bool as $$
declare
i numeric;
begin
i := $1::numeric;
return 't'::bool;
EXCEPTION WHEN invalid_text_representation then
return 'f'::bool;
end;
$$ language plpgsql immutable strict;
HTH, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
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