Re: IsDate function in plpgsql

I think someone will show you a better way, but if all you need to do is
account for the NULLS...

begin
if $1 is null then
return 0;
else
perform $1::date;
return 1;
end if;
exception when others then
return 0;
end

On 4/27/06 10:34 AM, "Sistemas C.M.P." <sistemascmp(at)redynet4(dot)com(dot)ar> wrote:

> A few days ago, someone in this list gives me a function (plpgsql) that
> evaluates if a string is a valid date or not.
> It returns 1 or 0 (valid/Not Valid)
> The problem is that if the argument is a NULL field the function returns 1.
> I don't have experience with plpgsql language.
> This is the function
>
> begin
> perform $1::date;
> return 1;
> exception when others then
> return 0;
> end
>