Re: IsDate function in plpgsql

[Ketema Harris <ketema@xxxxxxxxx>]

Title: Re: [ADMIN] 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@xxxxxxxxxxxxxxx> 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