Re: Setting variable

On 6/18/07, Ranieri Mazili <rmazili(at)wgsystems(dot)com(dot)br> wrote:
>
> Hello,
> I need to know why can't I do it?
>
> CREATE OR REPLACE FUNCTION lost_hours_temp(date)
> RETURNS text AS
> $BODY$
> DECLARE
> START_DATE date;
> END_DATE date;
> QUERY text;
> BEGIN
> START_DATE := $1;
> END_DATE := START_DATE - interval '3 year';
>
> The last line (END_DATE := START_DATE - interval '3 year';) generate the
> following error:
>
> ERROR: operator is not unique: "unknown" / "unknown"
> SQL state: 42725
> Hint: Could not choose a best candidate operator. You may need to add
> explicit type casts.
> Context: PL/pgSQL function "lost_hours_temp" line 10 at assignment
>
> How can I solve it?
>
> Thanks

Try adding explicit casts with the "::" operator.