Thread: Setting variable

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

On Jun 18, 2007, at 9:29 , Ranieri Mazili wrote:

> 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

Note that the error is at line 10. You've only shown lines 1 through
7 of the function body, so you haven't actually shown us where the
error is.

Michael Glaesemann
grzm seespotcode net