Re: Function syntax ?

try

create or replace function fcn_max_dt(p_dt timestamp without time zone,
                                      p_dt2 timestamp without time zone)

returns imestamp without time zone as $$
select greatest($1,$2);
$$ language sql;

or

begin
 return greatest(p_dt, p_dt2);
end;
$$ language plpgsql;

or
begin
 if p_dt > p_dt2 then
   return p_dt;
 else
   return p_dt2;
 end if;
end;
$$ language sql;

plpgsql is scripting language and almost is better minimalize number
of statements in function.

Regards
Pavel Stehule

2008/9/9 Ruben Gouveia <rubes7202@gmail.com>:

> Does this syntax look correct? Can anyone think of a better way to write
> this?
>
> This function will accept two timestamp parameters and determine the highest
> of the two?
>
> create or replace function fcn_max_dt(p_dt timestamp without time zone,
>                                       p_dt2 timestamp without time zone)
> returns timestamp without time zone as $$
>   DECLARE
>       v_dt timestamp without time zone;
>       v_dt2 timestamp without time zone;
>
>   BEGIN
>     v_dt := p_dt;
>     v_dt2 := p_dt2;
>
>     if v_dt >= v_dt2 then
>     return v_dt;
>     else
>     return v_dt2;
>     end if;
>
>   END;
> $$ LANGUAGE 'plpgsql';
>
>
>