Re: Function syntax ?

When i tried that, i got the following error:

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 $$

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';

ERROR: syntax error at or near "v_dt" at character 1
QUERY: v_dt := $1
CONTEXT: SQL statement in PL/PgSQL function "fcn_max_dt" near line 3

********** Error **********

ERROR: syntax error at or near "v_dt"
SQL state: 42601
Context: SQL statement in PL/PgSQL function "fcn_max_dt" near line 3

On Tue, Sep 9, 2008 at 11:07 AM, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>wrote:

> On Tue, Sep 9, 2008 at 11:55 AM, Ruben Gouveia <rubes7202(at)gmail(dot)com>
> wrote:
> > 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';
>
> It certainly works, but there's no real need for the declarations.
> This works just as well:
>
> 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 $$
>
> BEGIN
> if p_dt >= p_dt2 then
> return p_dt;
> else
> return p_dt2;
> end if;
>
> END;
> $$ LANGUAGE 'plpgsql';
>