Re: Function syntax ?

thanks pavel...that worked! I like the simplicity of your first suggestion.

On Tue, Sep 9, 2008 at 11:05 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>wrote:

> 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(at)gmail(dot)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';
> >
> >
> >
>