Re: Select subset of rows

On Sun, 27 Aug 2000, Stephan Szabo wrote:

>
> Of course immediately after sending the last message and logging off my
> ISP I figured out the simpler way for the third one:
>
> begin;
> select salary into temp saltemp from employee order by salary desc
> limit 5;
> select name from employee where exists (select * from saltemp where
> saltemp.salary=employee.salary);
> end;
>
> Stephan Szabo
> sszabo(at)bigpanda(dot)com
>

I wonder if the following might be a bit faster? Or would it be slower?

select salary into temp saltemp from employee order by salary desc
limit 5;

select min(salary) as minsal into test minsal from saltemp;

select name, salary from employee, minsal
where salary >= minsal;

I don't know the speed difference between my second select and your
subselect within an EXISTS clause might be.

Just a thought,
John