Re: Extract only maximum date from column

On Thu, Dec 4, 2025 at 2:55 PM Rich Shepard <rshepard(at)appl-ecosys(dot)com>
wrote:

> I want the script to extract only the maximum `next_contact' date and
> haven't learned how to do this from my reading of web sites.
>
> The script:
>
> select p.person_nbr, p.company_nbr, c.next_contact
> from people as p, contacts as c
> where c.next_contact >= '2025-11-01'
> group by p.person_nbr, p.company_nbr, c.next_contact
> order by p.person_nbr, p.company_nbr, max(c.next_contact);
>
> returns all contacts rather than only the latest one.
>
> Is using a sub-select the proper way?
>

May not be the only way, but it's how I do it:
SELECT *
FROM foo
WHERE some_dt = (SELECT MAX(some_dt) FROM foo);

It might return more than one row...

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