I believe in general you need
having c.next_contact = max(c.next_contact)
(at least in ANSI SQL) Use having for after the join has occured
Bryan Sayer
Retired Demographer/Statistician
In a world in which you can be anything, be kind
On 12/4/2025 2:55 PM, Rich Shepard 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?
TIA,
Rich
