On Thu, 19 Aug 2021, David G. Johnston wrote:
> Yeah, you wrote two from clauses…
David,
Mea culpa! I did. Got that fixed.
Now, this query:
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Select distinct on (p.person_nbr) p.person_nbr,
c.contact_date, max(c.next_contact) as next_contac from contacts,
people as p, contacts as c
where c.next_contact <= current_date and
p.person_nbr = c.person_nbr
group by p.person_nbr, c.contact_date
order by p.person_nbr, c.contact_date desc;
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results in usable information; e.g.,
person_nbr | contact_date | next_contact
------------+--------------+-------------
1 | 2021-07-21 | 2021-07-26
4 | 2021-07-28 | 2021-08-16
6 | 2021-07-28 | 2021-08-16
9 | 2019-03-26 | 2020-11-17
11 | 2018-04-05 | 2020-11-17
13 | 2021-07-28 | 2021-08-16
My thanks to all of you,
Rich