On 8/19/21 10:17 AM, Rich Shepard wrote:
> On Thu, 19 Aug 2021, Adrian Klaver wrote:
>
>> So take David Johnston's query:
>> Select distinct on (person_nbr) ….. order by person_nbr, contact_date
>> desc;
>
> Adrian,
>
> contact_date --------------
> 2021-08-17
> 2019-05-14
> 2019-05-15
> 2021-08-17
> 2018-04-05
> 2021-08-17
> 2018-04-05
> 2021-07-23
> 2019-04-01
> 2019-05-10
> 2019-03-15
> 2021-08-17
> 2019-04-16
> 2019-05-15
> 2021-08-17
> 2019-05-29
> 2021-08-17
> 2019-05-29
> 2021-07-23
> 2021-08-12
> ...
So is the above the result of the query above or the query I posted below?
Why is there no other information to provide context?
Is it doing what you want?
>
>> and add the next_contact filter:
>>
>> Select distinct on (person_nbr) * from contacts where next_contact <=
>> current_date order by person_nbr, contact_date desc;
>
> Select distinct on (p.person_nbr) * from c.contacts
> from people as p, contacts as c
> where cnext_contact <= current_date and
> p.person_nbr = c.person_nbr
> order by p.person_nbr, c.contact_date desc;
>
> $ psql -d bustrac -f test_query.sql
> psql:test_query.sql:5: ERROR: syntax error at or near "from"
> LINE 2: from people as p, contacts as c
> ^
>
> I still am missing quite a bit.
>
> Rich
>
>
>
--
Adrian Klaver
adrian.klaver@aklaver.com