Re: Query help

Chuck Martin
Avondale Software

On Sun, Jan 27, 2019 at 2:55 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:

> On 1/26/19 3:04 PM, Chuck Martin wrote:
> [snip]
> Outline form:
>
> 1) If a record is in ombcase it has a status('in a status') by definition.
>
> From query below you are not looking for just records in ombcase, but
> those that have a statusid other then 'closed%' in status table.
>
> 2) For the criteria in 1) you want to find the age of the last
> statuschange.
>
> To me that leads to something like:
>
> SELECT
> case_pkey
> FROM
> ombcase AS
> JOIN
> status
> ON
> ombcase.case_pkey = status.status_fkey
> LEFT JOIN
> statuschange
> ON -- Or statuschange.ombcase_fkey. Not clear from above.
> statuschange.case_fkey = ombcase.status_pkey
> GROUP BY
> ombcase.pkey
> HAVING
> status.LOWER(statusid) NOT LIKE ('closed%')
> AND
> max(coalesce(statuschange.insdatetime, ombcase.insdatetime))
> < 'some date'
>
> Obviously not tested.
>

Thanks, Adrian. This got me a lot closer, but I'm puzzled by the number of
records returned. There are 3120 ombcase records with a statusid that is <>
'closed%':

SELECT count(ombcase.case_pkey)

FROM ombcase,status

WHERE ombcase.status_fkey = status.status_pkey AND lower(status.statusid)
NOT LIKE ('closed%')

But 3378 are returned by:

SELECT ombcase.case_pkey, ombcase.casename,
COALESCE(AGE(statuschange.insdatetime), AGE(ombcase.insdatetime)) AS
age_in_status

FROM ombcase

INNER JOIN status

ON ombcase.status_fkey = status.status_pkey

LEFT JOIN statuschange

ON statuschange.case_fkey = ombcase.case_pkey

GROUP BY ombcase.case_pkey, status.statusid, statuschange.insdatetime,
ombcase.insdatetime

HAVING LOWER(status.statusid) NOT LIKE ('closed%')

AND ombcase.case_pkey <> 0

AND MAX(COALESCE(AGE(statuschange.insdatetime), AGE(ombcase.insdatetime)))
> '2 months'
ORDER BY age_in_status DESC

I don't know where the extra 258 records came from, and I think I need to
keep working on it until the query returns 3120 records.