Correctly join calculated number of parcels per sale to sales view

[wrridgeway]

Joining calculated number of sales currently uses an adjusted document number against an un-adjusted document number.

[wrridgeway]

Reviewing the data sent by Bill, it seems some sales were getting filtered out during ingest by the sale.num_parcels_sale <= 2 condition in our SQL pull. This was because some sales had NULL values for num_parcels_sold due to a bad join condition.

select
    new.pin,
    new.sale_date,
    new.doc_no,
    new.num_parcels_sale as new,
    old.num_parcels_sale as old
from "z_ci_333-correctly-join-calculated-number-of-parcels-per-sale-to-sales-view_default".vw_pin_sale new
left join default.vw_pin_sale old
    on new.pin = old.pin
    and new.doc_no = old.doc_no
where new.pin = '14313050581003'

pin	sale_date	doc_no	new	old
14313050581003	5/26/2016	1620350014	1	1
14313050581003	6/5/2018	1816206243	1	1
14313050581003	5/17/2021	2121008004	1

[wrridgeway]

Count of number of sales with <= 2 for number of parcels per sale now vs NULL previously:

select
    new.year,
    count(*) as "new sales"
from "z_ci_333-correctly-join-calculated-number-of-parcels-per-sale-to-sales-view_default".vw_pin_sale new
left join default.vw_pin_sale old
    on new.doc_no = old.doc_no and new.pin = old.pin
where new.num_parcels_sale <= 2 and old.num_parcels_sale IS NULL
group by new.year
order by new.year desc

year	new sales
2023	8745
2022	9545
2021	15162
2020	5909
2019	87
2018	33
2017	19
2016	15
2015	21
2014	12
2013	8
2012	11
2011	2
2010	2
2008	2
2007	1
2006	2
2004	1
2003	1
2002	2
2001	1
2000	1