feat(dim_organizations): adds ntd_id_2022 column

Author: V

warehouse/models/mart/transit_database/_mart_transit_database.yml

@@ -79,10 +79,14 @@ models:
         description: |
           The organization's ID in the National Transit Database / FTA agency ID number.
           Data entry processes / sources of truth for this field have changed over time.
-          As of May 2023, the source is the `raw_ntd_id` field in the Airtable `organizations` table;
+          As of May 2023, the source is the `raw_ntd_id` field in the Airtable `organizations` table
+          which is derived from 2021 ntd ids;
           for records before May 2023, sources were some combination of the `NTD agency info` table in
           Airtable and the `ntd_agency_to_organizations` CSV seed file in this dbt project (now
           renamed to `_deprecated__ntd_agency_to_organizations`).
+      - name: ntd_id_2022
+        description: |
+          Just pulls out the 5 digit component of the raw_ntd_id
       - name: name
         description: Organization name
       - name: organization_type

warehouse/models/mart/transit_database/dim_organizations.sql

@@ -32,9 +32,11 @@ dim_organizations AS (
             WHEN _valid_from >= '2023-05-23' THEN raw_ntd_id
             ELSE ntd_to_org.ntd_id
         END AS ntd_id,
+        IF(LENGTH(ntd_id) >= 10,
+            SUBSTR(ntd_id, -5),
+            ntd_id) AS ntd_id_2022,
         public_currently_operating,
         public_currently_operating_fixed_route,
-
         _is_current,
         _valid_from,
         _valid_to