Fix missing job_changes (position id not unique, no initial job_change

for first position) and fix duplicate workers (department fall-back
joining didn't consider duplicate naming of multiple levels)

transform/models/tap_spreadsheets_anywhere/job_change.sql

@@ -17,12 +17,7 @@ latest_departments AS (
     FROM {{ ref('department') }}
 ),
 
-positions_deduped AS (
-    SELECT DISTINCT ON (position_id) *
-    FROM {{ source('tap_spreadsheets_anywhere', 'positions') }}
-    WHERE _sdc_deleted_at IS NULL
-    ORDER BY position_id, _sdc_received_at DESC
-),
+-- note: Positions ID is not unique, hence removed the deduplication logic
 
 transformed_worker AS (
     SELECT worker_hris_id, id
@@ -41,12 +36,12 @@ position_details AS (
         p.assigned_employee_effective_date::DATE AS new_job_effective_date,
         p.fte_utilized_by_employee_in_this_position * 100 AS new_fte_percentage,
 		tw.id as worker_id
-    FROM positions_deduped p
-    LEFT JOIN latest_workers w
-        ON p.assigned_employee_id = w.user_id
+    FROM transformed_worker tw
+    LEFT JOIN {{ source('tap_spreadsheets_anywhere', 'positions') }} p
+        ON p.assigned_employee_id = tw.worker_hris_id
     LEFT JOIN latest_departments d
         ON p.assigned_unit_id = d.department_hris_id
-	LEFT JOIN transformed_worker tw ON tw.worker_hris_id = w.user_id
+	LEFT JOIN latest_workers w ON tw.worker_hris_id = w.user_id
 ),
 
 job_changes_with_history AS (

transform/models/tap_spreadsheets_anywhere/worker.sql

@@ -79,7 +79,7 @@ joined_data AS (
     LEFT JOIN {{ ref('department') }} d -- Source = Department from Positions report, only relevant for active workers
         ON p.assigned_unit_id = d.department_hris_id
     LEFT JOIN {{ ref('department') }} d2 -- Source = Business Unit from All Users report, only relevant for inactive workers
-        ON w.business_unit = d2.name
+        ON w.business_unit = d2.name AND nlevel(d2.path) = 3
 )
 
 SELECT