V38 add latest value view

migrations/V38__add_latest_value_view_again.sql

@@ -0,0 +1,67 @@
+CREATE or REPLACE VIEW 
+  public.kpi_definition_with_latest_values as
+select
+  ckd.circle_kpidef_id,
+  ckd.circle_id,
+  kd.kpi_id,
+  kd.kpi_name,
+  kd.description,
+  kd.periodicity,
+  kd.value_min,
+  kd.value_max,
+  kd.unit,
+  kd.created_at as kpi_created_at,
+  kd.updated_at as kpi_updated_at,
+  kd.active,
+  kd.is_approved,
+  t1.latest_value,
+  t1.latest_user_id,
+  t1.latest_standardized_date,
+  kd.formula,
+  t1.cumulative_value,
+  c.circle_name,
+  t.target_id,
+  t.target_value,
+  t1.target_fulfilled,
+  previous_value,
+  case when t1.latest_value > 0 and previous_value > 0 then ((t1.latest_value-previous_value)/previous_value)*100
+  when previous_value = 0 then 'NaN'
+  else null end as percentage_change
+from
+  circle_kpi_definition ckd
+  join kpi_definition kd
+  on ckd.kpi_id = kd.kpi_id
+  left join circle c
+  on ckd.circle_id = c.circle_id
+  left join target t
+  on ckd.kpi_id = t.kpi_id and ckd.circle_id = t.circle_id
+  left join (
+    select *
+    from
+    (
+    select
+      kpi_id,
+      circle_id,
+      standardized_date as latest_standardized_date,
+      value as latest_value,
+      user_id as latest_user_id,
+      cumulative_value,
+      target_fulfilled,
+      rank() over(partition by kpi_id, circle_id order by standardized_date desc, created_at desc) as rank
+    from
+      kpi_values_period_standardized) sq
+      where rank = 1) t1
+  on ckd.kpi_id = t1.kpi_id and ckd.circle_id = t1.circle_id
+  LEFT JOIN (
+    SELECT kpi_id, circle_id, value as previous_value from(
+      SELECT kpi_id, circle_id, rank () over (
+      partition by kpi_id, circle_id
+      order by standardized_date desc) as rank, standardized_date, value
+      FROM kpi_values_period_standardized
+    ) as ranked
+      WHERE rank = 2
+  ) as previous_period
+  ON t1.kpi_id = previous_period.kpi_id and t1.circle_id = previous_period.circle_id
+order by
+kpi_id,
+ckd.circle_kpidef_id;