Introduce new quarterly model

Author: marielestavel

dbt-models/models/food_bank_report/food_bank_report.yml

@@ -47,6 +47,11 @@ models:
  Quarterly report on the distribution of the number of family members
  among the unique number of families visiting over the period.
 
+ - name: viz_food_bank_report__supply_sources__quarterly
+ description: >
+ Quarterly report including stock metrics related to product entries 
+ from the various supply sources.
+
 exposures:
  - name: food-bank-report
  description: >-

dbt-models/models/food_bank_report/quarterly_report/viz_food_bank_report__supply_sources__quarterly.sql

@@ -0,0 +1,66 @@
+with supply_source as (
+
+ select * from {{ ref('viz_operations__stock_entries_sources') }}
+
+),
+
+visit_events as (
+ 
+ select * from {{ ref('stg_families__visit_events') }}
+
+),
+
+quarters_calendar as (
+
+ select
+ date_trunc('quarter', visit_date)::date as quarter_at
+ from visit_events
+ group by 1
+ 
+),
+
+distinct_supply_source as (
+
+ select
+ source_name
+ from supply_source
+ group by 1
+
+),
+
+quarter_sources_cross_join as (
+
+ select
+ quarters_calendar.quarter_at,
+ distinct_supply_source.source_name
+ from quarters_calendar
+ cross join distinct_supply_source
+
+),
+
+supply_sources_aggregate as (
+
+ select
+ date_trunc('quarter', date_at)::date as quarter_at,
+ source_name,
+ sum(batch_quantity) as batch_quantity,
+ sum(monetary_value_eur) as monetary_value_eur
+ from supply_source
+ group by 1,2
+
+),
+
+final as (
+
+ select
+ quarter_sources_cross_join.quarter_at,
+ quarter_sources_cross_join.source_name,
+ coalesce(supply_sources_aggregate.batch_quantity, 0::numeric) as batch_quantity,
+ coalesce(supply_sources_aggregate.monetary_value_eur, 0) as monetary_value_eur
+ from quarter_sources_cross_join
+ left join supply_sources_aggregate
+ on quarter_sources_cross_join.quarter_at = supply_sources_aggregate.quarter_at
+
+)
+
+select * from final

dbt-models/models/schema.yml

@@ -128,7 +128,7 @@ models:
  columns:
  - name: date_at
  description: The date when the operation occurred
- - name: source
+ - name: source_name
  description: > 
  The acquisition channel for this operation.
  Either 'Pleins Courses', 'Collectes Supermarché' or 'Enlèvements BAPIF'