implemented macro and final table

Author: TelRich

german_credit_data/macros/categorize.sql

@@ -0,0 +1,7 @@
+{% macro categorize_risk(credit_score) %}
+  CASE  
+    WHEN {{ credit_score }} >= 80 THEN 'Low Risk'
+    WHEN {{ credit_score }} >= 50 THEN 'Medium Risk'
+    ELSE 'High Risk'
+  END
+{% endmacro %}

german_credit_data/models/intermediate/int_customer_segmentation.sql

@@ -1,11 +1,7 @@
 WITH scored_data AS (
     SELECT
         *, 
-        CASE
-            WHEN credit_score >= 80 THEN 'Low Risk'
-            WHEN credit_score >= 50 THEN 'Medium Risk'
-            ELSE 'High Risk'
-        END AS risk_segment
+        {{ categorize_risk('credit_score') }} AS risk_segment
     FROM {{ ref('int_credit_scores') }}
 )
 

german_credit_data/models/marts/mart_final_credit_analysis.sql

@@ -0,0 +1,13 @@
+SELECT
+    credit_amount,
+    duration,
+    age,
+    gender,
+    housing,
+    job_category,
+    risk_segment,
+    credit_score,
+    age_group,
+    default_risk_percentage
+FROM {{ ref('int_default_risk') }}
+