task 9

Author: devtraining84

task9.sql

@@ -0,0 +1,57 @@
+use financial16_25;
+
+WITH cte AS (
+    SELECT
+        d2.district_id,
+
+        count(distinct c.client_id) as customer_amount,
+        sum(l.amount) as loans_given_amount,
+        count(l.amount) as loans_given_count
+    FROM
+            loan as l
+        INNER JOIN
+            account a using (account_id)
+        INNER JOIN
+            disp as d using (account_id)
+        INNER JOIN
+            client as c using (client_id)
+        INNER JOIN
+            district as d2 on
+                c.district_id = d2.district_id
+    WHERE True
+        AND l.status IN ('A', 'C')
+        AND d.type = 'OWNER'
+    GROUP BY d2.district_id
+    ;
+)
+SELECT *
+FROM cte
+
+
+WITH cte AS (
+    SELECT d2.district_id,
+
+           count(distinct c.client_id) as customer_amount,
+           sum(l.amount)               as loans_given_amount,
+           count(l.amount)             as loans_given_count
+    FROM
+            loan as l
+        INNER JOIN
+            account a using (account_id)
+        INNER JOIN
+            disp as d using (account_id)
+        INNER JOIN
+            client as c using (client_id)
+        INNER JOIN
+           district as d2 on
+                c.district_id = d2.district_id
+    WHERE True
+      AND l.status IN ('A', 'C')
+      AND d.type = 'OWNER'
+    GROUP BY d2.district_id
+)
+SELECT
+    *,
+    loans_given_amount / SUM(loans_given_amount) OVER () AS share
+FROM cte
+ORDER BY share DESC