solvesql/난이도 3: 쇼핑몰의 일일 매출액과 ARPPU (#52)

src/solvesql/level3/PROB05.sql

@@ -0,0 +1,17 @@
+SELECT
+    DATE(D.order_purchase_timestamp) AS 'dt',
+    COUNT(DISTINCT D.order_id) AS 'pu',
+    SUM(O.payment_value) AS 'revenue_daily',
+    ROUND(
+                SUM(O.payment_value) / COUNT(DISTINCT D.order_id),
+                2
+        ) AS 'arppu'
+FROM
+    olist_orders_dataset AS D
+        JOIN olist_order_payments_dataset AS O ON D.order_id = O.order_id
+WHERE
+        DATE(D.order_purchase_timestamp) >= '2018-01-01'
+GROUP BY
+    DATE(D.order_purchase_timestamp)
+ORDER BY
+    DATE(D.order_purchase_timestamp)