고다혜: [SQL] Restaurant Growth_240107

Author: KodaHye

SQL/17주차/DH_Restaurant Growth.sql

@@ -0,0 +1,15 @@
+# AMOUNT OVER SUM TABLE
+WITH AOST AS (
+    SELECT
+        visited_on,
+        SUM(amount) OVER(ORDER BY visited_on RANGE BETWEEN INTERVAL 6 DAY PRECEDING AND CURRENT ROW) `amount`,
+        MIN(visited_on) OVER() min_date
+    FROM CUSTOMER
+)
+
+SELECT
+    DISTINCT(visited_on)
+           , amount
+           , round(amount / 7, 2) `average_amount`
+FROM AOST
+WHERE min_date + 6 <= visited_on