Solvesql Solution

- SQL

Author: SubAkBa

Solvesql/Solutions/inspection-needed-bike.sql

@@ -0,0 +1,13 @@
+-- @ss.idx: 8
+-- @ss.level: 2
+-- @ss.title: 점검이 필요한 자전거 찾기
+-- @ss.slug: inspection-needed-bike
+-- @ss.category: Aggregate
+-- @ss.note:
+
+SELECT bike_id
+FROM rental_history
+WHERE DATE_FORMAT(rent_at, '%Y-%m') = '2021-01'
+AND DATE_FORMAT(return_at, '%Y-%m') = '2021-01'
+GROUP BY bike_id
+HAVING SUM(distance) >= 50000;

Solvesql/Solutions/olist-daily-revenue.sql

@@ -0,0 +1,14 @@
+-- @ss.idx: 7
+-- @ss.level: 2
+-- @ss.title: 쇼핑몰의 일일 매출액
+-- @ss.slug: olist-daily-revenue
+-- @ss.category: JOIN/UNION
+-- @ss.note:
+
+SELECT DATE_FORMAT(o1.order_purchase_timestamp, '%Y-%m-%d') AS dt
+     , ROUND(SUM(o2.payment_value), 2) AS revenue_daily
+FROM olist_orders_dataset o1
+JOIN olist_order_payments_dataset o2 ON o1.order_id = o2.order_id
+WHERE o1.order_purchase_timestamp >= '2018-01-01 00:00:00'
+GROUP BY dt
+ORDER BY dt;

Solvesql/Solutions/shipment-in-bermuda.sql

@@ -0,0 +1,14 @@
+-- @ss.idx: 6
+-- @ss.level: 2
+-- @ss.title: 버뮤다 삼각지대에 들어가버린 택배
+-- @ss.slug: shipment-in-bermuda
+-- @ss.category: Aggregate
+-- @ss.note:
+
+SELECT DATE_FORMAT(order_delivered_carrier_date, '%Y-%m-%d') AS delivered_carrier_date
+     , COUNT(*) AS orders
+FROM olist_orders_dataset
+WHERE DATE_FORMAT(order_delivered_carrier_date, '%Y-%m') = '2017-01'
+AND order_delivered_customer_date IS NULL
+GROUP BY delivered_carrier_date
+ORDER BY delivered_carrier_date;