Solvesql Solution

- SQL

Author: SubAkBa

Solvesql/Solutions/find-movies-by-korean-artists.sql

@@ -0,0 +1,14 @@
+-- @ss.idx: 22
+-- @ss.level: 2
+-- @ss.title: 한국 감독의 영화 찾기
+-- @ss.slug: find-movies-by-korean-artists
+-- @ss.category: JOIN/UNION
+-- @ss.note:
+
+SELECT at.name as artist
+     , a.title
+FROM artworks a
+JOIN artworks_artists aa ON a.artwork_id = aa.artwork_id
+JOIN artists at ON aa.artist_id = at.artist_id
+WHERE at.nationality = 'Korean'
+AND a.classification LIKE 'Film%';

Solvesql/Solutions/revenue-weekday-weekend.sql

@@ -0,0 +1,12 @@
+-- @ss.idx: 20
+-- @ss.level: 2
+-- @ss.title: 레스토랑의 주중, 주말 매출액 비교하기
+-- @ss.slug: revenue-weekday-weekend
+-- @ss.category: CASE/IF
+-- @ss.note:
+
+SELECT IF(day IN ('Sat', 'Sun'), 'weekend', 'weekday') AS 'week'
+     , SUM(total_bill) AS 'sales'
+FROM tips
+GROUP BY week
+ORDER BY sales DESC;

Solvesql/Solutions/top-revenue-actors.sql

@@ -0,0 +1,22 @@
+-- @ss.idx: 21
+-- @ss.level: 2
+-- @ss.title: 매출이 높은 배우 찾기
+-- @ss.slug: top-revenue-actors
+-- @ss.category: JOIN/UNION
+-- @ss.note:
+
+SELECT a.first_name
+     , a.last_name
+     , temp.total_revenue
+FROM actor a
+JOIN (
+    SELECT fa.actor_id
+         , SUM(p.amount) as total_revenue
+    FROM film_actor fa
+    JOIN inventory i ON i.film_id = fa.film_id
+    JOIN rental r ON r.inventory_id = i.inventory_id
+    JOIN payment p ON p.rental_id = r.rental_id
+    GROUP BY fa.actor_id
+) AS temp ON a.actor_id = temp.actor_id
+ORDER BY temp.total_revenue DESC
+LIMIT 5;

Solvesql/Solutions/yearly-shipping-usage.sql

@@ -0,0 +1,15 @@
+-- @ss.idx: 23
+-- @ss.level: 2
+-- @ss.title: 연도별 배송 업체 이용 내역 분석하기
+-- @ss.slug: yearly-shipping-usage
+-- @ss.category: CASE/IF
+-- @ss.note:
+
+SELECT YEAR(purchased_at) AS 'year'
+     , SUM(shipping_method = 'Standard') + SUM(is_returned) AS 'standard'
+     , SUM(shipping_method = 'Express') AS 'express'
+     , SUM(shipping_method = 'Overnight') AS 'overnight'
+FROM transactions
+WHERE is_online_order = 1
+GROUP BY YEAR(purchased_at)
+ORDER BY year;