Solvesql Solution

- SQL

Author: SubAkBa

Solvesql/Solutions/data-without-underscore.sql

@@ -0,0 +1,14 @@
+-- @ss.idx: 13
+-- @ss.level: 2
+-- @ss.title: 언더스코어(_)가 포함되지 않은 데이터 찾기
+-- @ss.slug: data-without-underscore
+-- @ss.category: String/Date
+-- @ss.note: 정규표현식 REGEXP 또는 INSTR 사용
+
+SELECT DISTINCT page_location
+FROM ga
+WHERE 1 = 1
+AND page_location NOT LIKE '%\_%'
+-- AND page_location NOT REGEXP '_'
+-- INSTR(page_location, '_') = 0
+ORDER BY page_location;

Solvesql/Solutions/film-ending-with-consonant.sql

@@ -0,0 +1,17 @@
+-- @ss.idx: 12
+-- @ss.level: 2
+-- @ss.title: 제목이 모음으로 끝나지 않는 영화
+-- @ss.slug: film-ending-with-consonant
+-- @ss.category: String/Date
+-- @ss.note: 정규표현식 REGEXP 또는 RIGHT 사용
+
+SELECT title
+FROM film
+WHERE rating IN ('R', 'NC-17')
+AND title NOT REGEXP '[AEIOU]$';
+-- AND RIGHT(title, 1) NOT IN ('A','E','I','O','U');
+-- AND title NOT LIKE '%A'
+-- AND title NOT LIKE '%E'
+-- AND title NOT LIKE '%I'
+-- AND title NOT LIKE '%O'
+-- AND title NOT LIKE '%U';

Solvesql/Solutions/max-row.sql

@@ -0,0 +1,15 @@
+-- @ss.idx: 15
+-- @ss.level: 2
+-- @ss.title: 최대값을 가진 행 찾기
+-- @ss.slug: max-row
+-- @ss.category: Subquery/CTE
+-- @ss.note:
+
+SELECT id
+FROM points
+WHERE x = (SELECT MAX(x) FROM points)
+UNION
+SELECT id
+FROM points
+WHERE y = (SELECT MAX(y) FROM points)
+ORDER BY id;

Solvesql/Solutions/publisher-with-many-games.sql

@@ -0,0 +1,12 @@
+-- @ss.idx: 14
+-- @ss.level: 2
+-- @ss.title: 게임을 10개 이상 발매한 게임 배급사 찾기
+-- @ss.slug: publisher-with-many-games
+-- @ss.category: Aggregate
+-- @ss.note:
+
+SELECT c.name
+FROM games g
+JOIN companies c ON g.publisher_id = c.company_id
+GROUP BY c.company_id
+HAVING COUNT(c.company_id) >= 10;