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Programmers Solution
- SQL
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‎Programmers/README.md‎

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| 28 | [아픈 동물 찾기](https://school.programmers.co.kr/learn/courses/30/lessons/59036) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EC%95%84%ED%94%88%EB%8F%99%EB%AC%BC%EC%B0%BE%EA%B8%B0.sql) | |
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| 29 | [잔챙이 잡은 수 구하기](https://school.programmers.co.kr/learn/courses/30/lessons/293258) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EC%9E%94%EC%B1%99%EC%9D%B4%EC%9E%A1%EC%9D%80%EC%88%98%EA%B5%AC%ED%95%98%EA%B8%B0.sql) | |
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| 30 | [강원도에 위치한 생산공장 목록 출력하기](https://school.programmers.co.kr/learn/courses/30/lessons/131112) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EA%B0%95%EC%9B%90%EB%8F%84%EC%97%90%EC%9C%84%EC%B9%98%ED%95%9C%EC%83%9D%EC%82%B0%EA%B3%B5%EC%9E%A5%EB%AA%A9%EB%A1%9D%EC%B6%9C%EB%A0%A5%ED%95%98%EA%B8%B0.sql) | |
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| 31 | [특정 형질을 가지는 대장균 찾기](https://school.programmers.co.kr/learn/courses/30/lessons/301646) | DATBASE | [SQL]() | |
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### LEVEL 2
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| Idx | Question | Category | Solution | Note |
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| 30 | [조건에 부합하는 중고거래 상태 조회하기](https://school.programmers.co.kr/learn/courses/30/lessons/164672) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EC%A1%B0%EA%B1%B4%EC%97%90%EB%B6%80%ED%95%A9%ED%95%98%EB%8A%94%EC%A4%91%EA%B3%A0%EA%B1%B0%EB%9E%98%EC%83%81%ED%83%9C%EC%A1%B0%ED%9A%8C%ED%95%98%EA%B8%B0.sql) | |
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| 31 | [가격대 별 상품 개수 구하기](https://school.programmers.co.kr/learn/courses/30/lessons/131530) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EA%B0%80%EA%B2%A9%EB%8C%80%EB%B3%84%EC%83%81%ED%92%88%EA%B0%9C%EC%88%98%EA%B5%AC%ED%95%98%EA%B8%B0.sql) | |
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| 32 | [진료과별 총 예약 횟수 출력하기](https://school.programmers.co.kr/learn/courses/30/lessons/132202) | DATBASE | [SQL](https://github.com/SubAkBa/Algorithm_Solution/blob/master/Programmers/Solutions/Solution_%EC%A7%84%EB%A3%8C%EA%B3%BC%EB%B3%84%EC%B4%9D%EC%98%88%EC%95%BD%ED%9A%9F%EC%88%98%EC%B6%9C%EB%A0%A5%ED%95%98%EA%B8%B0.sql) | |
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| 33 | [재구매가 일어난 상품과 회원 리스트 구하기](https://school.programmers.co.kr/learn/courses/30/lessons/131536) | DATBASE | [SQL]() | |
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| 34 | [부모의 형질을 모두 가지는 대장균 찾기](https://school.programmers.co.kr/learn/courses/30/lessons/301647) | DATBASE | [SQL]() | |
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| 35 | [업그레이드 된 아이템 구하기](https://school.programmers.co.kr/learn/courses/30/lessons/273711) | DATBASE | [SQL]() | |
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| 36 | [조건에 맞는 개발자 찾기](https://school.programmers.co.kr/learn/courses/30/lessons/276034) | DATBASE | [SQL]() | |
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### LEVEL 3
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| Idx | Question | Category | Solution | Note |

‎Programmers/Solutions/Solution_부모의형질을모두가지는대장균찾기.sql‎

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SELECT C.ID
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, C.GENOTYPE
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, P.GENOTYPE AS PARENT_GENOTYPE
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FROM ECOLI_DATA C
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JOIN ECOLI_DATA P ON C.PARENT_ID = P.ID
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WHERE (C.GENOTYPE & P.GENOTYPE) = P.GENOTYPE
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ORDER BY C.ID;

‎Programmers/Solutions/Solution_업그레이드된아이템구하기.sql‎

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SELECT I1.ITEM_ID
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, I1.ITEM_NAME
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, I1.RARITY
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FROM (
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SELECT I.ITEM_ID
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, I.ITEM_NAME
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, I.RARITY
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, T.PARENT_ITEM_ID
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FROM ITEM_INFO I
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JOIN ITEM_TREE T ON I.ITEM_ID = T.ITEM_ID
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) I1
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WHERE EXISTS (
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SELECT 1
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FROM ITEM_INFO I2
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WHERE I1.PARENT_ITEM_ID = I2.ITEM_ID
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AND I2.RARITY = 'RARE'
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)
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ORDER BY I1.ITEM_ID DESC;

‎Programmers/Solutions/Solution_재구매가일어난상품과회원리스트구하기.sql‎

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SELECT USER_ID
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, PRODUCT_ID
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FROM ONLINE_SALE
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GROUP BY USER_ID, PRODUCT_ID
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HAVING COUNT(*) > 1
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ORDER BY USER_ID, PRODUCT_ID DESC;

‎Programmers/Solutions/Solution_조건에맞는개발자찾기.sql‎

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SELECT D.ID
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, D.EMAIL
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, D.FIRST_NAME
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, D.LAST_NAME
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FROM DEVELOPERS D
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WHERE EXISTS (
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SELECT 1
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FROM SKILLCODES S
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WHERE (D.SKILL_CODE & S.CODE) = S.CODE
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AND S.NAME IN ('Python', 'C#')
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)
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ORDER BY D.ID;

‎Programmers/Solutions/Solution_특정형질을가지는대장균찾기.sql‎

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SELECT COUNT(*) AS COUNT
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FROM ECOLI_DATA E
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WHERE (GENOTYPE & 5) IN (1, 4, 5)
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AND (GENOTYPE & 2) != 2;

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