
230427_SQL
Authored by JIBEEN PARK
Computers
University
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7 questions
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1.
FILL IN THE BLANK QUESTION
3 mins • 5 pts
다음은 cleantopia 테이블의 일부이다.
부산광역시의 크린토피아 매장 중
수선이 가능한 지점을 찾아
매장명을 기준으로 내림차순 할 수 있도록
빈칸을 작성하시오.
(답안 작성시 따옴표와 함께 작성)
(단, services 컬럼의 문자열 내 따옴표는 무시한다)
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
다음 중 키가 177이상인 사람을 찾을 때 출력 결과가 다른 것은?
SELECT name_ FROM usertbl WHERE height >= ANY (SELECT height FROM usertbl WHERE height>=177);
SELECT name_ FROM usertbl WHERE height >= ALL (SELECT height FROM usertbl WHERE height<=177);
SELECT name_ FROM usertbl WHERE height>=177;
SELECT name_ FROM usertbl WHERE height >= SOME (SELECT height FROM usertbl WHERE height<=177);
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
집계 함수 중 함수명과 설명이 틀린 것은?
AVG() – 평균을 구한다.
MIN() – 최소값을 구한다.
STDEV() – 표준편차를 구한다.
VAR() – 분산을 구한다.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
테이블을 복사하는 쿼리문 CREATE TABLE … SELECT로 FK(외래키)가 적용된 테이블도 복사할 수 있다.
O
X
5.
DRAG AND DROP QUESTION
1 min • 5 pts
아래의 SQL 명령어를 실행 작동 순서에 맞게 정렬하시오.
FROM → (a) → (b) → (c) → (d) → (e)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
다음 중 보기와 같은 결과가 출력되는 SQL 쿼리문을 고르시오
SELECT * FROM sulbing LIMIT 3, 5;
SELECT * FROM sulbing LIMIT 5 OFFSET 3;
SELECT * FROM sulbing LIMIT 3 ONSET 5;
SELECT * FROM sulbing LIMIT 5 ONSET 3;
SELECT * FROM sulbing LIMIT 3 OFFSET 5;
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
그룹을 묶어주는 역할을 하는 절은?
GROUP BY
GROUP BYE
GOOD BYE👋🏻
HAVING
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