CODING 05
강원도에 위치한 생산공장 목록 출력하기
https://school.programmers.co.kr/learn/courses/30/lessons/131112
SELECT FACTORY_ID, FACTORY_NAME, ADDRESS
FROM FOOD_FACTORY
WHERE ADDRESS LIKE '%강원도%'
ORDER BY FACTORY_ID ASC
이름이 없는 동물의 아이디
https://school.programmers.co.kr/learn/courses/30/lessons/59039
SELECT ANIMAL_ID
FROM ANIMAL_INS
WHERE NAME IS NULL
ORDER BY ANIMAL_ID ASC
조건에 맞는 회원수 구하기
https://school.programmers.co.kr/learn/courses/30/lessons/131535
SELECT COUNT( USER_ID ) AS USERS
FROM USER_INFO
WHERE YEAR(JOINED) = '2021' AND AGE BETWEEN 20 AND 29 ;
SELECT COUNT(USER_ID) AS USERS
FROM USER_INFO
WHERE YEAR(JOINED) = 2021 AND AGE BETWEEN 20 AND 29 ;
SELECT COUNT(USER_ID) AS USERS
FROM USER_INFO
WHERE YEAR(JOINED) = 2021 AND (AGE BETWEEN 20 AND 29) ;
SELECT COUNT( USER_ID ) AS USERS
FROM USER_INFO
WHERE (JOINED BETWEEN '2021-01-01' AND '2021-12-31') AND (AGE BETWEEN 20 AND 29) ;