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    SQL문제풀기

    [SQL문제풀기] 경기도에 위치한 식품창고 목록 출력하기

    silver's avatar
    silver
    Dec 13, 2024
    [SQL문제풀기] 경기도에 위치한 식품창고 목록 출력하기
     

    문제

    school.programmers.co.kr
    https://school.programmers.co.kr/learn/courses/30/lessons/131114
     

    내가 작성한 정답 - ORACLE

    SELECT WAREHOUSE_ID, WAREHOUSE_NAME, ADDRESS, NVL(FREEZER_YN,'N') AS FREEZER_YN FROM FOOD_WAREHOUSE WHERE ADDRESS LIKE '경기도%' ORDER BY WAREHOUSE_ID ASC;
     

    내가 작성한 정답 - MYSQL

    SELECT WAREHOUSE_ID, WAREHOUSE_NAME, ADDRESS, IFNULL(FREEZER_YN,'N') FREEZER_YN FROM FOOD_WAREHOUSE WHERE ADDRESS LIKE '경기도%' ORDER BY WAREHOUSE_ID ASC;
     
    💡
    DATABASE에서의 null 대체값 ORACLE - NVL(COLUMN, ‘ ‘)
    MYSQL - IFNULL(COLUMN, ‘ ‘)
    ORACLE,MYSQL - COALESCE(COLUMN, ’ ‘)
     
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