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[level 2] Title: 조건에 부합하는 중고거래 상태 조회하기, Time: 0.00 ms, Memory: 0.0 MB -BaekjoonHub
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‎프로그래머스/2/164672. 조건에 부합하는 중고거래 상태 조회하기/README.md‎

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# [level 2] 조건에 부합하는 중고거래 상태 조회하기 - 164672
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[문제 링크](https://school.programmers.co.kr/learn/courses/30/lessons/164672)
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### 성능 요약
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메모리: 0.0 MB, 시간: 0.00 ms
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### 구분
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코딩테스트 연습 > String， Date
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### 채점결과
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Empty
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### 제출 일자
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2026년 01월 06일 13:38:48
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### 문제 설명
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<p>다음은 중고거래 게시판 정보를 담은 <code>USED_GOODS_BOARD</code> 테이블입니다. <code>USED_GOODS_BOARD</code> 테이블은 다음과 같으며 <code>BOARD_ID</code>, <code>WRITER_ID</code>, <code>TITLE</code>, <code>CONTENTS</code>, <code>PRICE</code>, <code>CREATED_DATE</code>, <code>STATUS</code>, <code>VIEWS</code>은 게시글 ID, 작성자 ID, 게시글 제목, 게시글 내용, 가격, 작성일, 거래상태, 조회수를 의미합니다.</p>
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<table class="table">
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<thead><tr>
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<th>Column name</th>
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<th>Type</th>
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<th>Nullable</th>
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</tr>
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</thead>
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<tbody><tr>
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<td>BOARD_ID</td>
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<td>VARCHAR(5)</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>WRITER_ID</td>
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<td>VARCHAR(50)</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>TITLE</td>
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<td>VARCHAR(100)</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>CONTENTS</td>
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<td>VARCHAR(1000)</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>PRICE</td>
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<td>NUMBER</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>CREATED_DATE</td>
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<td>DATE</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>STATUS</td>
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<td>VARCHAR(10)</td>
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<td>FALSE</td>
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</tr>
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<tr>
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<td>VIEWS</td>
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<td>NUMBER</td>
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<td>FALSE</td>
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</tr>
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</tbody>
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</table>
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<hr>
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<h5>문제</h5>
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<p><code>USED_GOODS_BOARD</code> 테이블에서 2022년 10월 5일에 등록된 중고거래 게시물의 게시글 ID, 작성자 ID, 게시글 제목, 가격, 거래상태를 조회하는 SQL문을 작성해주세요. 거래상태가 SALE 이면 판매중, RESERVED이면 예약중, DONE이면 거래완료 분류하여 출력해주시고, 결과는 게시글 ID를 기준으로 내림차순 정렬해주세요.</p>
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<hr>
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<h5>예시</h5>
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<p><code>USED_GOODS_BOARD</code> 테이블이 다음과 같을 때</p>
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<table class="table">
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<thead><tr>
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<th>BOARD_ID</th>
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<th>WRITER_ID</th>
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<th>TITLE</th>
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<th>CONTENTS</th>
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<th>PRICE</th>
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<th>CREATED_DATE</th>
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<th>STATUS</th>
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<th>VIEWS</th>
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</tr>
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</thead>
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<tbody><tr>
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<td>B0007</td>
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<td>s2s2123</td>
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<td>커피글라인더</td>
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<td>새상품처럼 깨끗합니다.</td>
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<td>7000</td>
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<td>2022-10-04</td>
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<td>DONE</td>
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<td>210</td>
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</tr>
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<tr>
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<td>B0008</td>
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<td>hong02</td>
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<td>자전거 판매합니다</td>
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<td>출퇴근용으로 구매했다가 사용하지 않아서 내놔요</td>
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<td>40000</td>
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<td>2022-10-04</td>
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<td>SALE</td>
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<td>301</td>
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</tr>
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<tr>
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<td>B0009</td>
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<td>yawoong67</td>
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<td>선반 팝니다</td>
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<td>6단 선반. 환불 반품 안됩니다.</td>
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<td>12000</td>
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<td>2022-10-05</td>
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<td>DONE</td>
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<td>202</td>
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</tr>
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<tr>
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<td>B0010</td>
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<td>keel1990</td>
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<td>철제선반5단</td>
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<td>철제선반 5단 조립식 팜</td>
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<td>10000</td>
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<td>2022-10-05</td>
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<td>SALE</td>
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<td>194</td>
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</tr>
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</tbody>
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</table>
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<p>SQL을 실행하면 다음과 같이 출력되어야 합니다.</p>
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<table class="table">
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<thead><tr>
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<th>BOARD_ID</th>
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<th>WRITER_ID</th>
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<th>TITLE</th>
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<th>PRICE</th>
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<th>STATUS</th>
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</tr>
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</thead>
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<tbody><tr>
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<td>B0010</td>
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<td>keel1990</td>
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<td>철제선반5단</td>
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<td>10000</td>
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<td>판매중</td>
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</tr>
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<tr>
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<td>B0009</td>
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<td>yawoong67</td>
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<td>선반 팝니다</td>
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<td>12000</td>
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<td>거래완료</td>
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</tr>
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</tbody>
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</table>
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> 출처: 프로그래머스 코딩 테스트 연습, https://school.programmers.co.kr/learn/challenges

‎프로그래머스/2/164672. 조건에 부합하는 중고거래 상태 조회하기/조건에 부합하는 중고거래 상태 조회하기.sql‎

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SELECT BOARD_ID, WRITER_ID, TITLE, PRICE,
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CASE
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WHEN STATUS = 'SALE' THEN '판매중'
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WHEN STATUS = 'RESERVED' THEN '예약중'
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ELSE '거래완료'
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END AS STATUS
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FROM USED_GOODS_BOARD
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WHERE CREATED_DATE = '2022-10-05'
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ORDER BY BOARD_ID DESC

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