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[level 1] Title: 조건에 부합하는 중고거래 댓글 조회하기, Time: 0.00 ms, Memory: 0.0 MB -BaekjoonHub
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‎프로그래머스/1/164673. 조건에 부합하는 중고거래 댓글 조회하기/README.md‎

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# [level 1] 조건에 부합하는 중고거래 댓글 조회하기 - 164673
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[문제 링크](https://school.programmers.co.kr/learn/courses/30/lessons/164673)
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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 > SELECT
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### 채점결과
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Empty
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### 제출 일자
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2025년 12월 07일 21:27:32
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### 문제 설명
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<p>다음은 중고거래 게시판 정보를 담은 <code>USED_GOODS_BOARD</code> 테이블과 중고거래 게시판 첨부파일 정보를 담은 <code>USED_GOODS_REPLY</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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<p><code>USED_GOODS_REPLY</code> 테이블은 다음과 같으며 <code>REPLY_ID</code>, <code>BOARD_ID</code>, <code>WRITER_ID</code>, <code>CONTENTS</code>, <code>CREATED_DATE</code>는 각각 댓글 ID, 게시글 ID, 작성자 ID, 댓글 내용, 작성일을 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>REPLY_ID</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>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>CONTENTS</td>
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<td>VARCHAR(1000)</td>
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<td>TRUE</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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</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>와 <code>USED_GOODS_REPLY</code> 테이블에서 2022년 10월에 작성된 게시글 제목, 게시글 ID, 댓글 ID, 댓글 작성자 ID, 댓글 내용, 댓글 작성일을 조회하는 SQL문을 작성해주세요. 결과는 댓글 작성일을 기준으로 오름차순 정렬해주시고, 댓글 작성일이 같다면 게시글 제목을 기준으로 오름차순 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 같고</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>B0001</td>
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<td>kwag98</td>
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<td>반려견 배변패드 팝니다</td>
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<td>정말 저렴히 판매합니다. 전부 미개봉 새상품입니다.</td>
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<td>12000</td>
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<td>2022-10-01</td>
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<td>DONE</td>
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<td>250</td>
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</tr>
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<tr>
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<td>B0002</td>
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<td>lee871201</td>
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<td>국내산 볶음참깨</td>
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<td>직접 농사지은 참깨입니다.</td>
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<td>3000</td>
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<td>2022-10-02</td>
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<td>DONE</td>
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<td>121</td>
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</tr>
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<tr>
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<td>B0003</td>
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<td>goung12</td>
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<td>배드민턴 라켓</td>
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<td>사놓고 방치만 해서 팝니다.</td>
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<td>9000</td>
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<td>2022-10-02</td>
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<td>SALE</td>
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<td>212</td>
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</tr>
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<tr>
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<td>B0004</td>
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<td>keel1990</td>
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<td>디올 귀걸이</td>
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<td>신세계강남점에서 구입. 정품 아닐시 백퍼센트 환불</td>
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<td>130000</td>
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<td>2022-10-02</td>
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<td>SALE</td>
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<td>199</td>
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</tr>
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<tr>
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<td>B0005</td>
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<td>haphli01</td>
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<td>스팸클래식 팔아요</td>
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<td>유통기한 2025년까지에요</td>
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<td>10000</td>
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<td>2022-10-02</td>
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<td>SALE</td>
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<td>121</td>
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</tr>
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</tbody>
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</table>
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<p><code>USED_GOODS_REPLY</code> 테이블이 다음과 같을 때</p>
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<table class="table">
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<thead><tr>
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<th>REPLY_ID</th>
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<th>BOARD_ID</th>
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<th>WRITER_ID</th>
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<th>CONTENTS</th>
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<th>CREATED_DATE</th>
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</tr>
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</thead>
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<tbody><tr>
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<td>R000000001</td>
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<td>B0001</td>
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<td>s2s2123</td>
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<td>구매하겠습니다. 쪽지 드립니다.</td>
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<td>2022-10-02</td>
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</tr>
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<tr>
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<td>R000000002</td>
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<td>B0002</td>
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<td>hoho1112</td>
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<td>쪽지 주세요.</td>
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<td>2022-10-03</td>
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</tr>
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<tr>
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<td>R000000003</td>
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<td>B0006</td>
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<td>hwahwa2</td>
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<td>삽니다. 연락주세요.</td>
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<td>2022-10-03</td>
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</tr>
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<tr>
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<td>R000000004</td>
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<td>B0007</td>
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<td>hong02</td>
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<td>예약중</td>
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<td>2022-10-06</td>
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</tr>
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<tr>
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<td>R000000005</td>
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<td>B0009</td>
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<td>hanju23</td>
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<td>구매완료</td>
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<td>2022-10-07</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>TITLE</th>
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<th>BOARD_ID</th>
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<th>REPLY_ID</th>
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<th>WRITER_ID</th>
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<th>CONTENTS</th>
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<th>CREATED_DATE</th>
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</tr>
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</thead>
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<tbody><tr>
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<td>반려견 배변패드 팝니다</td>
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<td>B0001</td>
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<td>R000000001</td>
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<td>s2s2123</td>
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<td>구매하겠습니다. 쪽지 드립니다.</td>
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<td>2022-10-02</td>
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</tr>
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<tr>
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<td>국내산 볶음참깨</td>
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<td>B0002</td>
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<td>R000000002</td>
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<td>hoho1112</td>
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<td>쪽지 주세요.</td>
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<td>2022-10-03</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>주의사항</h5>
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<p><code>CREATED_DATE</code>의 포맷이 예시의 포맷과 일치해야 정답처리 됩니다.</p>
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> 출처: 프로그래머스 코딩 테스트 연습, https://school.programmers.co.kr/learn/challenges

‎프로그래머스/1/164673. 조건에 부합하는 중고거래 댓글 조회하기/조건에 부합하는 중고거래 댓글 조회하기.sql‎

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SELECT b.TITLE, b.BOARD_ID, r.REPLY_ID, r.WRITER_ID, r.CONTENTS, DATE_FORMAT(r.created_date, '%Y-%m-%d')
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FROM USED_GOODS_BOARD as b, USED_GOODS_REPLY as r
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WHERE b.BOARD_ID = r.BOARD_ID
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AND b.CREATED_DATE >= "2022-10-01" AND b.CREATED_DATE <= "2022-10-31"
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ORDER BY r.CREATED_DATE, b.TITLE

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