{"componentChunkName":"component---src-templates-blog-post-js","path":"/algorithm/programmers/sql/groupby/4/","result":{"data":{"site":{"siteMetadata":{"title":"아구몬","author":"[AGUMON]","siteUrl":"https://ljlm0402.netlify.com","comment":{"disqusShortName":"","utterances":"ljlm0402/tech-blog"},"sponsor":{"buyMeACoffeeId":""}}},"markdownRemark":{"id":"b0d7d520-90da-5aad-91f9-0f6800b637a5","excerpt":"💎 목차 문제 설명 (Problem) 입출력 예 (Example) 문제 풀이 (Solution) 📕 문제 설명  테이블은 동물 보호소에서 입양 보낸 동물의 정보를 담은 테이블입니다.  테이블 구조는 다음과 같으며, , , , , 는 각각 동물의 아이디, 생물 종, 입양일, 이름, 성별 및 중성화 여부를 나타냅니다. \n 보호소에서는 몇 시에 입양이 가장 활발하게 일어나는지 알아보려 합니다. 0시부터 23시까지, 각 시간대별로 입양이 몇 건이나 발생했는지 조회하는 SQL…","html":"<p><span\n      class=\"gatsby-resp-image-wrapper\"\n      style=\"position: relative; display: block; margin-left: auto; margin-right: auto; max-width: 590px; \"\n    >\n      <span\n    class=\"gatsby-resp-image-background-image\"\n    style=\"padding-bottom: 75.67567567567568%; position: relative; bottom: 0; left: 0; background-image: url('data:image/png;base64,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'); background-size: cover; display: block;\"\n  ></span>\n  <img\n        class=\"gatsby-resp-image-image\"\n        alt=\"logo\"\n        title=\"logo\"\n        src=\"/static/f3650979803bf578b67ebdbb858b7e40/fcda8/logo.png\"\n        srcset=\"/static/f3650979803bf578b67ebdbb858b7e40/12f09/logo.png 148w,\n/static/f3650979803bf578b67ebdbb858b7e40/e4a3f/logo.png 295w,\n/static/f3650979803bf578b67ebdbb858b7e40/fcda8/logo.png 590w,\n/static/f3650979803bf578b67ebdbb858b7e40/e185b/logo.png 691w\"\n        sizes=\"(max-width: 590px) 100vw, 590px\"\n        style=\"width:100%;height:100%;margin:0;vertical-align:middle;position:absolute;top:0;left:0;\"\n        loading=\"lazy\"\n      />\n    </span></p>\n<center><strong style=\"color:#FDE2BF; font-size: 20px;\">프로그래머스</strong>에서 주최하는 SQL 문제 풀이</center>\n<br />\n<h2 id=\"-목차\" style=\"position:relative;\"><a href=\"#-%EB%AA%A9%EC%B0%A8\" aria-label=\" 목차 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a><strong>💎 목차</strong></h2>\n<ul>\n<li><a href=\"#-%EB%AC%B8%EC%A0%9C-%EC%84%A4%EB%AA%85\">문제 설명 (Problem)</a></li>\n<li><a href=\"#-%EC%9E%85%EC%B6%9C%EB%A0%A5-%EC%98%88\">입출력 예 (Example)</a></li>\n<li><a href=\"#-%EB%AC%B8%EC%A0%9C-%ED%92%80%EC%9D%B4\">문제 풀이 (Solution)</a></li>\n</ul>\n<h2 id=\"-문제-설명\" style=\"position:relative;\"><a href=\"#-%EB%AC%B8%EC%A0%9C-%EC%84%A4%EB%AA%85\" aria-label=\" 문제 설명 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a><strong>📕 문제 설명</strong></h2>\n<ul>\n<li><code class=\"language-text\">ANIMAL_OUTS</code> 테이블은 동물 보호소에서 입양 보낸 동물의 정보를 담은 테이블입니다.</li>\n<li><code class=\"language-text\">ANIMAL_OUTS</code> 테이블 구조는 다음과 같으며,</li>\n<li><code class=\"language-text\">ANIMAL_ID</code>, <code class=\"language-text\">ANIMAL_TYPE</code>, <code class=\"language-text\">DATETIME</code>, <code class=\"language-text\">NAME</code>, <code class=\"language-text\">SEX_UPON_INTAKE</code>는</li>\n<li>각각 동물의 아이디, 생물 종, 입양일, 이름, 성별 및 중성화 여부를 나타냅니다.</li>\n</ul>\n<br />\n<p><span\n      class=\"gatsby-resp-image-wrapper\"\n      style=\"position: relative; display: block; margin-left: auto; margin-right: auto; max-width: 413px; \"\n    >\n      <span\n    class=\"gatsby-resp-image-background-image\"\n    style=\"padding-bottom: 50.67567567567568%; position: relative; bottom: 0; left: 0; background-image: url('data:image/png;base64,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'); background-size: cover; display: block;\"\n  ></span>\n  <img\n        class=\"gatsby-resp-image-image\"\n        alt=\"table 2\"\n        title=\"table 2\"\n        src=\"/static/5068585a2ac900a60c0c97e9f92913e2/6c1e7/table.2.png\"\n        srcset=\"/static/5068585a2ac900a60c0c97e9f92913e2/12f09/table.2.png 148w,\n/static/5068585a2ac900a60c0c97e9f92913e2/e4a3f/table.2.png 295w,\n/static/5068585a2ac900a60c0c97e9f92913e2/6c1e7/table.2.png 413w\"\n        sizes=\"(max-width: 413px) 100vw, 413px\"\n        style=\"width:100%;height:100%;margin:0;vertical-align:middle;position:absolute;top:0;left:0;\"\n        loading=\"lazy\"\n      />\n    </span>\n<br /></p>\n<ul>\n<li>보호소에서는 몇 시에 입양이 가장 활발하게 일어나는지 알아보려 합니다.</li>\n<li>0시부터 23시까지, 각 시간대별로 입양이 몇 건이나 발생했는지 조회하는 SQL문을 작성해주세요.</li>\n<li>이때 결과는 시간대 순으로 정렬해야 합니다.</li>\n</ul>\n<br />\n<p><strong><a href=\"#-%EB%AA%A9%EC%B0%A8\">⬆ 목차</a></strong></p>\n<hr />\n<h2 id=\"-입출력-예\" style=\"position:relative;\"><a href=\"#-%EC%9E%85%EC%B6%9C%EB%A0%A5-%EC%98%88\" aria-label=\" 입출력 예 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a><strong>📙 입출력 예</strong></h2>\n<p>SQL문을 실행하면 다음과 같이 출력되어야 합니다.</p>\n<p><span\n      class=\"gatsby-resp-image-wrapper\"\n      style=\"position: relative; display: block; margin-left: auto; margin-right: auto; max-width: 156px; \"\n    >\n      <span\n    class=\"gatsby-resp-image-background-image\"\n    style=\"padding-bottom: 551.3513513513514%; position: relative; bottom: 0; left: 0; background-image: url('data:image/png;base64,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'); background-size: cover; display: block;\"\n  ></span>\n  <img\n        class=\"gatsby-resp-image-image\"\n        alt=\"4 example\"\n        title=\"4 example\"\n        src=\"/static/9f4ca35fd9db05ee53b243716704e6f5/680fe/4.example.png\"\n        srcset=\"/static/9f4ca35fd9db05ee53b243716704e6f5/12f09/4.example.png 148w,\n/static/9f4ca35fd9db05ee53b243716704e6f5/680fe/4.example.png 156w\"\n        sizes=\"(max-width: 156px) 100vw, 156px\"\n        style=\"width:100%;height:100%;margin:0;vertical-align:middle;position:absolute;top:0;left:0;\"\n        loading=\"lazy\"\n      />\n    </span>\n<br /></p>\n<br />\n<p><strong><a href=\"#-%EB%AA%A9%EC%B0%A8\">⬆ 목차</a></strong></p>\n<hr />\n<h2 id=\"-문제-풀이\" style=\"position:relative;\"><a href=\"#-%EB%AC%B8%EC%A0%9C-%ED%92%80%EC%9D%B4\" aria-label=\" 문제 풀이 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a><strong>📘 문제 풀이</strong></h2>\n<div class=\"gatsby-highlight\" data-language=\"js\"><pre class=\"language-js\"><code class=\"language-js\"><span class=\"token constant\">SET</span> @hour <span class=\"token operator\">=</span> <span class=\"token operator\">-</span><span class=\"token number\">1</span><span class=\"token punctuation\">;</span>\n<span class=\"token constant\">SELECT</span>\n        <span class=\"token punctuation\">(</span>@hour <span class=\"token operator\">:</span><span class=\"token operator\">=</span> @hour <span class=\"token operator\">+</span> <span class=\"token number\">1</span><span class=\"token punctuation\">)</span> <span class=\"token constant\">AS</span> <span class=\"token string\">'HOUR'</span><span class=\"token punctuation\">,</span>\n        <span class=\"token punctuation\">(</span>\n            <span class=\"token constant\">SELECT</span> <span class=\"token constant\">COUNT</span><span class=\"token punctuation\">(</span><span class=\"token string\">'*'</span><span class=\"token punctuation\">)</span>\n            <span class=\"token constant\">FROM</span> <span class=\"token string\">'ANIMAL_OUTS'</span>\n            <span class=\"token constant\">WHERE</span> <span class=\"token constant\">HOUR</span><span class=\"token punctuation\">(</span><span class=\"token string\">'DATETIME'</span><span class=\"token punctuation\">)</span> <span class=\"token operator\">=</span> @hour\n        <span class=\"token punctuation\">)</span> <span class=\"token constant\">AS</span> <span class=\"token string\">'COUNT'</span>\n<span class=\"token constant\">FROM</span> <span class=\"token string\">'ANIMAL_OUTS'</span>\n<span class=\"token constant\">WHERE</span> @hour <span class=\"token operator\">&lt;</span> <span class=\"token number\">23</span>\n<span class=\"token constant\">ORDER</span> <span class=\"token constant\">BY</span> <span class=\"token string\">'HOUR'</span> <span class=\"token constant\">ASC</span></code></pre></div>\n<br />\n<p><strong><a href=\"#-%EB%AA%A9%EC%B0%A8\">⬆ 목차</a></strong></p>\n<hr />\n<br />\n<blockquote>\n<p>출처</p>\n<p><a href=\"https://programmers.co.kr/learn/courses/30/lessons/59413\" target=\"_blank\">코딩테스트 연습 > GROUP BY > 입양 시각 구하기(2)</a></p>\n</blockquote>\n<h1 id=\"여러분의-댓글이-큰힘이-됩니다-๑̀ㅂ́و✧\" style=\"position:relative;\"><a href=\"#%EC%97%AC%EB%9F%AC%EB%B6%84%EC%9D%98-%EB%8C%93%EA%B8%80%EC%9D%B4-%ED%81%B0%ED%9E%98%EC%9D%B4-%EB%90%A9%EB%8B%88%EB%8B%A4-%E0%B9%91%CC%80%E3%85%82%CC%81%D9%88%E2%9C%A7\" aria-label=\"여러분의 댓글이 큰힘이 됩니다 ๑̀ㅂ́و✧ permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a>여러분의 댓글이 큰힘이 됩니다. (๑•̀ㅂ•́)و✧</h1>","frontmatter":{"title":" 프로그래머스 ▻ 입양 시각 구하기(2) ","date":"September 25, 2019"}}},"pageContext":{"slug":"/algorithm/programmers/sql/groupby/4/","previous":{"fields":{"slug":"/algorithm/programmers/sql/groupby/3/"},"frontmatter":{"title":" 프로그래머스 ▻ 입양 시각 구하기(1) ","category":"Algorithm"}},"next":{"fields":{"slug":"/algorithm/programmers/sql/isnull/2/"},"frontmatter":{"title":" 프로그래머스 ▻ 이름이 있는 동물의 아이디 ","category":"Algorithm"}}}},"staticQueryHashes":["3128451518","3956431471"]}