{"id":7822,"date":"2024-03-14T22:51:18","date_gmt":"2024-03-14T13:51:18","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%921%e3%81%a4%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ab%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/"},"modified":"2025-08-03T16:43:35","modified_gmt":"2025-08-03T07:43:35","slug":"sql%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%921%e3%81%a4%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ab%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%921%e3%81%a4%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ab%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/","title":{"rendered":"SQL \u30c7\u30fc\u30bf\u7d50\u5408\uff1a\u8907\u6570\u884c\u30921\u3064\u306b\u307e\u3068\u3081\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>SQL\u3067\u306f\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30921\u3064\u306b\u7d50\u5408\u3059\u308b\u305f\u3081\u306b\u3001\u96c6\u7d04\u95a2\u6570\u3068GROUP BY\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u751f\u5f92\u306e\u6210\u7e3e\u60c5\u5831\u304c\u542b\u307e\u308c\u305f\u8868\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002\u751f\u5f92\u4e00\u4eba\u3072\u3068\u308a\u306b\u8907\u6570\u306e\u6210\u7e3e\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u308c\u3089\u306e\u6210\u7e3e\u30921\u3064\u306e\u8a18\u9332\u306b\u7d50\u5408\u3057\u305f\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306eSQL\u6587\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> student_id, <span class=\"hljs-built_in\">MAX<\/span>(grade) <span class=\"hljs-keyword\">AS<\/span> max_grade, <span class=\"hljs-built_in\">MIN<\/span>(grade) <span class=\"hljs-keyword\">AS<\/span> min_grade, <span class=\"hljs-built_in\">AVG<\/span>(grade) <span class=\"hljs-keyword\">AS<\/span> avg_grade\r\n<span class=\"hljs-keyword\">FROM<\/span> grades\r\n<span class=\"hljs-keyword\">GROUP<\/span> <span class=\"hljs-keyword\">BY<\/span> student_id;\r\n<\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5b66\u751f\u3054\u3068\u306e\u6700\u9ad8\u70b9\u3001\u6700\u4f4e\u70b9\u3001\u5e73\u5747\u70b9\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306bMAX\u3001MIN\u3001AVG\u306e\u96c6\u8a08\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3001\u5b66\u751fID\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u305f\u3081\u306bGROUP BY\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3001\u6700\u7d42\u7684\u306b\u8907\u6570\u306e\u6210\u7e3e\u30ec\u30b3\u30fc\u30c9\u30921\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u7d50\u5408\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL\u3067\u306f\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30921\u3064\u306b\u7d50\u5408\u3059\u308b\u305f\u3081\u306b\u3001\u96c6\u7d04\u95a2\u6570\u3068GROUP BY\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\u3001\u751f\u5f92\u306e\u6210\u7e3e\u60c5\u5831\u304c\u542b\u307e\u308c\u305f\u8868\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002\u751f\u5f92\u4e00\u4eba\u3072\u3068\u308a\u306b\u8907\u6570\u306e\u6210\u7e3e\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u308c\u3089\u306e [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1666,119,2989,14,822],"class_list":["post-7822","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-group_concat","tag-sql","tag-string_agg","tag-14","tag-822"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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