{"id":91718,"date":"2024-03-21T14:15:48","date_gmt":"2024-03-21T05:15:48","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/mysql-decode%e3%81%ae%e4%bd%bf%e7%94%a8%e3%81%a7%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba%e7%94%9f%e3%81%97%e3%81%9f%e5%a0%b4%e5%90%88%e3%81%ae%e5%af%be%e5%87%a6%e6%b3%95\/"},"modified":"2024-03-27T05:53:46","modified_gmt":"2024-03-26T20:53:46","slug":"mysql-decode%e3%81%ae%e4%bd%bf%e7%94%a8%e3%81%a7%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba%e7%94%9f%e3%81%97%e3%81%9f%e5%a0%b4%e5%90%88%e3%81%ae%e5%af%be%e5%87%a6%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/mysql-decode%e3%81%ae%e4%bd%bf%e7%94%a8%e3%81%a7%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba%e7%94%9f%e3%81%97%e3%81%9f%e5%a0%b4%e5%90%88%e3%81%ae%e5%af%be%e5%87%a6%e6%b3%95\/","title":{"rendered":"mysql decode\u306e\u4f7f\u7528\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u5bfe\u51e6\u6cd5"},"content":{"rendered":"<p>Oracle\u306eDECODE\u95a2\u6570\u306b\u76f8\u5f53\u3059\u308b\u95a2\u6570\u304cMySQL\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001CASE\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u540c\u69d8\u306e\u6a5f\u80fd\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code>SELECT \r\n    CASE column_name\r\n        WHEN value1 THEN result1\r\n        WHEN value2 THEN result2\r\n        ...\r\n        ELSE default_result\r\n    END as result\r\nFROM table_name;\r\n<\/code><\/pre>\n<p>column_name\u304c\u5224\u5b9a\u5bfe\u8c61\u306e\u30ab\u30e9\u30e0\u540d\u3001value1\u3001value2\u306a\u3069\u304c\u30ab\u30e9\u30e0\u5185\u306e\u5024\u3001result1\u3001result2\u306a\u3069\u304c\u5bfe\u5fdc\u3059\u308b\u5024\u306e\u7d50\u679c\u3001default_result\u304c\u30ab\u30e9\u30e0\u5185\u306e\u5024\u304c\u3059\u3079\u3066\u306e\u6307\u5b9a\u5024\u306b\u4e00\u81f4\u3057\u306a\u3044\u6642\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u7d50\u679c<\/p>\n<p>\u4ed6\u306e\u7a2e\u985e\u306eDECODE\u95a2\u6570\u306e\u554f\u984c\u3067\u304a\u56f0\u308a\u306e\u5834\u5408\u306f\u3001\u95a2\u6570\u306e\u8a73\u7d30\u60c5\u5831\u3092\u63d0\u4f9b\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u53ef\u80fd\u306a\u9650\u308a\u89e3\u6c7a\u65b9\u6cd5\u3092\u3054\u6848\u5185\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oracle\u306eDECODE\u95a2\u6570\u306b\u76f8\u5f53\u3059\u308b\u95a2\u6570\u304cMySQL\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001CASE\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u540c\u69d8\u306e\u6a5f\u80fd\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u4f8b\uff1a SELECT CASE column_name WHEN value1 THEN res [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-91718","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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