{"id":134861,"date":"2024-03-26T09:30:00","date_gmt":"2024-03-26T00:30:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%aedecode%e9%96%a2%e6%95%b0%e5%be%b9%e5%ba%95%e8%a7%a3%e8%aa%ac\/"},"modified":"2024-03-27T06:49:16","modified_gmt":"2024-03-26T21:49:16","slug":"oracle%e3%81%aedecode%e9%96%a2%e6%95%b0%e5%be%b9%e5%ba%95%e8%a7%a3%e8%aa%ac","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%aedecode%e9%96%a2%e6%95%b0%e5%be%b9%e5%ba%95%e8%a7%a3%e8%aa%ac\/","title":{"rendered":"Oracle\u306eDECODE\u95a2\u6570\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

Oracle\u306edecode\u95a2\u6570\u3068\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u3092\u57fa\u306b\u30011\u3064\u4ee5\u4e0a\u306e\u5f0f\u3092\u8a55\u4fa1\u3057\u3001\u6761\u4ef6\u306b\u30de\u30c3\u30c1\u3057\u305f\u7d50\u679c\u306e\u5f0f\u3092\u8fd4\u3059\u3001\u6761\u4ef6\u5f0f\u95a2\u6570\u3067\u3059\u3002<\/p>\n

\u6587\u6cd5:<\/p>\n

DECODE(expr, \u691c\u7d221, \u7d50\u679c1, \u691c\u7d222, \u7d50\u679c2, …, \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u7d50\u679c)<\/p>\n

\u5f15\u6570\u306e\u8aac\u660e:<\/p>\n

    \n
  1. \u6bd4\u8f03\u3057\u305f\u3044\u5f0f\u3002<\/li>\n
  2. \u691c\u7d22\u6761\u4ef61\u3001\u691c\u7d22\u6761\u4ef62\u3001\u2026\uff1a\u6bd4\u8f03\u3059\u308b\u691c\u7d22\u6761\u4ef6<\/li>\n
  3. result1, result2, \u2026: \u691c\u7d22\u5f0f\u3068\u4e00\u81f4\u3057\u305f\u3068\u304d\u306b\u8fd4\u3059\u3079\u304d\u7d50\u679c\u5f0f<\/li>\n
  4. default_result\uff1a\u691c\u7d22\u5f0f\u3068\u4e00\u81f4\u3059\u308b\u7d50\u679c\u5f0f\u304c\u306a\u3044\u5834\u5408\u306b\u8fd4\u3059\u65e2\u5b9a\u306e\u7d50\u679c\u3092\u8868\u3059\u3001\u7701\u7565\u53ef\u80fd\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3002<\/li>\n<\/ol>\n

    \u4f7f\u7528\u4f8b\uff1a<\/p>\n

      \n
    1. \u7c21\u5358\u306b\u5229\u7528<\/li>\n<\/ol>\n

      name \u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n

      CASE WHEN age = 18 THEN ‘\u6210\u5e74’ ELSE ‘\u672a\u6210\u5e74’ END AS age_status<\/p>\n

      \u5b66\u751f\u304b\u3089<\/p>\n

      \u3053\u306e\u4f8b\u3067\u306f\u3001\u751f\u5f92\u306e\u5e74\u9f62\u304c18\u306e\u5834\u5408\u306f\u300c\u6210\u5e74\u300d\u3092\u3001\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u300c\u672a\u6210\u5e74\u300d\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

        \n
      1. \u591a\u6761\u4ef6\u5224\u5b9a\uff1a<\/li>\n<\/ol>\n

        \u300cname\u300d\u3092\u5bfe\u8c61\u306b\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n

        DECODE(gender, ‘M’, ‘\u7537\u6027’, ‘F’, ‘\u5973\u6027’, ‘\u305d\u306e\u4ed6’) AS gender_status<\/p>\n

        \u5b66\u751f\u304b\u3089<\/p>\n

        \u3053\u306e\u4f8b\u3067\u306f\u3001\u5b66\u751f\u306e\u6027\u5225\u304c\u2019M\u2019\u3067\u3042\u308c\u3070\u2019\u7537\u6027\u2019\u3092\u8fd4\u3057\u3001\u2019F\u2019\u3067\u3042\u308c\u3070\u2019\u5973\u6027\u2019\u3092\u8fd4\u3057\u3001\u305d\u308c\u4ee5\u5916\u306f\u2019\u305d\u306e\u4ed6\u2019\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

          \n
        1. \u3053\u306e\u6587\u3092\u65e5\u672c\u8a9e\u306b\u7ffb\u8a33\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n

          name\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n

          CASE
          \nWHEN department = ‘IT’ THEN ‘\u60c5\u5831\u6280\u8853’
          \nWHEN department = ‘HR’ THEN ‘\u4eba\u4e8b’
          \nELSE ‘\u305d\u306e\u4ed6’
          \nEND AS department_name<\/p>\n

          \u793e\u54e1\u3088\u308a<\/p>\n

          \u3053\u306e\u4f8b\u3067\u306f\u3001\u793e\u54e1\u304c\u6240\u5c5e\u3059\u308b\u90e8\u9580\u304c\u300cIT\u300d\u306a\u3089\u3070\u300c\u60c5\u5831\u6280\u8853\u300d\u3068\u8fd4\u3057\u3001\u300cHR\u300d\u306a\u3089\u3070\u300c\u4eba\u4e8b\u300d\u3068\u8fd4\u3057\u3001\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u300c\u305d\u306e\u4ed6\u300d\u3068\u8fd4\u3059\u3002<\/p>\n

          \u307e\u3068\u3081<\/p>\n

          DECODE \u95a2\u6570\u306f Oracle \u306e\u4fbf\u5229\u306a\u6761\u4ef6\u5f0f\u95a2\u6570\u3067\u3042\u308a\u3001\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066 1 \u3064\u4ee5\u4e0a\u306e\u5f0f\u3092\u8a55\u4fa1\u3057\u3001\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u7d50\u679c\u5f0f\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30af\u30a8\u30ea\u3067\u6761\u4ef6\u4ed8\u304d\u306e\u8a55\u4fa1\u3068\u7d50\u679c\u306e\u5909\u63db\u3092\u884c\u3046\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

          Oracle\u306edecode\u95a2\u6570\u3068\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u3092\u57fa\u306b\u30011\u3064\u4ee5\u4e0a\u306e\u5f0f\u3092\u8a55\u4fa1\u3057\u3001\u6761\u4ef6\u306b\u30de\u30c3\u30c1\u3057\u305f\u7d50\u679c\u306e\u5f0f\u3092\u8fd4\u3059\u3001\u6761\u4ef6\u5f0f\u95a2\u6570\u3067\u3059\u3002 \u6587\u6cd5: DECODE(expr, \u691c\u7d221, \u7d50\u679c1, \u691c\u7d222, \u7d50\u679c2, …, […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-134861","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nOracle\u306eDECODE\u95a2\u6570\u5fb9\u5e95\u89e3\u8aac - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/oracle\u306edecode\u95a2\u6570\u5fb9\u5e95\u89e3\u8aac\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle\u306eDECODE\u95a2\u6570\u5fb9\u5e95\u89e3\u8aac\" \/>\n<meta property=\"og:description\" content=\"Oracle\u306edecode\u95a2\u6570\u3068\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u3092\u57fa\u306b\u30011\u3064\u4ee5\u4e0a\u306e\u5f0f\u3092\u8a55\u4fa1\u3057\u3001\u6761\u4ef6\u306b\u30de\u30c3\u30c1\u3057\u305f\u7d50\u679c\u306e\u5f0f\u3092\u8fd4\u3059\u3001\u6761\u4ef6\u5f0f\u95a2\u6570\u3067\u3059\u3002 \u6587\u6cd5: DECODE(expr, \u691c\u7d221, \u7d50\u679c1, \u691c\u7d222, \u7d50\u679c2, …, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/oracle\u306edecode\u95a2\u6570\u5fb9\u5e95\u89e3\u8aac\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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