{"id":23562,"date":"2024-03-16T22:41:05","date_gmt":"2024-03-16T13:41:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%a7substr%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8b%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba\/"},"modified":"2025-08-07T16:24:34","modified_gmt":"2025-08-07T07:24:34","slug":"oracle%e3%81%a7substr%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8b%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%a7substr%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e5%88%87%e3%82%8a%e5%8f%96%e3%82%8b%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%8c%e7%99%ba\/","title":{"rendered":"Oracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f"},"content":{"rendered":"

Oracle\u3067\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u305f\u3081\u306b\u306f\u3001SUBSTR\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Syntax\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

\u6587\u5b57\u5217\u306e\u6307\u5b9a\u4f4d\u7f6e\u304b\u3089\u958b\u59cb\u3057\u3001\u6307\u5b9a\u3055\u308c\u305f\u9577\u3055\u3060\u3051\u306e\u90e8\u5206\u6587\u5b57\u5217\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n

string\u306f\u5207\u308a\u53d6\u308b\u5fc5\u8981\u304c\u3042\u308b\u6587\u5b57\u5217\u3067\u3001start_position\u306f\u5207\u308a\u53d6\u308a\u3092\u958b\u59cb\u3059\u308b\u4f4d\u7f6e\u3067\u3001length\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u5207\u308a\u53d6\u308a\u305f\u3044\u9577\u3055\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n

SUBSTR\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u6b21\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

    \n
  1. start_position\u306e\u5024\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002start_position\u306f\u3001\u4f55\u6587\u5b57\u76ee\u304b\u3089\u5207\u308a\u53d6\u308b\u304b\u3092\u793a\u3057\u3001\u305d\u306e\u5024\u306f\u6b63\u306e\u6574\u6570\u3067\u3042\u308b\u3079\u304d\u3067\u3059\u3002start_position\u304c1\u672a\u6e80\u307e\u305f\u306f\u6587\u5b57\u5217\u306e\u9577\u3055\u3088\u308a\u5927\u304d\u3044\u5834\u5408\u3001\u5207\u308a\u53d6\u308a\u306f\u6210\u529f\u3057\u307e\u305b\u3093\u3002<\/li>\n
  2. length\u306e\u5024\u304c\u6b63\u3057\u3044\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002length\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001SUBSTR\u95a2\u6570\u306fstart_position\u304b\u3089\u6587\u5b57\u5217\u306e\u672b\u5c3e\u307e\u3067\u3092\u5207\u308a\u53d6\u308a\u307e\u3059\u3002length\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u5024\u304c\u5207\u308a\u53d6\u3089\u308c\u308b\u9577\u3055\u306b\u306a\u308a\u307e\u3059\u3002length\u306e\u5024\u304c0\u3088\u308a\u5927\u304d\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n
  3. \u63d0\u4f9b\u3055\u308c\u305f\u6587\u5b57\u5217\u304c\u6709\u52b9\u3067\u3042\u308a\u3001\u958b\u59cb\u4f4d\u7f6e\u4ee5\u4e0a\u306e\u9577\u3055\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u306f\u4f7f\u7528\u4f8b\u306e\u3044\u304f\u3064\u304b\u3067\u3059\uff1a<\/p>\n

    – ‘Oracle’\u306e3\u6587\u5b57\u76ee\u4ee5\u964d\u306e\u90e8\u5206\u6587\u5b57\u5217\u3092\u53d6\u5f97\u3057\u307e\u3059
    \nSELECT SUBSTR(‘Oracle’, 3) FROM dual; – \u7d50\u679c\u306f “acle” \u3067\u3059\u3002<\/p>\n

    \u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u304b\u30893\u6587\u5b57\u76ee\u304b\u30892\u6587\u5b57\u53d6\u308a\u51fa\u3059\u3002
    \nSELECT SUBSTR(‘Oracle’, 3, 2) FROM dual; – \u7d50\u679c\u306f “ac” \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u3082\u3057\u554f\u984c\u304c\u89e3\u6c7a\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u5177\u4f53\u7684\u306a\u4f7f\u7528\u30b7\u30fc\u30f3\u306a\u3069\u3001\u3055\u3089\u306b\u8a73\u7d30\u306a\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u554f\u984c\u89e3\u6c7a\u306e\u304a\u624b\u4f1d\u3044\u304c\u3088\u308a\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    Oracle\u3067\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u305f\u3081\u306b\u306f\u3001SUBSTR\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Syntax\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a \u6587\u5b57\u5217\u306e\u6307\u5b9a\u4f4d\u7f6e\u304b\u3089\u958b\u59cb\u3057\u3001\u6307\u5b9a\u3055\u308c\u305f\u9577\u3055\u3060\u3051\u306e\u90e8\u5206\u6587\u5b57\u5217\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 string\u306f\u5207\u308a\u53d6\u308b\u5fc5\u8981\u304c\u3042\u308b\u6587\u5b57\u5217\u3067\u3001s […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-23562","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nOracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Oracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\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\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"Oracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/oracle\u3067substr\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u308b\u30a8\u30e9\u30fc\u304c\u767a\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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