{"id":13507,"date":"2024-03-15T19:29:14","date_gmt":"2024-03-15T10:29:14","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%ae%e4%b8%ad%e3%81%a7isnull%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c%e3%81%a7%e3%81%8d%e3%81%aa%e3%81%84%e5%a0%b4%e5%90%88%e3%80%81\/"},"modified":"2025-08-05T17:34:59","modified_gmt":"2025-08-05T08:34:59","slug":"oracle%e3%81%ae%e4%b8%ad%e3%81%a7isnull%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c%e3%81%a7%e3%81%8d%e3%81%aa%e3%81%84%e5%a0%b4%e5%90%88%e3%80%81","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/oracle%e3%81%ae%e4%b8%ad%e3%81%a7isnull%e9%96%a2%e6%95%b0%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c%e3%81%a7%e3%81%8d%e3%81%aa%e3%81%84%e5%a0%b4%e5%90%88%e3%80%81\/","title":{"rendered":"oracle\u306e\u4e2d\u3067isnull\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Oracle\u306b\u306f\u3001\u76f4\u63a5\u7684\u306aISNULL\u95a2\u6570\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u540c\u69d8\u306e\u52b9\u679c\u3092\u5f97\u308b\u305f\u3081\u306bCOALESCE\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002COALESCE\u95a2\u6570\u306f\u8907\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a\u3001\u6700\u521d\u306eNULL\u3067\u306a\u3044\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304cNULL\u306e\u5834\u5408\u306f\u3001NULL\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u7279\u5b9a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304cNULL\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001COALESCE\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u305d\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u3001COALESCE\u95a2\u6570\u306e\u8fd4\u308a\u5024\u3092NULL\u3068\u6bd4\u8f03\u3057\u3066\u5224\u65ad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name <span class=\"hljs-keyword\">WHERE<\/span> <span class=\"hljs-built_in\">COALESCE<\/span>(column_name, <span class=\"hljs-keyword\">NULL<\/span>) <span class=\"hljs-keyword\">IS<\/span> <span class=\"hljs-keyword\">NULL<\/span>;\r\n<\/code><\/pre>\n<p>\u524d\u8ff0\u306e\u6587\u306b\u304a\u3044\u3066\u3001column_name\u30d5\u30a3\u30fc\u30eb\u30c9\u304cNULL\u306e\u5834\u5408\u3001COALESCE\u95a2\u6570\u306fNULL\u3092\u8fd4\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001NULL\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001\u771f\u3068\u306a\u308a\u3001\u305d\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304cNULL\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u5e0c\u671b\u304a\u5f79\u306b\u7acb\u3066\u307e\u3059\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oracle\u306b\u306f\u3001\u76f4\u63a5\u7684\u306aISNULL\u95a2\u6570\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u540c\u69d8\u306e\u52b9\u679c\u3092\u5f97\u308b\u305f\u3081\u306bCOALESCE\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002COALESCE\u95a2\u6570\u306f\u8907\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a\u3001\u6700\u521d\u306eNULL\u3067\u306a\u3044\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30d1 [&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":[26,61],"class_list":["post-13507","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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