{"id":84501,"date":"2024-03-21T04:24:06","date_gmt":"2024-03-20T19:24:06","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e5%80%a4%e3%82%92%e3%83%a6%e3%83%8b%e3%83%bc%e3%82%af%e3%81%ab%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9\/"},"modified":"2024-03-27T02:58:56","modified_gmt":"2024-03-26T17:58:56","slug":"sql%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e5%80%a4%e3%82%92%e3%83%a6%e3%83%8b%e3%83%bc%e3%82%af%e3%81%ab%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e5%80%a4%e3%82%92%e3%83%a6%e3%83%8b%e3%83%bc%e3%82%af%e3%81%ab%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9\/","title":{"rendered":"SQL\u3067\u7279\u5b9a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u30e6\u30cb\u30fc\u30af\u306b\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>SQL\u306eUNIQUE\u5236\u7d04\u306f\u7279\u5b9a\u306e\u5217\u306e\u5024\u3092\u4e00\u610f\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002UNIQUE\u5236\u7d04\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u7279\u5b9a\u306e\u5217\u306e\u3059\u3079\u3066\u306e\u5024\u304c\u4e00\u610f\u3067\u3042\u308a\u3001\u91cd\u8907\u3057\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210\u6642\u306b\u306f\u3001\u5217\u5b9a\u7fa9\u3067UNIQUE\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e\u5217\u306b\u4e00\u610f\u5236\u7d04\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001<\/p>\n<pre class=\"post-pre\">CREATE\u00a0TABLE\u00a0\u8868\u540d\u00a0(<\/pre>\n<p>\u5b57\u6bb5\u540d\u00a0\u6570\u636e\u7c7b\u578b\u00a0UNIQUE,<\/p>\n<p>&nbsp;<\/p>\n<p>\u2026 );<\/p>\n<pre class=\"post-pre\"><\/pre>\n<p>\u307e\u305f\u3001\u65e2\u5b58\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u5bfe\u3057\u3066ALTER TABLE\u6587\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u5236\u7d04\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\u3001<\/p>\n<pre class=\"post-pre\">ALTER\u00a0TABLE\u00a0\u8868\u540d\r\nADD\u00a0CONSTRAINT\u00a0\u7ea6\u675f\u540d\u00a0UNIQUE\u00a0(\u5b57\u6bb5\u540d);<\/pre>\n<p>\u307e\u305f\u3001UNIQUE \u5236\u7d04\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u81ea\u52d5\u7684\u306b\u4e00\u610f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u4f5c\u6210\u304c\u884c\u308f\u308c\u3001\u4e00\u610f\u5024\u306e\u691c\u7d22\u3084\u691c\u8a3c\u304c\u9ad8\u901f\u5316\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u6642\u307e\u305f\u306f\u5236\u7d04\u8ffd\u52a0\u6642\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u540d\u3092\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u3063\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u540d\u304c\u81ea\u52d5\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u7d44\u5408\u305b\u5024\u3092\u4e00\u610f\u3068\u3059\u308b\u5834\u5408\u306f\u3001UNIQUE \u5236\u7d04\u306e\u4e2d\u306b\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u540d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\">CREATE\u00a0TABLE\u00a0\u8868\u540d\u00a0(<\/pre>\n<p>&nbsp;<\/p>\n<p>\u5b57\u6bb5\u540d1\u00a0\u6570\u636e\u7c7b\u578b,<\/p>\n<p>&nbsp;<\/p>\n<p>\u5b57\u6bb5\u540d2\u00a0\u6570\u636e\u7c7b\u578b,<\/p>\n<p>&nbsp;<\/p>\n<p>\u2026<\/p>\n<p>&nbsp;<\/p>\n<p>UNIQUE\u00a0(\u5b57\u6bb5\u540d1,\u00a0\u5b57\u6bb5\u540d2) );<\/p>\n<pre class=\"post-pre\"><\/pre>\n<p>\u3042\u308b\u3044\u306f\u3001ALTER TABLE\u6587\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u5236\u7d04\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\">ALTER\u00a0TABLE\u00a0\u8868\u540d\r\nADD\u00a0CONSTRAINT\u00a0\u7ea6\u675f\u540d\u00a0UNIQUE\u00a0(\u5b57\u6bb5\u540d1,\u00a0\u5b57\u6bb5\u540d2);<\/pre>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u8868\u5185\u306e\u3053\u308c\u3089\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u5024\u306f\u4e00\u610f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL\u306eUNIQUE\u5236\u7d04\u306f\u7279\u5b9a\u306e\u5217\u306e\u5024\u3092\u4e00\u610f\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002UNIQUE\u5236\u7d04\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u7279\u5b9a\u306e\u5217\u306e\u3059\u3079\u3066\u306e\u5024\u304c\u4e00\u610f\u3067\u3042\u308a\u3001\u91cd\u8907\u3057\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210\u6642\u306b\u306f\u3001\u5217\u5b9a\u7fa9\u3067UNIQUE\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-84501","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SQL\u3067\u7279\u5b9a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u30e6\u30cb\u30fc\u30af\u306b\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5 - 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\/sql\u3067\u7279\u5b9a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u30e6\u30cb\u30fc\u30af\u306b\u8a2d\u5b9a\u3059\u308b\u65b9\/\" \/>\n<meta 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