{"id":19878,"date":"2024-03-16T12:45:05","date_gmt":"2024-03-16T03:45:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/mysql%e3%81%a7%e3%83%86%e3%83%bc%e3%83%96%e3%83%ab%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%97%e3%81%a6%e3%83%87%e3%83%95%e3%82%a9%e3%83%ab%e3%83%88\/"},"modified":"2025-08-06T23:14:26","modified_gmt":"2025-08-06T14:14:26","slug":"mysql%e3%81%a7%e3%83%86%e3%83%bc%e3%83%96%e3%83%ab%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%97%e3%81%a6%e3%83%87%e3%83%95%e3%82%a9%e3%83%ab%e3%83%88","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/mysql%e3%81%a7%e3%83%86%e3%83%bc%e3%83%96%e3%83%ab%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%97%e3%81%a6%e3%83%87%e3%83%95%e3%82%a9%e3%83%ab%e3%83%88\/","title":{"rendered":"mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"

MySQL\u3067\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u3001`ALTER TABLE`\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4f8b\u3067\u3059\uff1a<\/p>\n

ALTER\u00a0TABLE\u00a0\u8868\u540d<\/pre>\n
ADD\u00a0\u5217\u540d\u00a0\u6570\u636e\u7c7b\u578b\u00a0DEFAULT\u00a0\u9ed8\u8ba4\u503c;<\/p>\n
<\/pre>\n
\u300c\u8868\u540d\u300d\u3068\u306f\u3001\u8ffd\u52a0\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u540d\u524d\u3092\u6307\u3057\u3001\u300c\u5217\u540d\u300d\u306f\u8ffd\u52a0\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u540d\u524d\u3001\u300c\u30c7\u30fc\u30bf\u578b\u300d\u306f\u65b0\u3057\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30c7\u30fc\u30bf\u578b\u3001\u300c\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u300d\u306f\u65b0\u3057\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
\u4f8b\u3048\u3070\u3001`users`\u3068\u3044\u3046\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u308a\u3001\u305d\u306e\u30c6\u30fc\u30d6\u30eb\u306b`age`\u3068\u3044\u3046\u65b0\u3057\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092`18`\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306eSQL\u6587\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n
ALTER\u00a0TABLE\u00a0users<\/pre>\n
ADD\u00a0age\u00a0INT\u00a0DEFAULT\u00a018;<\/p>\n
<\/pre>\n
“\u3053\u308c\u306f\u3001`users`\u30c6\u30fc\u30d6\u30eb\u306b`age`\u3068\u3044\u3046\u65b0\u3057\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3001\u30c7\u30fc\u30bf\u578b\u3092\u6574\u6570\uff08INT\uff09\u306b\u8a2d\u5b9a\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092`18`\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002”<\/p>\n
\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u8868\u306b\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5024\u3092\u6301\u3064\u65b0\u3057\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u884c\u306e\u4e2d\u3067\u8a72\u5f53\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u6b20\u3051\u3066\u3044\u308b\u5834\u6240\u306b\u81ea\u52d5\u7684\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u304c\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
MySQL\u3067\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u3001`ALTER TABLE`\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4f8b\u3067\u3059\uff1a ALTER\u00a0TABLE\u00a0\u8868\u540d ADD\u00a0\u5217\u540d\u00a0\u6570\u636e\u7c7b\u578b\u00a0DEFAULT\u00a0\u9ed8\u8ba4\u503c; \u300c\u8868\u540d\u300d\u3068\u306f\u3001\u8ffd […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,18],"class_list":["post-19878","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-18"],"yoast_head":"\nmysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\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\/mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\uff1f\" \/>\n<meta property=\"og:description\" content=\"mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\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\/mysql\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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