{"id":646,"date":"2012-07-19T12:17:01","date_gmt":"2012-07-19T03:17:01","guid":{"rendered":"https:\/\/clouds.tokyo\/blog\/?p=646"},"modified":"2017-04-11T12:23:12","modified_gmt":"2017-04-11T03:23:12","slug":"mysql_add_col","status":"publish","type":"post","link":"https:\/\/clouds.tokyo\/blog\/mysql_add_col\/","title":{"rendered":"\u3010MySQL\u3011\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3059\u308b"},"content":{"rendered":"<p>MySQL\u3067\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u5f8c\u304b\u3089\u8ffd\u52a0\u3059\u308b\u3068\u304d\u306e\u66f8\u5f0f\u3092\u3059\u3050\u5fd8\u308c\u308b\u306e\u3067\u30e1\u30e2\u3002<\/p>\n<p>\u30c6\u30fc\u30d6\u30eb\u306e\u672b\u5c3e\u306b\u8ffd\u52a0<\/p>\n<pre>\r\nALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d ADD \u8ffd\u52a0\u30ab\u30e9\u30e0\u540d \u6761\u4ef6;\r\n<\/pre>\n<p>\u30c6\u30fc\u30d6\u30eb\u306e\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u306e\u5f8c\u308d\u306b\u8ffd\u52a0<\/p>\n<pre>\r\nALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d ADD \u8ffd\u52a0\u30ab\u30e9\u30e0\u540d \u6761\u4ef6 AFTER \u5bfe\u8c61\u30ab\u30e9\u30e0\u540d;\r\n<\/pre>\n<p>\u4f8b\uff1a<\/p>\n<pre>\r\nALTER TABLE table1 ADD column2 int not null default 0 AFTER column1;\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u3067\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u5f8c\u304b\u3089\u8ffd\u52a0\u3059\u308b\u3068\u304d\u306e\u66f8\u5f0f\u3092\u3059\u3050\u5fd8\u308c\u308b\u306e\u3067\u30e1\u30e2\u3002 \u30c6\u30fc\u30d6\u30eb\u306e\u672b\u5c3e\u306b\u8ffd\u52a0 ALTER TABLE \u30c6\u30fc\u30d6\u30eb\u540d ADD \u8ffd\u52a0\u30ab\u30e9\u30e0\u540d \u6761\u4ef6; \u30c6\u30fc\u30d6\u30eb\u306e\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u306e\u5f8c\u308d\u306b\u8ffd\u52a0 ALTER TA &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/clouds.tokyo\/blog\/mysql_add_col\/\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;\u3010MySQL\u3011\u30c6\u30fc\u30d6\u30eb\u306b\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3059\u308b&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":""},"categories":[2],"tags":[12,258,259],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pezW3u-aq","jetpack-related-posts":[{"id":532,"url":"https:\/\/clouds.tokyo\/blog\/mysql_del_innodb\/","url_meta":{"origin":646,"position":0},"title":"\u3010MySQL\u3011\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u305f\u306e\u306b\u5bb9\u91cf\u304c\u5909\u5316\u3057\u306a\u3044\u3068\u304d","author":"yamamoto","date":"2010\u5e748\u67086\u65e5","format":false,"excerpt":"MySQL\u3067\u30c6\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u304cInnoDB\u306e\u5834\u5408\u3001\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u3066\u3082\u5bb9\u91cf\u306f\u5909\u5316\u3057\u307e\u305b\u3093\u3002 \u5bb9\u91cf\u3092\u66f4\u65b0\u3059\u2026","rel":"","context":"\u5099\u5fd8\u9332","block_context":{"text":"\u5099\u5fd8\u9332","link":"https:\/\/clouds.tokyo\/blog\/category\/memo\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":235,"url":"https:\/\/clouds.tokyo\/blog\/sql_auto_increment\/","url_meta":{"origin":646,"position":1},"title":"\u3010MySQL\u3011\u81ea\u524d\u3067\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u3092\u63a1\u756a\u3057\u3066INSERT","author":"yamamoto","date":"2009\u5e7412\u67081\u65e5","format":false,"excerpt":"MySQL\u306b\u306f\u81ea\u52d5\u3067\u63a1\u756a\u3059\u308bAUTO_INCREMENT\u3068\u3044\u3046\u8a2d\u5b9a\u304c\u3042\u308a\u307e\u3059\u3002 \u57fa\u672c\u7684\u306b\u306f\u3053\u308c\u3092\u4f7f\u3048\u2026","rel":"","context":"\u5099\u5fd8\u9332","block_context":{"text":"\u5099\u5fd8\u9332","link":"https:\/\/clouds.tokyo\/blog\/category\/memo\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1867,"url":"https:\/\/clouds.tokyo\/blog\/mysql_dump_split\/","url_meta":{"origin":646,"position":2},"title":"[Linux]MySQL\u306e\u30c0\u30f3\u30d7\u30d5\u30a1\u30a4\u30eb\u304c\u5927\u304d\u3059\u304e\u308b\u306e\u3067\u30c6\u30fc\u30d6\u30eb\u3054\u3068\u306b\u5206\u5272\u3059\u308b","author":"yamamoto","date":"2025\u5e749\u670816\u65e5","format":false,"excerpt":"\u30b7\u30b9\u30c6\u30e0\u30c8\u30e9\u30d6\u30eb\u306e\u539f\u56e0\u3092\u63a2\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u78ba\u8a8d\u3057\u305f\u3044\u3002 \u30c0\u30f3\u30d7\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u7279\u5b9a\u306e\u2026","rel":"","context":"\u5099\u5fd8\u9332","block_context":{"text":"\u5099\u5fd8\u9332","link":"https:\/\/clouds.tokyo\/blog\/category\/memo\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":661,"url":"https:\/\/clouds.tokyo\/blog\/mysql_case\/","url_meta":{"origin":646,"position":3},"title":"\u3010MySQL\u3011SQL\u3067IF\u6587\uff08CASE\uff09\u3092\u4f7f\u3046","author":"yamamoto","date":"2012\u5e748\u67082\u65e5","format":false,"excerpt":"SQL\u3067\u6761\u4ef6\u306b\u3088\u3063\u3066\u8fd4\u3059\u5024\u3092\u5909\u3048\u305f\u3044\u3068\u304d\u3001 NULL\u306e\u3068\u304d\u306fIFNULL\u3067\u7c21\u5358\u3067\u3059\u304c\u3001 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