{"id":25,"date":"2014-02-23T18:11:24","date_gmt":"2014-02-23T09:11:24","guid":{"rendered":"http:\/\/www.raythebm.net\/weblog\/?p=25"},"modified":"2014-02-23T18:11:24","modified_gmt":"2014-02-23T09:11:24","slug":"mysql-%e3%81%ae-varchar-%e6%9c%80%e5%a4%a7%e6%96%87%e5%ad%97%e6%95%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"https:\/\/www.raythebm.net\/weblog\/archives\/25","title":{"rendered":"MySQL \u306e varchar \u6700\u5927\u6587\u5b57\u6570\u306b\u3064\u3044\u3066"},"content":{"rendered":"<p>\u63b2\u984c\u306e\u4ef6\u3067\u3061\u3087\u3063\u3068\u5f15\u3063\u304b\u304b\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u3001\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u30e1\u30e2\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>MySQL \u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u898b\u308b\u3068\u3001\u300c10.5 \u30c7\u30fc\u30bf\u30bf\u30a4\u30d7\u304c\u5fc5\u8981\u3068\u3059\u308b\u8a18\u61b6\u5bb9\u91cf\u300d\u30da\u30fc\u30b8\u306b \u300evarchar \u578b\u30ab\u30e9\u30e0\u306e\u6709\u52b9\u6700\u5927\u9577\u306f 65532 \u307e\u3067\u300f\u3068\u66f8\u3044\u3066\u3042\u3063\u305f\u306e\u3067\u3001\u7d20\u76f4\u306b\u300cvarchar(65532)\u300d\u3067\u4f7f\u304a\u3046\u3068\u3057\u305f\u3089\u6012\u3089\u308c\u307e\u3057\u305f\u3002<br \/>\n\u3068\u3044\u3046\u304b\u3001\u52dd\u624b\u306b mediumtext \u306b\u5909\u66f4\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u4ed5\u65b9\u7121\u3044\u306e\u3067\u8272\u3005\u8a66\u3057\u3066\u3044\u305f\u3068\u3053\u308d\u3001\u306a\u305c\u304b\u300cvarchar(20000)\u300d\u3060\u3068\u901a\u3063\u305f\u306e\u3067\u3001\u305d\u306e\u5f8c\u306b alter table \u3067\u30ab\u30e9\u30e0\u9577\u3092 varchar(25000) \u306b\u5897\u3084\u305d\u3046\u3068\u3057\u305f\u3068\u3053\u308d\u3067 \u300c\u6700\u5927 21845 \u307e\u3067\u3057\u304b\u4f7f\u3048\u3078\u3093\u3067(\u610f\u8a33)\u300d\u3068\u3044\u3046\u304a\u53f1\u308a\u3092\u53d7\u3051\u3001\u305d\u3046\u3044\u3048\u3070 UTF-8 \u304c\u6700\u59273\u30d0\u30a4\u30c8\u98df\u3046\u3093\u3060\u3063\u3051\u3068\u601d\u3044\u51fa\u3057\u3066 3 \u00d7 21845 \u3092\u8a08\u7b97\u3057\u3066\u307f\u305f\u3089\u3001\u3074\u3063\u305f\u308a 65535 \u3060\u3063\u305f\u3068\u3044\u3046\u304a\u8a71\u3067\u3057\u305f\u3002<\/p>\n<p>\u3064\u307e\u308a varchar \u306e\u30b5\u30a4\u30ba\u6307\u5b9a\u306f\u3001\u6700\u5927\u3067\u3082\u300c65535 \u00f7 \u6587\u5b57\u306e\u30d0\u30a4\u30c8\u6570\u300d\u307e\u3067\u3057\u304b\u4f7f\u3048\u306a\u3044\u3068\u3044\u3046\u6559\u8a13\u3092\u5f97\u305f\u306e\u3067\u3057\u305f\u3002<br \/>\n\u3042\u3068\u3001text\u7cfb\u306e\u30ab\u30e9\u30e0\u3067\u3082\u300c\u9577\u3055=\u6587\u5b57\u6570\u00d7\u6587\u5b57\u306e\u30d0\u30a4\u30c8\u6570\u300d\u3067\u8a08\u7b97\u3055\u308c\u308b\u3088\u3046\u3067\u3059\u3002\u4e0a\u306e\u4f8b\u3067 text \u3088\u308a\u3082\u9577\u3044\u578b\u3067\u3042\u308b mediumtext (2^16(=65536) &lt; L &lt; 2^32) \u306b\u5909\u63db\u3055\u308c\u3066\u3044\u305f\u4e8b\u304b\u3089\u6c17\u4ed8\u304d\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63b2\u984c\u306e\u4ef6\u3067\u3061\u3087\u3063\u3068\u5f15\u3063\u304b\u304b\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u3001\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u30e1\u30e2\u3057\u3066\u304a\u304d\u307e\u3059\u3002 MySQL \u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u898b\u308b\u3068\u3001\u300c10.5 \u30c7\u30fc\u30bf\u30bf\u30a4\u30d7\u304c\u5fc5\u8981\u3068\u3059\u308b\u8a18\u61b6\u5bb9\u91cf\u300d\u30da\u30fc\u30b8\u306b \u300evarchar \u578b\u30ab\u30e9\u30e0\u306e\u6709\u52b9\u6700\u5927\u9577\u306f 6553 &hellip; <a href=\"https:\/\/www.raythebm.net\/weblog\/archives\/25\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[14,13],"class_list":["post-25","post","type-post","status-publish","format-standard","hentry","category-it","tag-memo","tag-mysql"],"_links":{"self":[{"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":2,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":27,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/posts\/25\/revisions\/27"}],"wp:attachment":[{"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/media?parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/categories?post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.raythebm.net\/weblog\/wp-json\/wp\/v2\/tags?post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}