{"id":601,"date":"2024-11-23T15:08:17","date_gmt":"2024-11-23T07:08:17","guid":{"rendered":"http:\/\/www.chan.ink\/?p=601"},"modified":"2024-11-23T15:08:20","modified_gmt":"2024-11-23T07:08:20","slug":"%e3%80%90mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e3%80%91collate-utf8_general_ci","status":"publish","type":"post","link":"http:\/\/www.chan.ink\/index.php\/2024\/11\/23\/%e3%80%90mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e3%80%91collate-utf8_general_ci\/","title":{"rendered":"\u3010MySQL\u6570\u636e\u5e93\u3011collate utf8_general_ci"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">create database usersdb default charset utf8 collate utf8_general_ci; collate utf8_general_ci\u662f\u4ec0\u4e48\u610f\u601d<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">ChatGPT \u8bf4\uff1a<\/h6>\n\n\n\n<p class=\"wp-block-paragraph\">ChatGPT<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 MySQL \u4e2d\uff0c<code>COLLATE<\/code> \u662f\u7528\u6765\u5b9a\u4e49\u6392\u5e8f\u89c4\u5219\u7684\uff0c<code>utf8_general_ci<\/code> \u662f\u4e00\u79cd\u6392\u5e8f\u89c4\u5219\u3002\u8ba9\u6211\u4eec\u8be6\u7ec6\u4e86\u89e3\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u89e3\u91ca<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>utf8_general_ci<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong><code>utf8<\/code><\/strong>\uff1a\u6307\u5b57\u7b26\u96c6\uff08charset\uff09\uff0c\u8868\u793a\u652f\u6301 Unicode \u7684 UTF-8 \u5b57\u7b26\u7f16\u7801\uff0c\u53ef\u4ee5\u5b58\u50a8\u51e0\u4e4e\u6240\u6709\u8bed\u8a00\u7684\u5b57\u7b26\u3002<\/li>\n\n\n\n<li><strong><code>general<\/code><\/strong>\uff1a\u8868\u793a\u6392\u5e8f\u89c4\u5219\u7684\u7c7b\u578b\u3002<\/li>\n\n\n\n<li><strong><code>ci<\/code><\/strong>\uff1a\u8868\u793a\u6392\u5e8f\u89c4\u5219\u662f <strong>case-insensitive<\/strong>\uff08\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b8c\u6574\u7684<code>COLLATE<\/code>\u4f5c\u7528<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u4e86\u5982\u4f55\u6bd4\u8f83\u548c\u6392\u5e8f\u5b57\u7b26\u4e32\u6570\u636e\uff0c\u4f8b\u5982 <code>'a'<\/code> \u662f\u5426\u7b49\u4e8e <code>'A'<\/code>\uff0c\u6216\u8005\u6309\u5b57\u6bcd\u987a\u5e8f\u6392\u5217\u65f6 <code>'a'<\/code> \u5e94\u8be5\u5728 <code>'b'<\/code> \u4e4b\u524d\u3002<\/li>\n\n\n\n<li><code>utf8_general_ci<\/code> \u6392\u5e8f\u89c4\u5219\u5177\u4f53\u8868\u73b0\u4e3a\uff1a\u6bd4\u8f83\u5b57\u7b26\u4e32\u65f6\u5ffd\u7565\u5927\u5c0f\u5199\uff0c\u4f8b\u5982 <code>'a'<\/code> \u548c <code>'A'<\/code> \u4f1a\u88ab\u8ba4\u4e3a\u662f\u76f8\u7b49\u7684\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5e94\u7528\u573a\u666f<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u521b\u5efa\u6570\u636e\u5e93\u6216\u8868\u65f6\uff0c\u53ef\u4ee5\u4e3a\u5b57\u7b26\u96c6\u548c\u6392\u5e8f\u89c4\u5219\u8fdb\u884c\u5168\u5c40\u8bbe\u7f6e\u3002\u4f8b\u5982\uff1asql\u590d\u5236\u4ee3\u7801<code>CREATE DATABASE usersdb DEFAULT CHARSET utf8 COLLATE utf8_general_ci; <\/code>\u4ee5\u4e0a\u8bed\u53e5\u7684\u542b\u4e49\u662f\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93 <code>usersdb<\/code> \u5c06\u4f7f\u7528 UTF-8 \u5b57\u7b26\u7f16\u7801\u3002<\/li>\n\n\n\n<li>\u5728\u5b58\u50a8\u548c\u6bd4\u8f83\u5b57\u7b26\u4e32\u65f6\uff0c\u91c7\u7528 <code>utf8_general_ci<\/code> \u6392\u5e8f\u89c4\u5219\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><code>utf8_general_ci<\/code> vs. <code>utf8_unicode_ci<\/code><\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>utf8_general_ci<\/code><\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6027\u80fd\u8f83\u9ad8\uff0c\u56e0\u4e3a\u5b83\u91c7\u7528\u8f83\u7b80\u5355\u7684\u6bd4\u8f83\u89c4\u5219\u3002<\/li>\n\n\n\n<li>\u4e0d\u5904\u7406\u67d0\u4e9b\u590d\u6742\u8bed\u8a00\u7684\u7279\u6b8a\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u5728\u5fb7\u8bed\u4e2d\uff0c<code>\u00df<\/code> \u548c <code>ss<\/code> \u662f\u4e0d\u540c\u7684\uff0c\u800c <code>utf8_general_ci<\/code> \u4f1a\u8ba4\u4e3a\u5b83\u4eec\u76f8\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>utf8_unicode_ci<\/code><\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6027\u80fd\u7565\u4f4e\uff0c\u4f46\u6392\u5e8f\u89c4\u5219\u66f4\u7cbe\u786e\u3002<\/li>\n\n\n\n<li>\u8003\u8651\u4e86 Unicode \u6807\u51c6\u4e2d\u7684\u8bed\u8a00\u548c\u6587\u5316\u4e60\u60ef\uff0c\u4f8b\u5982\u5fb7\u8bed\u4e2d\u7684 <code>\u00df<\/code> \u548c <code>ss<\/code> \u4f1a\u88ab\u8ba4\u4e3a\u4e0d\u540c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>utf8_general_ci<\/code><\/strong> \u662f\u4e00\u79cd\u901a\u7528\u7684\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u6392\u5e8f\u89c4\u5219\uff0c\u9002\u7528\u4e8e\u5927\u90e8\u5206\u573a\u666f\uff0c\u6027\u80fd\u8f83\u4f18\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4f60\u7684\u5e94\u7528\u5bf9\u8bed\u8a00\u6392\u5e8f\u7684\u7cbe\u786e\u6027\u6709\u66f4\u9ad8\u8981\u6c42\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 <strong><code>utf8_unicode_ci<\/code><\/strong> \u6216\u5176\u4ed6\u4e13\u95e8\u9488\u5bf9\u8bed\u8a00\u7684\u6392\u5e8f\u89c4\u5219\uff08\u5982 <code>utf8_german_ci<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u6392\u5e8f\u89c4\u5219\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>create database usersdb default charset utf8 collate ut [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-601","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/comments?post=601"}],"version-history":[{"count":1,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/601\/revisions"}],"predecessor-version":[{"id":602,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/601\/revisions\/602"}],"wp:attachment":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/media?parent=601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/categories?post=601"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/tags?post=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}