{"id":154523,"date":"2024-11-02T16:31:19","date_gmt":"2024-11-02T08:31:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154523\/"},"modified":"2024-11-02T16:31:20","modified_gmt":"2024-11-02T08:31:20","slug":"%e5%b0%8d-mysql-%e5%ad%97%e7%ac%a6%e9%9b%86%e7%9a%84%e6%ad%a3%e7%a2%ba%e8%aa%8d%e8%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154523\/","title":{"rendered":"\u5c0d MySQL \u5b57\u7b26\u96c6\u7684\u6b63\u78ba\u8a8d\u8b58"},"content":{"rendered":"<h1 id=\"%e5%b0%8d-mysql-%e5%ad%97%e7%ac%a6%e9%9b%86%e7%9a%84%e6%ad%a3%e7%a2%ba%e8%aa%8d%e8%ad%98-qVfTUVHhbG\">\u5c0d MySQL \u5b57\u7b26\u96c6\u7684\u6b63\u78ba\u8a8d\u8b58<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u9078\u64c7\u548c\u914d\u7f6e\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u81f3\u95dc\u91cd\u8981\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7406\u89e3 MySQL \u7684\u5b57\u7b26\u96c6\u53ca\u5176\u6b63\u78ba\u914d\u7f6e\uff0c\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u6b63\u78ba\u5b58\u5132\u548c\u6aa2\u7d22\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%ad%97%e7%ac%a6%e9%9b%86%ef%bc%9f-qVfTUVHhbG\">\u4ec0\u9ebc\u662f\u5b57\u7b26\u96c6\uff1f<\/h2>\n<p>\u5b57\u7b26\u96c6\u662f\u6307\u4e00\u7d44\u5b57\u7b26\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u5b57\u7b26\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u6587\u672c\u6578\u64da\u3002\u5728 MySQL \u4e2d\uff0c\u5b57\u7b26\u96c6\u6c7a\u5b9a\u4e86\u6578\u64da\u5eab\u5982\u4f55\u5b58\u5132\u548c\u8655\u7406\u5b57\u7b26\u4e32\u6578\u64da\u3002\u6bcf\u500b\u5b57\u7b26\u96c6\u90fd\u6709\u4e00\u500b\u5c0d\u61c9\u7684\u6392\u5e8f\u898f\u5247\uff0c\u9019\u4e9b\u898f\u5247\u5f71\u97ff\u5230\u6578\u64da\u7684\u6bd4\u8f03\u548c\u6392\u5e8f\u3002<\/p>\n<h2 id=\"mysql-%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86%e9%a1%9e%e5%9e%8b-qVfTUVHhbG\">MySQL \u4e2d\u7684\u5b57\u7b26\u96c6\u985e\u578b<\/h2>\n<p>MySQL \u652f\u6301\u591a\u7a2e\u5b57\u7b26\u96c6\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u5b57\u7b26\u96c6\uff1a<\/p>\n<ul>\n<li><strong>utf8<\/strong>\uff1a\u9019\u662f\u4e00\u500b\u5e38\u7528\u7684\u5b57\u7b26\u96c6\uff0c\u652f\u6301\u5927\u591a\u6578\u8a9e\u8a00\u7684\u5b57\u7b26\uff0c\u4f46\u5be6\u969b\u4e0a\u5b83\u53ea\u652f\u6301\u6700\u591a\u4e09\u500b\u5b57\u7bc0\u7684\u5b57\u7b26\u3002<\/li>\n<li><strong>utf8mb4<\/strong>\uff1a\u9019\u662f utf8 \u7684\u64f4\u5c55\u7248\u672c\uff0c\u652f\u6301\u56db\u500b\u5b57\u7bc0\u7684\u5b57\u7b26\uff0c\u80fd\u5920\u8868\u793a\u6240\u6709 Unicode \u5b57\u7b26\uff0c\u5305\u62ec\u8868\u60c5\u7b26\u865f\u3002<\/li>\n<li><strong>latin1<\/strong>\uff1a\u9019\u662f\u4e00\u500b\u55ae\u5b57\u7bc0\u5b57\u7b26\u96c6\uff0c\u4e3b\u8981\u7528\u65bc\u897f\u6b50\u8a9e\u8a00\uff0c\u652f\u6301\u7684\u5b57\u7b26\u7bc4\u570d\u6709\u9650\u3002<\/li>\n<li><strong>ascii<\/strong>\uff1a\u9019\u662f\u4e00\u500b\u975e\u5e38\u57fa\u672c\u7684\u5b57\u7b26\u96c6\uff0c\u53ea\u652f\u6301\u82f1\u6587\u5b57\u6bcd\u548c\u4e00\u4e9b\u63a7\u5236\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86-qVfTUVHhbG\">\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6\u53d6\u6c7a\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002\u5982\u679c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u652f\u6301\u591a\u7a2e\u8a9e\u8a00\u6216\u7279\u6b8a\u5b57\u7b26\uff0c\u5efa\u8b70\u4f7f\u7528 <code>utf8mb4<\/code> \u5b57\u7b26\u96c6\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6240\u6709\u5b57\u7b26\u90fd\u80fd\u6b63\u78ba\u5b58\u5132\u548c\u986f\u793a\u3002<\/p>\n<h3 id=\"%e8%a8%ad%e7%bd%ae%e5%ad%97%e7%ac%a6%e9%9b%86%e7%9a%84%e6%ad%a5%e9%a9%9f-qVfTUVHhbG\">\u8a2d\u7f6e\u5b57\u7b26\u96c6\u7684\u6b65\u9a5f<\/h3>\n<p>\u5728 MySQL \u4e2d\u8a2d\u7f6e\u5b57\u7b26\u96c6\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\u5b8c\u6210\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u6578\u64da\u5eab\u6642\u6307\u5b9a\u5b57\u7b26\u96c6\nCREATE DATABASE my_database CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;\n\n-- \u5275\u5efa\u8868\u6642\u6307\u5b9a\u5b57\u7b26\u96c6\nCREATE TABLE my_table (\n    id INT PRIMARY KEY,\n    name VARCHAR(255) CHARACTER SET utf8mb4\n);\n\n-- \u4fee\u6539\u73fe\u6709\u8868\u7684\u5b57\u7b26\u96c6\nALTER TABLE my_table CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<h2 id=\"%e5%ad%97%e7%ac%a6%e9%9b%86%e7%9a%84%e5%bd%b1%e9%9f%bf-qVfTUVHhbG\">\u5b57\u7b26\u96c6\u7684\u5f71\u97ff<\/h2>\n<p>\u4e0d\u6b63\u78ba\u7684\u5b57\u7b26\u96c6\u914d\u7f6e\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u6216\u986f\u793a\u932f\u8aa4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u8868\u4f7f\u7528 <code>latin1<\/code> \u5b57\u7b26\u96c6\uff0c\u4f46\u63d2\u5165\u4e86\u5305\u542b Unicode \u5b57\u7b26\u7684\u6578\u64da\uff0c\u9019\u4e9b\u5b57\u7b26\u53ef\u80fd\u6703\u88ab\u622a\u65b7\u6216\u986f\u793a\u70ba\u554f\u865f\uff08?\uff09\u3002\u56e0\u6b64\uff0c\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u8a72\u4ed4\u7d30\u8003\u616e\u5b57\u7b26\u96c6\u7684\u9078\u64c7\u3002<\/p>\n<h2 id=\"%e5%ad%97%e7%ac%a6%e9%9b%86%e7%9a%84%e6%9f%a5%e8%a9%a2%e5%92%8c%e6%aa%a2%e6%9f%a5-qVfTUVHhbG\">\u5b57\u7b26\u96c6\u7684\u67e5\u8a62\u548c\u6aa2\u67e5<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u7576\u524d\u6578\u64da\u5eab\u548c\u8868\u7684\u5b57\u7b26\u96c6\uff1a<\/p>\n<pre><code>-- \u6aa2\u67e5\u7576\u524d\u6578\u64da\u5eab\u7684\u5b57\u7b26\u96c6\nSELECT DEFAULT_CHARACTER_SET_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME = 'my_database';\n\n-- \u6aa2\u67e5\u8868\u7684\u5b57\u7b26\u96c6\nSHOW TABLE STATUS LIKE 'my_table';<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qVfTUVHhbG\">\u7e3d\u7d50<\/h2>\n<p>\u5c0d\u65bc\u4f7f\u7528 MySQL \u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u6b63\u78ba\u8a8d\u8b58\u548c\u914d\u7f6e\u5b57\u7b26\u96c6\u662f\u78ba\u4fdd\u6578\u64da\u6b63\u78ba\u5b58\u5132\u548c\u6aa2\u7d22\u7684\u95dc\u9375\u3002\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6\uff0c\u5982 <code>utf8mb4<\/code>\uff0c\u53ef\u4ee5\u907f\u514d\u8a31\u591a\u6f5b\u5728\u7684\u554f\u984c\u3002\u4e86\u89e3\u5982\u4f55\u8a2d\u7f6e\u548c\u6aa2\u67e5\u5b57\u7b26\u96c6\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 MySQL \u5b57\u7b26\u96c6\u7684\u91cd\u8981\u6027\uff0c\u638c\u63e1\u6b63\u78ba\u914d\u7f6e\u8207\u4f7f\u7528\u65b9\u6cd5\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u6b63\u78ba\u5b58\u5132\u8207\u986f\u793a\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-154523","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=154523"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154523\/revisions"}],"predecessor-version":[{"id":154524,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154523\/revisions\/154524"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}