{"id":78414,"date":"2024-10-16T11:52:17","date_gmt":"2024-10-16T03:52:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/78414\/"},"modified":"2024-10-16T11:52:17","modified_gmt":"2024-10-16T03:52:17","slug":"mysql%e6%8c%87%e4%bb%a4-enum%ef%bc%88%e6%9e%9a%e8%88%89%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/78414\/","title":{"rendered":"MySQL\u6307\u4ee4: ENUM\uff08\u679a\u8209\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-enum%ef%bc%88%e6%9e%9a%e8%88%89%ef%bc%89-cPuORYLZpg\">MySQL\u6307\u4ee4: ENUM\uff08\u679a\u8209\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662fENUM\uff08\u679a\u8209\uff09\u3002ENUM\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b57\u7b26\u4e32\u6578\u64da\u985e\u578b\uff0c\u5141\u8a31\u7528\u6236\u5b9a\u7fa9\u4e00\u7d44\u9810\u5148\u6307\u5b9a\u7684\u503c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eENUM\u7684\u7279\u6027\u3001\u4f7f\u7528\u5834\u666f\u53ca\u5176\u512a\u7f3a\u9ede\u3002<\/p>\n<h2 id=\"enum%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-cPuORYLZpg\">ENUM\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>ENUM\u6578\u64da\u985e\u578b\u5141\u8a31\u7528\u6236\u5728\u8868\u4e2d\u5b9a\u7fa9\u4e00\u7d44\u6709\u9650\u7684\u5b57\u7b26\u4e32\u503c\u3002\u6bcf\u500bENUM\u5b57\u6bb5\u53ea\u80fd\u5b58\u5132\u9019\u4e9b\u9810\u5b9a\u7fa9\u503c\u4e2d\u7684\u4e00\u500b\u3002\u9019\u4f7f\u5f97ENUM\u7279\u5225\u9069\u5408\u7528\u65bc\u90a3\u4e9b\u503c\u7bc4\u570d\u6709\u9650\u4e14\u4e0d\u6703\u7d93\u5e38\u8b8a\u52d5\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u6027\u5225\u3001\u72c0\u614b\u6216\u985e\u5225\u7b49\u3002<\/p>\n<h3 id=\"enum%e7%9a%84%e8%aa%9e%e6%b3%95-cPuORYLZpg\">ENUM\u7684\u8a9e\u6cd5<\/h3>\n<p>\u5728MySQL\u4e2d\uff0c\u5b9a\u7fa9ENUM\u985e\u578b\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE example (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    status ENUM('active', 'inactive', 'pending') NOT NULL\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`status`\u5b57\u6bb5\u53ea\u80fd\u63a5\u53d7\u4e09\u500b\u503c\uff1a&#8217;active&#8217;\u3001&#8217;inactive&#8217;\u548c&#8217;pending&#8217;\u3002\u5982\u679c\u5617\u8a66\u63d2\u5165\u5176\u4ed6\u503c\uff0cMySQL\u5c07\u8fd4\u56de\u932f\u8aa4\u3002<\/p>\n<h2 id=\"enum%e7%9a%84%e5%84%aa%e9%bb%9e-cPuORYLZpg\">ENUM\u7684\u512a\u9ede<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u4f7f\u7528ENUM\u53ef\u4ee5\u78ba\u4fdd\u5b57\u6bb5\u53ea\u63a5\u53d7\u9810\u5b9a\u7fa9\u7684\u503c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u5b58\u5132\u6548\u7387\uff1a<\/strong>ENUM\u5728\u5b58\u5132\u6642\u4f7f\u7528\u6574\u6578\u4f86\u8868\u793a\u5b57\u7b26\u4e32\uff0c\u9019\u6a23\u53ef\u4ee5\u7bc0\u7701\u7a7a\u9593\uff0c\u7279\u5225\u662f\u5728\u5927\u91cf\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u6613\u65bc\u67e5\u8a62\uff1a<\/strong>ENUM\u985e\u578b\u7684\u5b57\u6bb5\u5728\u67e5\u8a62\u6642\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u5b57\u7b26\u4e32\u503c\uff0c\u9019\u4f7f\u5f97\u67e5\u8a62\u8a9e\u53e5\u66f4\u52a0\u76f4\u89c0\u3002<\/li>\n<\/ul>\n<h2 id=\"enum%e7%9a%84%e7%bc%ba%e9%bb%9e-cPuORYLZpg\">ENUM\u7684\u7f3a\u9ede<\/h2>\n<ul>\n<li><strong>\u9748\u6d3b\u6027\u4e0d\u8db3\uff1a<\/strong>\u5982\u679c\u9700\u8981\u6dfb\u52a0\u6216\u522a\u9664ENUM\u503c\uff0c\u5fc5\u9808\u4fee\u6539\u8868\u7d50\u69cb\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u5c0e\u81f4\u4e0d\u4fbf\u3002<\/li>\n<li><strong>\u6392\u5e8f\u554f\u984c\uff1a<\/strong>ENUM\u7684\u6392\u5e8f\u662f\u6839\u64da\u5b9a\u7fa9\u7684\u9806\u5e8f\uff0c\u800c\u4e0d\u662f\u5b57\u6bcd\u9806\u5e8f\uff0c\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7d50\u679c\u7684\u6392\u5e8f\u3002<\/li>\n<li><strong>\u4e0d\u652f\u6301\u591a\u8a9e\u8a00\uff1a<\/strong>ENUM\u7684\u503c\u662f\u56fa\u5b9a\u7684\uff0c\u5c0d\u65bc\u9700\u8981\u591a\u8a9e\u8a00\u652f\u6301\u7684\u61c9\u7528\uff0c\u53ef\u80fd\u4e0d\u592a\u9069\u5408\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8enum%e7%9a%84%e5%a0%b4%e6%99%af-cPuORYLZpg\">\u4f7f\u7528ENUM\u7684\u5834\u666f<\/h2>\n<p>ENUM\u7279\u5225\u9069\u5408\u7528\u65bc\u4ee5\u4e0b\u5834\u666f\uff1a<\/p>\n<ul>\n<li>\u72c0\u614b\u6a19\u8b58\uff1a\u4f8b\u5982\u7528\u65bc\u6a19\u8b58\u7528\u6236\u7684\u8a3b\u518a\u72c0\u614b\uff08\u5982&#8217;active&#8217;\u3001&#8217;inactive&#8217;\uff09\u3002<\/li>\n<li>\u985e\u5225\u5206\u985e\uff1a\u4f8b\u5982\u5546\u54c1\u985e\u5225\uff08\u5982&#8217;\u96fb\u5b50\u7522\u54c1&#8217;\u3001&#8217;\u670d\u88dd&#8217;\uff09\u3002<\/li>\n<li>\u6027\u5225\u6a19\u8b58\uff1a\u4f8b\u5982\u7528\u65bc\u6a19\u8b58\u7528\u6236\u6027\u5225\uff08\u5982&#8217;M&#8217;\u3001&#8217;F&#8217;\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8enum%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-cPuORYLZpg\">\u7bc4\u4f8b\uff1a\u4f7f\u7528ENUM\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u8868\uff0c\u4e26\u5e0c\u671b\u8a18\u9304\u7528\u6236\u7684\u8a3b\u518a\u72c0\u614b\u3002\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u8a2d\u8a08\u8868\u7d50\u69cb\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    registration_status ENUM('active', 'inactive', 'pending') NOT NULL\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u8868\u4e2d\uff0c`registration_status`\u5b57\u6bb5\u5c07\u5e6b\u52a9\u6211\u5011\u5feb\u901f\u4e86\u89e3\u6bcf\u500b\u7528\u6236\u7684\u72c0\u614b\uff0c\u4e26\u4e14\u5728\u67e5\u8a62\u6642\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u904e\u6ffe\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cPuORYLZpg\">\u7e3d\u7d50<\/h2>\n<p>ENUM\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u6578\u64da\u985e\u578b\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u9650\u5236\u503c\u7bc4\u570d\u7684\u5834\u666f\u3002\u96d6\u7136\u5b83\u5728\u9748\u6d3b\u6027\u548c\u591a\u8a9e\u8a00\u652f\u6301\u65b9\u9762\u5b58\u5728\u4e00\u4e9b\u9650\u5236\uff0c\u4f46\u5728\u6578\u64da\u5b8c\u6574\u6027\u548c\u5b58\u5132\u6548\u7387\u65b9\u9762\u537b\u8868\u73fe\u51fa\u8272\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u72c0\u614b\u6216\u985e\u5225\u7684\u61c9\u7528\uff0cENUM\u7121\u7591\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u7121\u8ad6\u662f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">VPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0cServer.HK\u90fd\u80fd\u63d0\u4f9b\u60a8\u6240\u9700\u7684\u652f\u6301\u548c\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u7684ENUM\uff08\u679a\u8209\uff09\u6307\u4ee4\uff0c\u5982\u4f55\u5b9a\u7fa9\u548c\u4f7f\u7528\u679a\u8209\u985e\u578b\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6578\u64da\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u6548\u7387\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-78414","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78414","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=78414"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78414\/revisions"}],"predecessor-version":[{"id":78415,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78414\/revisions\/78415"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=78414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=78414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=78414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}