{"id":12858,"date":"2025-01-06T16:39:23","date_gmt":"2025-01-06T08:39:23","guid":{"rendered":"http:\/\/www.aiersheng.cc\/?p=12858"},"modified":"2025-01-06T16:39:23","modified_gmt":"2025-01-06T08:39:23","slug":"mysql-%e5%85%a8%e9%83%a8%e7%9f%a5%e8%af%86%e6%b1%87%e6%80%bb","status":"publish","type":"post","link":"https:\/\/www.aiersheng.cc\/?p=12858","title":{"rendered":"MySQL \u5168\u90e8\u77e5\u8bc6\u6c47\u603b"},"content":{"rendered":"<h3>MySQL \u5168\u90e8\u77e5\u8bc6\u6c47\u603b<\/h3>\n<p>MySQL \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\uff0c\u7531\u745e\u5178 MySQL AB \u516c\u53f8\u5f00\u53d1\uff0c\u73b0\u7531 Oracle \u516c\u53f8\u7ef4\u62a4\u3002MySQL \u662f\u76ee\u524d\u6700\u6d41\u884c\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u4e4b\u4e00\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e WEB \u5e94\u7528\u548c\u5404\u7c7b\u6570\u636e\u5e93\u5e94\u7528\u4e2d\u3002\u5b83\u652f\u6301\u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5982 Linux\u3001Windows\u3001macOS \u7b49\uff0c\u4e14\u5177\u6709\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u548c\u7075\u6d3b\u7684\u5b58\u50a8\u5f15\u64ce\u3002<\/p>\n<p>\u672c\u6587\u5c06\u4ece <strong>MySQL \u7684\u57fa\u7840\u77e5\u8bc6\u3001\u5b89\u88c5\u3001\u914d\u7f6e\u3001\u64cd\u4f5c\u547d\u4ee4\u3001\u67e5\u8be2\u4f18\u5316\u3001\u5907\u4efd\u6062\u590d\u3001\u5b89\u5168\u6027\u7b49\u65b9\u9762<\/strong> \u8fdb\u884c\u5168\u9762\u7684\u6c47\u603b\u3002<\/p>\n<hr \/>\n<h3>1. MySQL \u7b80\u4ecb<\/h3>\n<p>MySQL \u662f\u4e00\u4e2a\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\uff0c\u7528\u4e8e\u5b58\u50a8\u3001\u7ba1\u7406\u548c\u68c0\u7d22\u6570\u636e\u3002\u5b83\u652f\u6301\u591a\u79cd\u5b58\u50a8\u5f15\u64ce\uff0c\u5e38\u89c1\u7684\u5982 <strong>InnoDB<\/strong>\uff08\u652f\u6301\u4e8b\u52a1\u548c\u5916\u952e\uff09\u548c <strong>MyISAM<\/strong>\uff08\u9002\u7528\u4e8e\u9ad8\u6027\u80fd\u67e5\u8be2\u573a\u666f\uff09\u3002<\/p>\n<ul>\n<li><strong>MySQL \u7684\u7279\u70b9\uff1a<\/strong>\n<ul>\n<li><strong>\u5f00\u6e90<\/strong>\uff1aMySQL \u662f\u514d\u8d39\u7684\uff0c\u7b26\u5408 GPL \u534f\u8bae\u3002<\/li>\n<li><strong>\u9ad8\u6027\u80fd<\/strong>\uff1aMySQL \u63d0\u4f9b\u591a\u79cd\u4f18\u5316\u65b9\u6848\uff0c\u652f\u6301\u590d\u6742\u67e5\u8be2\u3002<\/li>\n<li><strong>\u8de8\u5e73\u53f0<\/strong>\uff1a\u652f\u6301\u5728\u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u8fd0\u884c\u3002<\/li>\n<li><strong>\u591a\u7528\u6237\u652f\u6301<\/strong>\uff1aMySQL \u652f\u6301\u591a\u4e2a\u7528\u6237\u7684\u5e76\u53d1\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027<\/strong>\uff1aMySQL \u63d0\u4f9b\u5b8c\u5584\u7684\u6743\u9650\u7ba1\u7406\u548c\u52a0\u5bc6\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>2. MySQL \u5b89\u88c5<\/h3>\n<h4>2.1 \u5728 Linux\uff08Ubuntu 22.04\uff09\u4e0a\u5b89\u88c5 MySQL<\/h4>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">sudo apt update<br \/>\nsudo apt install mysql-server<br \/>\nsudo systemctl start mysql<br \/>\nsudo systemctl <span class=\"hljs-built_in\">enable<\/span> mysql<br \/>\n<\/code><\/div>\n<\/div>\n<h4>2.2 \u5728 Windows \u4e0a\u5b89\u88c5 MySQL<\/h4>\n<ol>\n<li>\u4e0b\u8f7d MySQL \u5b89\u88c5\u5305 <a href=\"https:\/\/dev.mysql.com\/downloads\/installer\/\" target=\"_new\" rel=\"noopener\">MySQL \u5b98\u65b9\u4e0b\u8f7d\u9875<\/a>\uff0c\u9009\u62e9\u9002\u5408\u7684\u7248\u672c\u3002<\/li>\n<li>\u542f\u52a8\u5b89\u88c5\u7a0b\u5e8f\uff0c\u5e76\u6309\u7167\u5411\u5bfc\u6b65\u9aa4\u5b8c\u6210\u5b89\u88c5\u3002<\/li>\n<li>\u8bbe\u7f6e MySQL \u6839\u7528\u6237\u5bc6\u7801\u5e76\u5b8c\u6210\u914d\u7f6e\u3002<\/li>\n<\/ol>\n<h4>2.3 \u914d\u7f6e MySQL<\/h4>\n<ul>\n<li><strong>\u4fee\u6539 root \u5bc6\u7801\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">sudo mysql_secure_installation<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u8bbe\u7f6e MySQL \u5f00\u673a\u81ea\u542f\u52a8\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">sudo systemctl <span class=\"hljs-built_in\">enable<\/span> mysql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>3. MySQL \u6570\u636e\u5e93\u7ba1\u7406\u547d\u4ee4<\/h3>\n<h4>3.1 \u5e38\u7528\u6570\u636e\u5e93\u64cd\u4f5c\u547d\u4ee4<\/h4>\n<ul>\n<li><strong>\u663e\u793a\u6240\u6709\u6570\u636e\u5e93\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> DATABASES;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u521b\u5efa\u6570\u636e\u5e93\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> DATABASE database_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u5220\u9664\u6570\u636e\u5e93\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DROP<\/span> DATABASE database_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u9009\u62e9\u6570\u636e\u5e93\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\">USE database_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>3.2 \u8868\u64cd\u4f5c\u547d\u4ee4<\/h4>\n<ul>\n<li><strong>\u663e\u793a\u6240\u6709\u8868\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> TABLES;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u521b\u5efa\u8868\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> table_name (<br \/>\n    column1 datatype,<br \/>\n    column2 datatype,<br \/>\n    ...<br \/>\n);<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u5220\u9664\u8868\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DROP<\/span> <span class=\"hljs-keyword\">TABLE<\/span> table_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u67e5\u770b\u8868\u7ed3\u6784\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DESCRIBE<\/span> table_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>3.3 \u6570\u636e\u64cd\u4f5c\u547d\u4ee4<\/h4>\n<ul>\n<li><strong>\u63d2\u5165\u6570\u636e\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> table_name (column1, column2, ...)<br \/>\n<span class=\"hljs-keyword\">VALUES<\/span> (value1, value2, ...);<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u67e5\u8be2\u6570\u636e\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u66f4\u65b0\u6570\u636e\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">UPDATE<\/span> table_name<br \/>\n<span class=\"hljs-keyword\">SET<\/span> column1 <span class=\"hljs-operator\">=<\/span> value1, column2 <span class=\"hljs-operator\">=<\/span> value2<br \/>\n<span class=\"hljs-keyword\">WHERE<\/span> <span class=\"hljs-keyword\">condition<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u5220\u9664\u6570\u636e\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DELETE<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name <span class=\"hljs-keyword\">WHERE<\/span> <span class=\"hljs-keyword\">condition<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>4. MySQL \u67e5\u8be2\u4f18\u5316<\/h3>\n<h4>4.1 \u7d22\u5f15\u4f18\u5316<\/h4>\n<ul>\n<li><strong>\u521b\u5efa\u7d22\u5f15\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> INDEX index_name <span class=\"hljs-keyword\">ON<\/span> table_name (column_name);<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u5220\u9664\u7d22\u5f15\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DROP<\/span> INDEX index_name <span class=\"hljs-keyword\">ON<\/span> table_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u67e5\u770b\u7d22\u5f15\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> INDEXES <span class=\"hljs-keyword\">FROM<\/span> table_name;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>4.2 \u67e5\u8be2\u4f18\u5316\u6280\u5de7<\/h4>\n<ul>\n<li>\u4f7f\u7528 <strong>EXPLAIN<\/strong> \u6765\u5206\u6790\u67e5\u8be2\u6267\u884c\u8ba1\u5212\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\">EXPLAIN <span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name <span class=\"hljs-keyword\">WHERE<\/span> column_name <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">'value'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li>\u907f\u514d\u4f7f\u7528 **SELECT ***\uff0c\u5c3d\u91cf\u53ea\u67e5\u8be2\u9700\u8981\u7684\u5217\u3002<\/li>\n<li>\u4f7f\u7528 <strong>LIMIT<\/strong> \u9650\u5236\u8fd4\u56de\u7ed3\u679c\u6570\u91cf\u3002<\/li>\n<li>\u5bf9\u5e38\u7528\u67e5\u8be2\u5b57\u6bb5\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<li>\u4f7f\u7528 <strong>JOIN<\/strong> \u4ee3\u66ff <strong>\u5b50\u67e5\u8be2<\/strong>\uff0c\u5c24\u5176\u5728\u5173\u8054\u6570\u636e\u65f6\u3002<\/li>\n<\/ul>\n<h4>4.3 \u6162\u67e5\u8be2\u65e5\u5fd7<\/h4>\n<ul>\n<li>\u542f\u7528\u6162\u67e5\u8be2\u65e5\u5fd7\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SET<\/span> <span class=\"hljs-keyword\">GLOBAL<\/span> slow_query_log <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">1<\/span>;<br \/>\n<span class=\"hljs-keyword\">SET<\/span> <span class=\"hljs-keyword\">GLOBAL<\/span> long_query_time <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">2<\/span>;  <span class=\"hljs-comment\">-- \u8bbe\u7f6e\u8d85\u8fc72\u79d2\u7684\u67e5\u8be2\u4e3a\u6162\u67e5\u8be2<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li>\u67e5\u770b\u6162\u67e5\u8be2\u65e5\u5fd7\u6587\u4ef6\u4f4d\u7f6e\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> VARIABLES <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'slow_query_log_file'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>5. MySQL \u5b89\u5168\u6027<\/h3>\n<h4>5.1 \u7528\u6237\u7ba1\u7406<\/h4>\n<ul>\n<li><strong>\u521b\u5efa\u7528\u6237\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">USER<\/span> <span class=\"hljs-string\">'username'<\/span>@<span class=\"hljs-string\">'hostname'<\/span> IDENTIFIED <span class=\"hljs-keyword\">BY<\/span> <span class=\"hljs-string\">'password'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u5220\u9664\u7528\u6237\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">DROP<\/span> <span class=\"hljs-keyword\">USER<\/span> <span class=\"hljs-string\">'username'<\/span>@<span class=\"hljs-string\">'hostname'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u6388\u4e88\u6743\u9650\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">GRANT<\/span> <span class=\"hljs-keyword\">ALL<\/span> PRIVILEGES <span class=\"hljs-keyword\">ON<\/span> database_name.<span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">TO<\/span> <span class=\"hljs-string\">'username'<\/span>@<span class=\"hljs-string\">'hostname'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u64a4\u9500\u6743\u9650\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">REVOKE<\/span> <span class=\"hljs-keyword\">ALL<\/span> PRIVILEGES <span class=\"hljs-keyword\">ON<\/span> database_name.<span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> <span class=\"hljs-string\">'username'<\/span>@<span class=\"hljs-string\">'hostname'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u67e5\u770b\u7528\u6237\u6743\u9650\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> GRANTS <span class=\"hljs-keyword\">FOR<\/span> <span class=\"hljs-string\">'username'<\/span>@<span class=\"hljs-string\">'hostname'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>5.2 \u6570\u636e\u5e93\u5907\u4efd\u4e0e\u6062\u590d<\/h4>\n<ul>\n<li><strong>\u5907\u4efd\u6570\u636e\u5e93\uff1a<\/strong> \u4f7f\u7528 <code>mysqldump<\/code> \u5de5\u5177\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">mysqldump -u username -p database_name &gt; backup_file.sql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u6062\u590d\u6570\u636e\u5e93\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">mysql -u username -p database_name &lt; backup_file.sql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>5.3 \u52a0\u5bc6\u548c\u5b89\u5168\u8bbe\u7f6e<\/h4>\n<ul>\n<li>\u542f\u7528 SSL \u52a0\u5bc6\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">SHOW<\/span> VARIABLES <span class=\"hljs-keyword\">LIKE<\/span> <span class=\"hljs-string\">'%ssl%'<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li>\u914d\u7f6e\u52a0\u5bc6\u5b58\u50a8\u5f15\u64ce\uff0c\u5982 <strong>TDE<\/strong>\uff08\u900f\u660e\u6570\u636e\u52a0\u5bc6\uff09\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>6. MySQL \u5b58\u50a8\u5f15\u64ce<\/h3>\n<p>MySQL \u652f\u6301\u591a\u79cd\u5b58\u50a8\u5f15\u64ce\uff0c\u4ee5\u4e0b\u662f\u5e38\u7528\u7684\u51e0\u79cd\uff1a<\/p>\n<h4>6.1 InnoDB<\/h4>\n<ul>\n<li>\u652f\u6301 <strong>\u4e8b\u52a1<\/strong>\uff0c<strong>ACID<\/strong> \u539f\u5219\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5f3a\u4e00\u81f4\u6027\u548c\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u3002<\/li>\n<li>\u652f\u6301 <strong>\u5916\u952e\u7ea6\u675f<\/strong>\uff0c\u9002\u7528\u4e8e\u6570\u636e\u5173\u7cfb\u590d\u6742\u7684\u5e94\u7528\u3002<\/li>\n<li>\u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce\u3002<\/li>\n<\/ul>\n<h4>6.2 MyISAM<\/h4>\n<ul>\n<li>\u975e\u4e8b\u52a1\u6027\u5b58\u50a8\u5f15\u64ce\uff0c\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u5e94\u7528\u3002<\/li>\n<li>\u63d0\u4f9b\u4e86\u8f83\u597d\u7684\u67e5\u8be2\u6027\u80fd\uff0c\u4f46\u4e0d\u652f\u6301\u4e8b\u52a1\u548c\u5916\u952e\u3002<\/li>\n<\/ul>\n<h4>6.3 MEMORY<\/h4>\n<ul>\n<li>\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u7684\u8868\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u67e5\u8be2\u7684\u5c0f\u578b\u6570\u636e\u96c6\u3002<\/li>\n<li>\u6570\u636e\u5728\u670d\u52a1\u5668\u91cd\u542f\u540e\u4e22\u5931\u3002<\/li>\n<\/ul>\n<h4>6.4 NDB (Cluster)<\/h4>\n<ul>\n<li>\u9ad8\u53ef\u7528\u6027\u548c\u5206\u5e03\u5f0f\u5b58\u50a8\uff0c\u9002\u7528\u4e8e\u5927\u578b\u5206\u5e03\u5f0f\u5e94\u7528\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>7. MySQL \u9ad8\u53ef\u7528\u6027\u4e0e\u96c6\u7fa4<\/h3>\n<h4>7.1 \u4e3b\u4ece\u590d\u5236<\/h4>\n<p>MySQL \u7684\u4e3b\u4ece\u590d\u5236\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u9ad8\u53ef\u7528\u6027\u65b9\u6848\uff0c\u7528\u4e8e\u6570\u636e\u7684\u5907\u4efd\u548c\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n<ul>\n<li><strong>\u4e3b\u670d\u52a1\u5668\u914d\u7f6e\uff1a<\/strong> \u4fee\u6539 <code>my.cnf<\/code> \u6587\u4ef6\uff0c\u542f\u7528\u4e8c\u8fdb\u5236\u65e5\u5fd7\uff1a\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">ini<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-ini\"><span class=\"hljs-section\">[mysqld]<\/span><br \/>\n<span class=\"hljs-attr\">log-bin<\/span> = \/var\/log\/mysql\/mysql-bin.log<br \/>\n<span class=\"hljs-attr\">server-id<\/span> = <span class=\"hljs-number\">1<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u4ece\u670d\u52a1\u5668\u914d\u7f6e\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">ini<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-ini\"><span class=\"hljs-section\">[mysqld]<\/span><br \/>\n<span class=\"hljs-attr\">server-id<\/span> = <span class=\"hljs-number\">2<\/span><br \/>\n<span class=\"hljs-attr\">replicate-do-db<\/span> = database_name<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>7.2 Percona XtraDB Cluster<\/h4>\n<p>Percona XtraDB Cluster \u662f\u57fa\u4e8e Galera \u534f\u8bae\u7684 MySQL \u9ad8\u53ef\u7528\u96c6\u7fa4\u89e3\u51b3\u65b9\u6848\uff0c\u652f\u6301\u591a\u4e3b\u8282\u70b9\u5e76\u63d0\u4f9b\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u3002<\/p>\n<hr \/>\n<h3>8. MySQL \u5907\u4efd\u4e0e\u6062\u590d<\/h3>\n<h4>8.1 \u4f7f\u7528 <code>mysqldump<\/code> \u8fdb\u884c\u5907\u4efd<\/h4>\n<ul>\n<li><strong>\u5168\u91cf\u5907\u4efd\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">mysqldump -u username -p --all-databases &gt; all_databases_backup.sql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u6307\u5b9a\u6570\u636e\u5e93\u5907\u4efd\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">mysqldump -u username -p database_name &gt; database_name_backup.sql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>8.2 \u6062\u590d\u6570\u636e\u5e93<\/h4>\n<ul>\n<li><strong>\u6062\u590d\u5907\u4efd\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">bash<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-bash\">mysql -u username -p database_name &lt; backup_file.sql<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>8.3 \u4f7f\u7528 <code>Xtrabackup<\/code> \u8fdb\u884c\u7269\u7406\u5907\u4efd<\/h4>\n<ul>\n<li><code>Xtrabackup<\/code> \u662f Percona \u63d0\u4f9b\u7684\u5f00\u6e90\u70ed\u5907\u4efd\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u6062\u590d\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>9. MySQL \u6027\u80fd\u8c03\u4f18<\/h3>\n<h4>9.1 \u914d\u7f6e\u4f18\u5316<\/h4>\n<ul>\n<li><strong>\u589e\u52a0\u7f13\u5b58\uff1a<\/strong>\n<ul>\n<li><code>innodb_buffer_pool_size<\/code>\uff1a\u7528\u4e8e\u7f13\u5b58 InnoDB \u6570\u636e\u9875\u3002<\/li>\n<li><code>query_cache_size<\/code>\uff1a\u7f13\u5b58\u67e5\u8be2\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>9.2 \u67e5\u8be2\u4f18\u5316<\/h4>\n<ul>\n<li>\u4f7f\u7528\u5408\u9002\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u5206\u6790\u6267\u884c\u8ba1\u5212\u5e76\u4f18\u5316\u6162\u67e5\u8be2\u3002<\/li>\n<li>\u8c03\u6574 MySQL \u914d\u7f6e\u6587\u4ef6\uff0c\u589e\u52a0\u8fde\u63a5\u6570\u548c\u7f13\u5b58\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>10. MySQL \u4e8b\u52a1<\/h3>\n<h4>10.1 \u4e8b\u52a1\u7ba1\u7406\u547d\u4ee4<\/h4>\n<ul>\n<li><strong>\u5f00\u542f\u4e8b\u52a1\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">START<\/span> TRANSACTION;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u63d0\u4ea4\u4e8b\u52a1\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">COMMIT<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<li><strong>\u56de\u6eda\u4e8b\u52a1\uff1a<\/strong>\n<div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950\">\n<div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none\">sql<\/div>\n<div class=\"sticky top-9 md:top-[5.75rem]\">\n<div class=\"absolute bottom-0 right-2 flex h-9 items-center\">\n<div class=\"flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary\"><span class=\"\" data-state=\"closed\"><button class=\"flex gap-1 items-center select-none py-1\" aria-label=\"\u590d\u5236\">\u590d\u5236\u4ee3\u7801<\/button><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-sql\"><span class=\"hljs-keyword\">ROLLBACK<\/span>;<br \/>\n<\/code><\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h4>10.2 \u4e8b\u52a1\u9694\u79bb\u7ea7\u522b<\/h4>\n<p>MySQL \u652f\u6301 4 \u79cd\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n<ol>\n<li><strong>READ UNCOMMITTED<\/strong>\uff1a\u5141\u8bb8\u810f\u8bfb\u3002<\/li>\n<li><strong>READ COMMITTED<\/strong>\uff1a\u5141\u8bb8\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<li><strong>REPEATABLE READ<\/strong>\uff1a\u9ed8\u8ba4\u7ea7\u522b\uff0c\u9632\u6b62\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<li><strong>SERIALIZABLE<\/strong>\uff1a\u6700\u9ad8\u7ea7\u522b\uff0c\u9632\u6b62\u5e7b\u8bfb\u3002<\/li>\n<\/ol>\n<hr \/>\n<h3>\u603b\u7ed3<\/h3>\n<p>MySQL \u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u3001\u5e7f\u6cdb\u5e94\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u652f\u6301\u9ad8\u5e76\u53d1\u3001\u9ad8\u53ef\u9760\u6027\u7684\u5e94\u7528\u9700\u6c42\u3002\u672c\u6587\u8986\u76d6\u4e86 MySQL \u7684\u57fa\u672c\u64cd\u4f5c\u3001\u6027\u80fd\u4f18\u5316\u3001\u5907\u4efd\u6062\u590d\u3001\u5b89\u5168\u6027\u7ba1\u7406\u3001\u9ad8\u53ef\u7528\u6027\u914d\u7f6e\u7b49\u591a\u4e2a\u65b9\u9762\uff0c\u5e0c\u671b\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u548c\u7ba1\u7406\u5458\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u4f18\u5316 MySQL \u6570\u636e\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5168\u90e8\u77e5\u8bc6\u6c47\u603b MySQL \u662f&#8230;<\/p>\n","protected":false},"author":1,"featured_media":12859,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-12858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zzjy"],"_links":{"self":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts\/12858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12858"}],"version-history":[{"count":0,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts\/12858\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/media\/12859"}],"wp:attachment":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}