{"id":199,"date":"2026-03-27T20:41:15","date_gmt":"2026-03-27T12:41:15","guid":{"rendered":"https:\/\/codergodv.xyz\/?p=199"},"modified":"2026-03-27T20:41:16","modified_gmt":"2026-03-27T12:41:16","slug":"mysql%e7%b4%a2%e5%bc%95%e7%89%b9%e6%80%a7","status":"publish","type":"post","link":"https:\/\/codergodv.xyz\/index.php\/2026\/03\/27\/mysql%e7%b4%a2%e5%bc%95%e7%89%b9%e6%80%a7\/","title":{"rendered":"MySQL\u7d22\u5f15\u7279\u6027"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">MySQL\u7d22\u5f15\u7279\u6027<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d22\u5f15\u7684\u6982\u5ff5<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7d22\u5f15\u7684\u6982\u5ff5<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93\u8868\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u90fd\u662f\u4ee5\u8bb0\u5f55\u4e3a\u5355\u4f4d\u7684\uff0c\u5982\u679c\u5728\u67e5\u8be2\u6570\u636e\u65f6\u76f4\u63a5\u4e00\u6761\u6761\u904d\u5386\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\uff0c\u90a3\u4e48\u67e5\u8be2\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u5c06\u4f1a\u662f<code>O(n)<\/code>\u3002<\/li>\n\n\n\n<li>\u7d22\u5f15\u7684\u4ef7\u503c\u5728\u4e8e\u63d0\u9ad8\u6d77\u91cf\u6570\u636e\u7684\u68c0\u7d22\u901f\u5ea6\uff0c\u53ea\u8981\u6267\u884c\u4e86\u6b63\u786e\u7684\u521b\u5efa\u7d22\u5f15\u7684\u64cd\u4f5c\uff0c\u67e5\u8be2\u901f\u5ea6\u5c31\u53ef\u80fd\u63d0\u9ad8\u6210\u767e\u4e0a\u5343\u500d\u3002\u5f53\u4e00\u5f20\u8868\u521b\u5efa\u7d22\u5f15\u540e\uff0c\u5728\u6570\u636e\u5e93\u5e95\u5c42\u5c31\u4f1a\u4e3a\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u6784\u5efa\u7279\u5b9a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u540e\u7eed\u5728\u67e5\u8be2\u8868\u4e2d\u6570\u636e\u65f6\u5c31\u80fd\u901a\u8fc7\u67e5\u8be2\u8be5\u6570\u636e\u7ed3\u6784\u5feb\u901f\u5b9a\u4f4d\u5230\u76ee\u6807\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u7d22\u5f15\u867d\u7136\u63d0\u9ad8\u4e86\u6570\u636e\u7684\u67e5\u8be2\u901f\u5ea6\uff0c\u4f46\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4e5f\u4f1a\u964d\u4f4e\u6570\u636e\u589e\u5220\u6539\u7684\u6548\u7387\uff0c\u56e0\u4e3a\u8fd9\u65f6\u5728\u5bf9\u8868\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u589e\u5220\u6539\u64cd\u4f5c\u65f6\uff0c\u9664\u4e86\u9700\u8981\u8fdb\u884c\u5bf9\u5e94\u7684\u589e\u5220\u6539\u64cd\u4f5c\u4e4b\u5916\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u5bf9\u5e95\u5c42\u5efa\u7acb\u7684\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u8c03\u6574\u7ef4\u62a4\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5e38\u89c1\u7684\u7d22\u5f15\u5206\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u952e\u7d22\u5f15\uff08primary key\uff09\u3002<\/li>\n\n\n\n<li>\u552f\u4e00\u7d22\u5f15\uff08unique\uff09\u3002<\/li>\n\n\n\n<li>\u666e\u901a\u7d22\u5f15\uff08index\uff09\u3002<\/li>\n\n\n\n<li>\u5168\u6587\u7d22\u5f15\uff08fulltext\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7d22\u5f15\u7684\u4ef7\u503c<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528\u5982\u4e0bSQL\u521b\u5efa\u4e00\u4e2a\u6d77\u91cf\u6570\u636e\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>drop database if exists `index_demon`;\ncreate database if not exists `index_demon` default character set utf8;\nuse `index_demon`;\n\n-- \u6784\u5efa\u4e00\u4e2a8000000\u6761\u8bb0\u5f55\u7684\u6570\u636e\n-- \u6784\u5efa\u7684\u6d77\u91cf\u8868\u6570\u636e\u9700\u8981\u6709\u5dee\u5f02\u6027\uff0c\u6240\u4ee5\u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b\u6765\u521b\u5efa\n\n-- \u4ea7\u751f\u968f\u673a\u5b57\u7b26\u4e32\ndelimiter $$\ncreate function rand_string(n INT)\nreturns varchar(255)\nbegin\ndeclare chars_str varchar(100) default\n'abcdefghijklmnopqrstuvwxyzABCDEFJHIJKLMNOPQRSTUVWXYZ';\ndeclare return_str varchar(255) default '';\ndeclare i int default 0;\nwhile i &lt; n do\nset return_str =concat(return_str,substring(chars_str,floor(1+rand()*52),1));\nset i = i + 1;\nend while;\nreturn return_str;\nend $$\ndelimiter ;\n\n-- \u4ea7\u751f\u968f\u673a\u6570\u5b57\ndelimiter $$\ncreate function rand_num( )\nreturns int(5)\nbegin\ndeclare i int default 0;\nset i = floor(10+rand()*500);\nreturn i;\nend $$\ndelimiter ;\n\n-- \u521b\u5efa\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5411\u96c7\u5458\u8868\u6dfb\u52a0\u6d77\u91cf\u6570\u636e\ndelimiter $$\ncreate procedure insert_emp(in start int(10),in max_num int(10))\nbegin\ndeclare i int default 0;\nset autocommit = 0;\nrepeat\nset i = i + 1;\ninsert into EMP values ((start+i)\n,rand_string(6),'SALESMAN',0001,curdate(),2000,400,rand_num());\nuntil i = max_num\nend repeat;\ncommit;\nend $$\ndelimiter ;\n\n-- \u96c7\u5458\u8868\nCREATE TABLE `EMP` (\n  `empno` int(6) unsigned zerofill NOT NULL COMMENT '\u96c7\u5458\u7f16\u53f7',\n  `ename` varchar(10) DEFAULT NULL COMMENT '\u96c7\u5458\u59d3\u540d',\n  `job` varchar(9) DEFAULT NULL COMMENT '\u96c7\u5458\u804c\u4f4d',\n  `mgr` int(4) unsigned zerofill DEFAULT NULL COMMENT '\u96c7\u5458\u9886\u5bfc\u7f16\u53f7',\n  `hiredate` datetime DEFAULT NULL COMMENT '\u96c7\u4f63\u65f6\u95f4',\n  `sal` decimal(7,2) DEFAULT NULL COMMENT '\u5de5\u8d44\u6708\u85aa',\n  `comm` decimal(7,2) DEFAULT NULL COMMENT '\u5956\u91d1',\n  `deptno` int(2) unsigned zerofill DEFAULT NULL COMMENT '\u90e8\u95e8\u7f16\u53f7'\n);\n\n-- \u6267\u884c\u5b58\u50a8\u8fc7\u7a0b\uff0c\u6dfb\u52a08000000\u6761\u8bb0\u5f55\ncall insert_emp(100001, 8000000);<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8ff0SQL\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3aindex_demon\u7684\u6570\u636e\u5e93\uff0c\u5728\u8be5\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3aEMP\u7684\u5458\u5de5\u8868\uff0c\u5e76\u5411\u8868\u5f53\u4e2d\u63d2\u5165\u4e86\u516b\u767e\u4e07\u6761\u8bb0\u5f55\u3002<\/p>\n\n\n\n<p>\u5c06\u4e0a\u8ff0SQL\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\u5728MySQL\u4e2d\u4f7f\u7528source\u547d\u4ee4\u4f9d\u6b21\u6267\u884c\u6587\u4ef6\u4e2d\u7684SQL\u5373\u53ef\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/0b8d36ad6f6744769157ef4ae7440531.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/0b8d36ad6f6744769157ef4ae7440531.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>SQL\u6267\u884c\u5b8c\u6bd5\u540e\u67e5\u770b\u6570\u636e\u5e93\u5c31\u80fd\u770b\u5230\u4e00\u4e2a\u540d\u4e3aindex_demon\u7684\u6570\u636e\u5e93\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/c5f351b66779453e8f697dd30acca974.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c5f351b66779453e8f697dd30acca974.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u8fdb\u5165\u8be5\u6570\u636e\u5e93\uff0c\u5728\u6570\u636e\u5e93\u4e2d\u53ef\u4ee5\u770b\u5230\u4e00\u4e2a\u540d\u4e3aEMP\u7684\u5458\u5de5\u8868\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/8298b5bfdb644eb681414cb91089e52a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/8298b5bfdb644eb681414cb91089e52a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u7531\u4e8eEMP\u8868\u4e2d\u6709\u516b\u767e\u4e07\u6761\u8bb0\u5f55\uff0c\u56e0\u6b64\u5728\u67e5\u770bEMP\u8868\u4e2d\u7684\u6570\u636e\u65f6\u53ef\u4ee5\u5e26\u4e0alimit\u5b50\u53e5\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/23de98650d954e2980ac01692524b395.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/23de98650d954e2980ac01692524b395.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u901a\u8fc7desc\u547d\u4ee4\u53ef\u4ee5\u770b\u5230\uff0c\u76ee\u524dEMP\u5458\u5de5\u8868\u4e2d\u6ca1\u6709\u5efa\u7acb\u4efb\u4f55\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/49d7911cd7204965aaad7aceb2c4d845.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/49d7911cd7204965aaad7aceb2c4d845.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u67e5\u8be2EMP\u8868\u4e2d\u6307\u5b9a\u5de5\u53f7\u7684\u5458\u5de5\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u6b21\u67e5\u8be2\u8fc7\u7a0b\u90fd\u9700\u8981\u82b1\u8d394.5\u79d2\u5de6\u53f3\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/c5291b857c674dc2a9643ea3d3a9afcc.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c5291b857c674dc2a9643ea3d3a9afcc.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53\u6211\u4eec\u7ed9\u5458\u5de5\u8868\u4e2d\u7684\u5de5\u53f7\u5efa\u7acb\u7d22\u5f15\u540e\uff0c\u6570\u636e\u5e93\u5e95\u5c42\u5c31\u4f1a\u4e3a\u5458\u5de5\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u6784\u5efa\u7279\u5b9a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u5f53\u524d\u5458\u5de5\u8868\u4e2d\u7684\u6570\u636e\u91cf\u8f83\u5927\uff0c\u56e0\u6b64\u5efa\u7acb\u7d22\u5f15\u65f6\u4e5f\u9700\u8981\u82b1\u8d39\u8f83\u957f\u65f6\u95f4\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/563ced88202b48a6a109de5c9b43367b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/563ced88202b48a6a109de5c9b43367b.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u65f6\u518d\u67e5\u8be2EMP\u8868\u4e2d\u6307\u5b9a\u5de5\u53f7\u7684\u5458\u5de5\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u51e0\u4e4e\u68c0\u6d4b\u4e0d\u5230\u67e5\u8be2\u65f6\u8017\u8d39\u7684\u65f6\u95f4\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/0d84d7ea89254a4580e65956c7c3f1eb.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/0d84d7ea89254a4580e65956c7c3f1eb.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6839\u672c\u539f\u56e0\u5c31\u662f\uff0c\u7ed9\u5458\u5de5\u5de5\u53f7\u521b\u5efa\u7d22\u5f15\u540e\u518d\u6839\u636e\u5458\u5de5\u5de5\u53f7\u6765\u67e5\u8be2\u6570\u636e\uff0c\u8fd9\u65f6\u5c31\u80fd\u591f\u76f4\u63a5\u901a\u8fc7\u5e95\u5c42\u5efa\u7acb\u7684\u6570\u636e\u7ed3\u6784\u6765\u5feb\u901f\u5b9a\u4f4d\u5230\u76ee\u6807\u6570\u636e\uff0c\u4ece\u800c\u63d0\u9ad8\u6570\u636e\u7684\u68c0\u7d22\u901f\u5ea6\uff0c\u8fd9\u5c31\u662f\u7d22\u5f15\u7684\u4ef7\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba4\u8bc6\u78c1\u76d8<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL\u7ed9\u7528\u6237\u63d0\u4f9b\u5b58\u50a8\u670d\u52a1\uff0c\u5b58\u50a8\u7684\u6570\u636e\u5728\u78c1\u76d8\u8fd9\u4e2a\u5916\u8bbe\u5f53\u4e2d\u3002<\/li>\n\n\n\n<li>\u78c1\u76d8\u662f\u8ba1\u7b97\u673a\u4e2d\u7684\u4e00\u4e2a\u673a\u68b0\u8bbe\u5907\uff0c\u76f8\u6bd4\u4e8e\u8ba1\u7b97\u673a\u7684\u5176\u4ed6\u7535\u5b50\u5143\u4ef6\uff0c\u78c1\u76d8\u7684\u6548\u7387\u662f\u6bd4\u8f83\u4f4e\u7684\u3002<\/li>\n\n\n\n<li>\u800c\u5982\u4f55\u63d0\u9ad8\u6548\u7387\u662fMySQL\u7684\u4e00\u4e2a\u91cd\u8981\u8bdd\u9898\uff0c\u56e0\u6b64\u6211\u4eec\u6709\u5fc5\u8981\u4e86\u89e3\u4e00\u4e0b\u78c1\u76d8\u7684\u76f8\u5173\u5185\u5bb9\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u78c1\u76d8\u7684\u7ed3\u6784<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u78c1\u76d8\u7684\u6574\u4f53\u7ed3\u6784<\/p>\n<\/blockquote>\n\n\n\n<p>\u78c1\u76d8\u7684\u6574\u4f53\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/51c24150daec403d97a22cde75f4ef49.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/51c24150daec403d97a22cde75f4ef49.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u90e8\u5206\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6c38\u78c1\u94c1\uff1a<\/strong> \u673a\u68b0\u786c\u76d8\u7684\u5b58\u50a8\u65b9\u5f0f\u4e0e\u78c1\u5e26\u6bd4\u8f83\u7c7b\u4f3c\uff0c\u78c1\u4f53\u5177\u6709\u8bb0\u5fc6\u7684\u529f\u80fd\uff0c\u6c38\u78c1\u94c1\u662f\u4e3a\u4e86\u4fdd\u8bc1\u78c1\u6027\u7684\u7a33\u5b9a\u3002<\/li>\n\n\n\n<li><strong>\u97f3\u5708\u9a6c\u8fbe\uff1a<\/strong> \u786c\u76d8\u8bfb\u53d6\u6570\u636e\u7684\u5173\u952e\u90e8\u4f4d\uff0c\u4e3b\u8981\u4f5c\u7528\u662f\u5c06\u5b58\u50a8\u5728\u78c1\u76d8\u4e0a\u7684\u4fe1\u606f\u8f6c\u6362\u4e3a\u7535\u4fe1\u53f7\u5411\u5916\u4f20\u8f93\u3002<\/li>\n\n\n\n<li><strong>\u4e3b\u8f74\uff1a<\/strong> \u4fdd\u8bc1\u7535\u673a\u7a33\u5b9a\u7684\u8f6c\u52a8\uff0c\u78c1\u76d8\u8f6c\u52a8\u624d\u80fd\u8bfb\u51fa\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u7a7a\u6c14\u6ee4\u6ce2\u7247\uff1a<\/strong> \u8fc7\u6ee4\u7a7a\u6c14\u786c\u76d8\u900f\u6c14\u5b54\u4e2d\u8fdb\u5165\u7684\u7a7a\u6c14\uff0c\u4fdd\u8bc1\u786c\u76d8\u5185\u90e8\u6e05\u6d01\uff0c\u540c\u65f6\u8fd8\u53ef\u4ee5\u9632\u6b62\u786c\u76d8\u5185\u90e8\u7684\u96f6\u4ef6\u6c27\u5316\uff0c\u786e\u4fdd\u786c\u76d8\u5b89\u5168\u4f7f\u7528\u3002<\/li>\n\n\n\n<li><strong>\u78c1\u76d8\uff1a<\/strong> \u786c\u76d8\u4e00\u822c\u90fd\u662f\u94dd\u5408\u91d1\u5236\u4f5c\u7684\uff0c\u4e3b\u8981\u662f\u7528\u6765\u5b58\u50a8\u6587\u4ef6\u7684\u3002<\/li>\n\n\n\n<li><strong>\u78c1\u5934\uff1a<\/strong> \u7528\u6765\u8bfb\u53d6\u76d8\u7247\u4e0a\u7684\u4fe1\u606f\u3002<\/li>\n\n\n\n<li><strong>\u4e32\u884c\u63a5\u53e3\uff1a<\/strong> \u7528\u6765\u8fde\u63a5\u7535\u8111\u4e0e\u786c\u76d8\u7684\u63a5\u53e3\uff0c\u8d77\u5230\u4f20\u8f93\u7684\u4f5c\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u78c1\u76d8\u4e2d\u7684\u4e00\u4e2a\u76d8\u7247<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e00\u4e2a\u78c1\u76d8\u7531\u591a\u4e2a\u76d8\u7247\u53e0\u52a0\u800c\u6210\uff0c\u76d8\u7247\u7684\u8868\u9762\u6d82\u6709\u78c1\u6027\u7269\u8d28\uff0c\u8fd9\u4e9b\u78c1\u6027\u7269\u8d28\u5c31\u662f\u7528\u6765\u8bb0\u5f55\u4e8c\u8fdb\u5236\u6570\u636e\u7684\uff0c\u56e0\u4e3a\u76d8\u7247\u7684\u6b63\u53cd\u4e24\u9762\u90fd\u53ef\u6d82\u4e0a\u78c1\u6027\u7269\u8d28\uff0c\u56e0\u6b64\u4e00\u4e2a\u76d8\u7247\u6709\u4e24\u4e2a\u76d8\u9762\u3002<\/p>\n\n\n\n<p>\u78c1\u76d8\u4e2d\u7684\u4e00\u4e2a\u76d8\u7247\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/f8280a91a5c04acabf95be16b89805d9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/f8280a91a5c04acabf95be16b89805d9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u90e8\u5206\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u78c1\u9053\uff1a<\/strong> \u78c1\u76d8\u8868\u9762\u88ab\u5206\u4e3a\u8bb8\u591a\u540c\u5fc3\u5706\uff0c\u6bcf\u4e2a\u540c\u5fc3\u5706\u79f0\u4e3a\u4e00\u4e2a\u78c1\u9053\uff0c\u6bcf\u4e2a\u78c1\u9053\u90fd\u6709\u4e00\u4e2a\u7f16\u53f7\uff0c\u6700\u5916\u9762\u7684\u662f0\u78c1\u9053\u3002<\/li>\n\n\n\n<li><strong>\u6247\u533a\uff1a<\/strong> \u6bcf\u4e2a\u78c1\u9053\u88ab\u5212\u5206\u6210\u82e5\u5e72\u4e2a\u6247\u533a\uff0c\u6bcf\u4e2a\u6247\u533a\u7684\u5b58\u50a8\u5bb9\u91cf\u4e3a512\u5b57\u8282\uff0c\u6bcf\u4e2a\u6247\u533a\u90fd\u6709\u4e00\u4e2a\u7f16\u53f7\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7531\u4e8e\u6bcf\u4e2a\u6247\u533a\u7684\u5b58\u50a8\u5bb9\u91cf\u76f8\u540c\uff0c\u56e0\u6b64\u6700\u5185\u4fa7\u78c1\u9053\u4e0a\u7684\u6247\u533a\u6570\u636e\u5bc6\u5ea6\u6700\u5927\uff0c\u800c\u6700\u5916\u4fa7\u78c1\u9053\u4e0a\u7684\u6247\u533a\u6570\u636e\u5bc6\u5ea6\u6700\u5c0f\u3002<\/li>\n\n\n\n<li>\u8fd1\u4e09\u5341\u5e74\u6765\uff0c\u6247\u533a\u5927\u5c0f\u4e00\u76f4\u662f512\u5b57\u8282\uff0c\u4f46\u6700\u8fd1\u51e0\u5e74\u6b63\u5728\u8fc1\u79fb\u5230\u66f4\u5927\u3001\u66f4\u9ad8\u6548\u76844096\u5b57\u8282\u6247\u533a\uff0c\u901a\u5e38\u79f0\u4e3a4K\u6247\u533a\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u6587\u4ef6\u5c31\u662f\u4fdd\u5b58\u5728\u78c1\u76d8\u4e2d\u7684\u4e00\u4e2a\u4e2a\u6247\u533a\u4e2d\u7684\uff0c\u56e0\u6b64\u627e\u5230\u4e00\u4e2a\u6587\u4ef6\u672c\u8d28\u5c31\u662f\uff0c\u5728\u78c1\u76d8\u4e0a\u627e\u5230\u4fdd\u5b58\u8be5\u6587\u4ef6\u7684\u6240\u6709\u6247\u533a\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6247\u533a\u7684\u5b9a\u4f4d\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u78c1\u76d8\u7531\u591a\u4e2a\u76d8\u7247\u53e0\u52a0\u800c\u6210\uff0c\u6bcf\u4e2a\u76d8\u7247\u6709\u4e24\u4e2a\u76d8\u9762\uff0c\u6240\u6709\u76d8\u9762\u4e2d\u534a\u5f84\u76f8\u540c\u7684\u540c\u5fc3\u78c1\u9053\u6784\u6210\u4e00\u4e2a\u67f1\u9762\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2a\u76d8\u9762\u90fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u78c1\u5934\uff0c\u6bcf\u4e2a\u78c1\u5934\u90fd\u6709\u4e00\u4e2a\u7f16\u53f7\uff0c\u6240\u6709\u7684\u78c1\u5934\u90fd\u662f\u8fde\u5728\u540c\u4e00\u4e2a\u78c1\u81c2\u4e0a\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/cafce38bdd3949aeac241cc8831821e9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/cafce38bdd3949aeac241cc8831821e9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5b9a\u4f4d\u6247\u533a\u65f6\u91c7\u7528CHS\u5bfb\u5740\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u78c1\u5934\uff08Heads\uff09\uff1a<\/strong> \u6bcf\u4e2a\u76d8\u9762\u90fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u78c1\u5934\uff0c\u56e0\u6b64\u786e\u5b9a\u4e86\u78c1\u5934\u4e5f\u5c31\u786e\u5b9a\u4e86\u6570\u636e\u5728\u54ea\u4e00\u4e2a\u76d8\u9762\u3002<\/li>\n\n\n\n<li><strong>\u67f1\u9762\uff08Cylinder\uff09\uff1a<\/strong> \u6240\u6709\u76d8\u9762\u4e2d\u534a\u5f84\u76f8\u540c\u7684\u540c\u5fc3\u78c1\u9053\u6784\u6210\u67f1\u9762\uff0c\u56e0\u6b64\u5728\u786e\u5b9a\u4e86\u6570\u636e\u5728\u54ea\u4e00\u4e2a\u76d8\u9762\u7684\u57fa\u7840\u4e0a\uff0c\u518d\u786e\u5b9a\u67f1\u9762\u4e5f\u5c31\u786e\u5b9a\u4e86\u6570\u636e\u5728\u8be5\u76d8\u9762\u4e0a\u7684\u54ea\u4e00\u4e2a\u78c1\u9053\u3002<\/li>\n\n\n\n<li><strong>\u6247\u533a\uff08Sector\uff09\uff1a<\/strong> \u6bcf\u4e2a\u78c1\u9053\u88ab\u5212\u5206\u6210\u82e5\u5e72\u4e2a\u6247\u533a\uff0c\u56e0\u6b64\u5728\u786e\u5b9a\u4e86\u6570\u636e\u5728\u54ea\u4e00\u4e2a\u78c1\u9053\u7684\u57fa\u7840\u4e0a\uff0c\u518d\u786e\u5b9a\u6247\u533a\u4e5f\u5c31\u786e\u5b9a\u4e86\u6570\u636e\u5728\u8be5\u78c1\u9053\u4e0a\u7684\u54ea\u4e2a\u6247\u533a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7b80\u5355\u6765\u8bf4\uff0cCHS\u5bfb\u5740\u65b9\u5f0f\u5c31\u662f\u5148\u901a\u8fc7H\u786e\u5b9a\u6570\u636e\u6240\u5728\u7684\u76d8\u9762\uff0c\u518d\u901a\u8fc7C\u786e\u5b9a\u6570\u636e\u6240\u5728\u7684\u78c1\u9053\uff0c\u6700\u540e\u901a\u8fc7S\u5b9a\u4f4d\u5230\u76ee\u6807\u6247\u533a\u3002<\/p>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CHS\u5bfb\u5740\u65b9\u5f0f\u662f\u78c1\u76d8\u5b9a\u4f4d\u6247\u533a\u7684\u65b9\u5f0f\uff0c\u4f46\u5b9e\u9645CHS\u5bfb\u5740\u65b9\u5f0f\u5bf9\u78c1\u76d8\u4ee5\u5916\u7684\u8bbe\u5907\u6765\u8bf4\u6ca1\u4ec0\u4e48\u4f5c\u7528\uff0c\u56e0\u6b64\u7cfb\u7edf\u8f6f\u4ef6\u5728\u5b9a\u4f4d\u78c1\u76d8\u4e0a\u7684\u6570\u636e\u65f6\u91c7\u7528\u7684\u662fLBA\uff08Logical Block Address\uff0c\u903b\u8f91\u533a\u5757\u5730\u5740\uff09\u3002<\/li>\n\n\n\n<li>LBA\u662f\u63cf\u8ff0\u8ba1\u7b97\u673a\u5b58\u50a8\u8bbe\u5907\u4e0a\u6570\u636e\u6240\u5728\u533a\u5757\u7684\u901a\u7528\u673a\u5236\uff0cLBA\u548cCHS\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7\u8ba1\u7b97\u516c\u5f0f\u8fdb\u884c\u76f8\u4e92\u8f6c\u6362\uff0cLBA\u5b58\u5728\u7684\u610f\u4e49\u5c31\u662f\u5bf9\u5e95\u5c42\u903b\u8f91\u5668\u4ef6\u8fdb\u884c\u865a\u62df\u5316\uff0c\u8ba9\u7cfb\u7edf\u8f6f\u4ef6\u53ef\u4ee5\u4e0d\u7528\u5173\u5fc3\u5e95\u5c42\u786c\u4ef6\u5177\u4f53\u7684\u5bfb\u5740\u65b9\u5f0f\uff0c\u800c\u5b9e\u9645\u5e95\u5c42\u786c\u4ef6\u91c7\u7528\u7684\u8fd8\u662fCHS\u5bfb\u5740\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d<\/p>\n<\/blockquote>\n\n\n\n<p>\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u8fdb\u884cIO\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f4KB\uff0c\u800c\u4e0d\u662f\u6247\u533a\u7684\u5927\u5c0f512\u5b57\u8282\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7269\u7406\u5185\u5b58\u5b9e\u9645\u662f\u88ab\u5212\u5206\u6210\u4e00\u4e2a\u4e2a4KB\u5927\u5c0f\u7684\u9875\u6846\u7684\uff0c\u78c1\u76d8\u4e0a\u7684\u6570\u636e\u4e5f\u4f1a\u88ab\u5212\u5206\u6210\u4e00\u4e2a\u4e2a4KB\u5927\u5c0f\u7684\u9875\u5e27\uff0c\u56e0\u6b64\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u4ee54KB\u4e3a\u5355\u4f4d\u8fdb\u884cIO\u4ea4\u4e92\uff0c\u5c31\u80fd\u63d0\u9ad8\u6570\u636e\u52a0\u8f7d\u548c\u4fdd\u5b58\u7684\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u8fdb\u884cIO\u4ea4\u4e92\u65f6\uff0c\u5982\u679c\u76f4\u63a5\u4ee5\u6247\u533a\u7684\u5927\u5c0f\u4f5c\u4e3aIO\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u90a3\u4e48\u8fd9\u65f6\u7cfb\u7edf\u7684IO\u4ee3\u7801\u548c\u786c\u4ef6\u5c31\u662f\u5f3a\u76f8\u5173\u7684\uff0c\u5c06\u6765\u5f53\u786c\u4ef6\u7684\u6247\u533a\u5927\u5c0f\u53d1\u751f\u53d8\u5316\u65f6\u5c31\u9700\u8981\u5bf9\u5e94\u4fee\u6539\u64cd\u4f5c\u7cfb\u7edf\u7684IO\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u4ee5\u6247\u533a\u7684\u5927\u5c0f\u4f5c\u4e3aIO\u7684\u57fa\u672c\u5355\u4f4d\u592a\u5c0f\u4e86\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u8bfb\u53d6\u540c\u6837\u7684\u6570\u636e\u5185\u5bb9\uff0c\u9700\u8981\u8fdb\u884c\u66f4\u591a\u6b21\u7684\u78c1\u76d8\u8bbf\u95ee\uff0c\u800c\u78c1\u76d8\u7684\u6548\u7387\u662f\u6bd4\u8f83\u4f4e\u7684\uff0c\u8fd9\u6837IO\u6548\u7387\u5c31\u964d\u4f4e\u4e86\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u4ee54KB\u4f5c\u4e3aIO\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u4e00\u65b9\u9762\u662f\u4e3a\u4e86\u63d0\u9ad8IO\u6548\u7387\uff0c\u53e6\u4e00\u65b9\u9762\u662f\u4e3a\u4e86\u5b9e\u73b0\u786c\u4ef6\u548c\u7cfb\u7edf\u7684\u89e3\u8026\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u78c1\u76d8\u7684\u968f\u673a\u8bbf\u95ee\uff08Random Access\uff09\u4e0e\u8fde\u7eed\u8bbf\u95ee\uff08Sequential Access\uff09<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u968f\u673a\u8bbf\u95ee\u548c\u8fde\u7eed\u8bbf\u95ee<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u968f\u673a\u8bbf\u95ee\uff1a<\/strong> \u672c\u6b21IO\u6240\u7ed9\u51fa\u7684\u6247\u533a\u5730\u5740\u4e0e\u4e0a\u6b21IO\u7ed9\u51fa\u7684\u6247\u533a\u5730\u5740\u4e0d\u8fde\u7eed\uff0c\u78c1\u5934\u5728\u4e24\u6b21IO\u64cd\u4f5c\u4e4b\u95f4\u9700\u8981\u505a\u6bd4\u8f83\u5927\u7684\u79fb\u52a8\u52a8\u4f5c\u624d\u80fd\u627e\u5230\u76ee\u6807\u6247\u533a\u8fdb\u884cIO\u3002<\/li>\n\n\n\n<li><strong>\u8fde\u7eed\u8bbf\u95ee\uff1a<\/strong> \u672c\u6b21IO\u6240\u7ed9\u51fa\u7684\u6247\u533a\u5730\u5740\u4e0e\u4e0a\u6b21IO\u7ed9\u51fa\u7684\u6247\u533a\u5730\u5740\u662f\u8fde\u7eed\u7684\uff0c\u78c1\u5934\u5f88\u5feb\u5c31\u80fd\u627e\u5230\u76ee\u6807\u6247\u533a\u8fdb\u884cIO\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5c3d\u7ba1\u4e24\u6b21IO\u662f\u5728\u540c\u4e00\u65f6\u523b\u53d1\u51fa\u7684\uff0c\u4f46\u5982\u679c\u5b83\u4eec\u8bf7\u6c42\u7684\u6247\u533a\u5730\u5740\u76f8\u5dee\u5f88\u5927\uff0c\u90a3\u4e5f\u53ea\u80fd\u79f0\u4e3a\u968f\u673a\u8bbf\u95ee\uff0c\u56e0\u4e3a\u8fde\u7eed\u8bbf\u95ee\u4e2d\u7684\u8fde\u7eed\u6307\u7684\u662f\u8bbf\u95ee\u7684\u6247\u533a\u5730\u5740\u7684\u8fde\u7eed\uff0c\u800c\u4e0d\u662f\u8bbf\u95ee\u65f6\u95f4\u7684\u8fde\u7eed\uff0c\u7531\u4e8e\u8fde\u7eed\u8bbf\u95ee\u4e0d\u9700\u8981\u8fc7\u591a\u7684\u5b9a\u4f4d\uff0c\u56e0\u6b64\u6548\u7387\u6bd4\u8f83\u9ad8\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>MySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d<\/p>\n<\/blockquote>\n\n\n\n<p>MySQL\u4f5c\u4e3a\u4e00\u6b3e\u5e94\u7528\u8f6f\u4ef6\uff0c\u53ef\u4ee5\u60f3\u8c61\u6210\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5b83\u6709\u7740\u66f4\u9ad8\u9891\u7684IO\u573a\u666f\uff0c\u56e0\u6b64\u4e3a\u4e86\u63d0\u9ad8\u57fa\u672c\u7684IO\u6548\u7387\uff0cMySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f16KB\uff0c\u8fd9\u4e2a\u57fa\u672c\u6570\u636e\u5355\u5143\u5728MySQL\u8fd9\u91cc\u4e5f\u53eb\u505aPage\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7show\u547d\u4ee4\u67e5\u770b\u7cfb\u7edf\u4e2d\u7684\u5168\u5c40\u53d8\u91cf\uff0c\u53ef\u4ee5\u770b\u5230InnoDB\u5b58\u50a8\u5f15\u64ce\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f16KB\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/1f7cdf9176c14a24a504c7f760fa4f38.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/1f7cdf9176c14a24a504c7f760fa4f38.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong> \u672c\u7bc7\u535a\u5ba2\u4e2d\u6ca1\u6709\u505a\u7279\u6b8a\u8bf4\u660e\u7684\u5730\u65b9\uff0c\u90fd\u662f\u4ee5InnoDB\u5b58\u50a8\u5f15\u64ce\u4e3a\u4f8b\u8fdb\u884c\u8bb2\u89e3\u7684\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Buffer Pool<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728MySQL\u4e2d\u8fdb\u884c\u7684\u5404\u79cdCRUD\u64cd\u4f5c\u65f6\uff0c\u90fd\u9700\u8981\u5148\u901a\u8fc7\u8ba1\u7b97\u627e\u5230\u5bf9\u5e94\u7684\u64cd\u4f5c\u4f4d\u7f6e\uff0c\u53ea\u8981\u6d89\u53ca\u8ba1\u7b97\u5c31\u9700\u8981CPU\u53c2\u4e0e\uff0c\u800c\u51af\u8bfa\u4f9d\u66fc\u4f53\u7cfb\u7ed3\u6784\u51b3\u5b9a\u4e86CPU\u53ea\u80fd\u548c\u5185\u5b58\u6253\u4ea4\u9053\uff0c\u56e0\u6b64\u4e3a\u4e86\u4fbf\u4e8eCPU\u53c2\u4e0e\uff0c\u5c31\u9700\u8981\u5148\u5c06\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58\u5f53\u4e2d\u3002<\/li>\n\n\n\n<li>\u6240\u4ee5\u5728\u7279\u5b9a\u7684\u65f6\u95f4\u5185\uff0cMySQL\u4e2d\u7684\u6570\u636e\u4e00\u5b9a\u662f\u540c\u65f6\u5b58\u5728\u4e8e\u78c1\u76d8\u548c\u5185\u5b58\u4e2d\u7684\uff0c\u5f53\u64cd\u4f5c\u5b8c\u5185\u5b58\u6570\u636e\u540e\uff0c\u518d\u4ee5\u7279\u5b9a\u7684\u5237\u65b0\u7b56\u7565\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u5f53\u4e2d\uff0c\u8fd9\u65f6MySQL\u548c\u78c1\u76d8\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u5c31\u662fPage\u3002<\/li>\n\n\n\n<li>\u4e3a\u4e86\u66f4\u597d\u7684\u652f\u6301\u4e0a\u8ff0\u64cd\u4f5c\uff0cMySQL\u670d\u52a1\u5668\u5728\u542f\u52a8\u7684\u65f6\u5019\u4f1a\u9884\u5148\u7533\u8bf7\u4e00\u5757\u5185\u5b58\u7a7a\u95f4\u6765\u8fdb\u884c\u5404\u79cd\u7f13\u5b58\uff0c\u8fd9\u5757\u5185\u5b58\u7a7a\u95f4\u53eb\u505aBuffer Pool\uff0c\u540e\u7eed\u78c1\u76d8\u4e2d\u52a0\u8f7d\u7684\u6570\u636e\u5c31\u4f1a\u4fdd\u5b58\u5728Buffer Pool\u4e2d\uff0c\u5237\u65b0\u6570\u636e\u65f6\u4e5f\u5c31\u662f\u5c06Buffer Pool\u4e2d\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u3002<\/li>\n\n\n\n<li>\u7531\u4e8e\u5185\u6838\u4e2d\u662f\u6709\u5185\u6838\u7f13\u51b2\u533a\u7684\uff0c\u56e0\u6b64MySQL\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u9700\u8981\u5148\u5c06\u6570\u636e\u4ece\u78c1\u76d8\u8bfb\u53d6\u5230\u5185\u6838\u7f13\u51b2\u533a\uff0c\u518d\u5c06\u6570\u636e\u4ece\u5185\u6838\u7f13\u51b2\u533a\u8bfb\u53d6\u5230Buffer Pool\uff0cMySQL\u5c06\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u65f6\uff0c\u540c\u6837\u9700\u8981\u5148\u5c06\u6570\u636e\u4eceBuffer Pool\u5237\u65b0\u5230\u5185\u6838\u7f13\u51b2\u533a\uff0c\u518d\u5c06\u6570\u636e\u4ece\u5185\u6838\u7f13\u51b2\u533a\u5237\u65b0\u5230\u78c1\u76d8\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\u6240\u8c13\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f4KB\uff0c\u5c31\u662f\u6307\u5185\u6838\u7f13\u51b2\u533a\u4e0e\u78c1\u76d8\u4e4b\u95f4\u662f\u4ee54KB\u4e3a\u5355\u4f4d\u8fdb\u884c\u4ea4\u4e92\u7684\u3002\u800cMySQL\u7684Buffer Pool\u548c\u78c1\u76d8\u5b9e\u9645\u5e76\u4e0d\u662f\u76f4\u63a5\u4ea4\u4e92\u7684\uff0c\u56e0\u6b64\u6240\u8c13\u7684MySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f16KB\uff0c\u6307\u7684\u662fMySQL\u7684Buffer Pool\u4e0e\u5185\u6838\u7f13\u51b2\u533a\u4e4b\u95f4\u662f\u4ee516KB\u4e3a\u5355\u4f4d\u8fdb\u884c\u4ea4\u4e92\u7684\u3002\u53ea\u4e0d\u8fc7\u5728\u8bf4\u7684\u65f6\u5019\u66f4\u5173\u6ce8\u7684\u662fMySQL\u548c\u78c1\u76d8\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u6240\u4ee5\u76f4\u63a5\u8bf4\u7684\u662fMySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f16KB\uff0c\u76f8\u5f53\u4e8e\u5ffd\u7565\u4e86\u4e2d\u95f4\u7684\u5185\u6838\u7f13\u51b2\u533a\u3002<\/p>\n\n\n\n<p>\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/5a8a329325f0474aa50a93f49a60e1ee.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/5a8a329325f0474aa50a93f49a60e1ee.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d22\u5f15\u7684\u7406\u89e3<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u89c2\u5bdf\u4e3b\u952e\u7d22\u5f15\u73b0\u8c61<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u89c2\u5bdf\u4e3b\u952e\u7d22\u5f15\u73b0\u8c61<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u7528\u6237\u8868\uff0c\u8868\u5f53\u4e2d\u5305\u542b\u7528\u6237\u7684id\u3001\u5e74\u9f84\u548c\u59d3\u540d\uff0c\u5e76\u5c06\u7528\u6237\u7684id\u8bbe\u7f6e\u6210\u4e3b\u952e\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/d9ad05e63f5e4bcfa07b467480af3e67.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/d9ad05e63f5e4bcfa07b467480af3e67.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u521b\u5efa\u8868\u5b8c\u6bd5\u540e\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u4e9b\u6570\u636e\uff0c\u5e76\u4e14\u63d2\u5165\u6570\u636e\u65f6\u6ca1\u6709\u6309\u7167\u4e3b\u952e\u7684\u5927\u5c0f\u987a\u5e8f\u63d2\u5165\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/9eeae63446ce408b81091aad7d33d3e8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/9eeae63446ce408b81091aad7d33d3e8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u4f46\u6700\u7ec8\u5f53\u6211\u4eec\u67e5\u770b\u8868\u4e2d\u7684\u6570\u636e\u65f6\uff0c\u5374\u53d1\u73b0\u663e\u793a\u51fa\u6765\u7684\u6570\u636e\u662f\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u6709\u5e8f\u6392\u5217\u7684\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/6b5730df294749a5a2a1db239c1a2385.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/6b5730df294749a5a2a1db239c1a2385.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6839\u672c\u539f\u56e0\u5c31\u662f\uff0c\u56e0\u4e3a\u6211\u4eec\u521b\u5efa\u8868\u65f6\u8bbe\u7f6e\u4e86\u4e3b\u952e\uff0c\u5373\u4fbf\u5411\u8868\u4e2d\u63d2\u5165\u6570\u636e\u65f6\u662f\u4e71\u5e8f\u63d2\u5165\u7684\uff0cMySQL\u5e95\u5c42\u4e5f\u4f1a\u81ea\u52a8\u6309\u7167\u4e3b\u952e\u5bf9\u63d2\u5165\u7684\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e3a\u4ec0\u4e48MySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662fPage<\/p>\n<\/blockquote>\n\n\n\n<p>MySQL\u4e0e\u78c1\u76d8\u8fdb\u884c\u4ea4\u4e92\u65f6\u4e3a\u4ec0\u4e48\u4e0d\u662f\u6309\u9700\u4ea4\u4e92\uff0c\u800c\u662f\u4ee5Page\u4e3a\u57fa\u672c\u5355\u4f4d\u8fdb\u884c\u4ea4\u4e92\u7684\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u6211\u4eec\u67e5\u8be2\u8868\u4e2d\u7684\u67d0\u4e00\u6761\u8bb0\u5f55\u65f6\uff0c\u5982\u679cMySQL\u53ea\u4ece\u78c1\u76d8\u4e2d\u5c06\u8fd9\u4e00\u6761\u8bb0\u5f55\u52a0\u8f7d\u5230\u5185\u5b58\u5f53\u4e2d\uff0c\u90a3\u4e48\u5f53\u6211\u4eec\u7ee7\u7eed\u67e5\u8be2\u8868\u4e2d\u7684\u5176\u4ed6\u8bb0\u5f55\u65f6\uff0cMySQL\u5c31\u4e00\u5b9a\u9700\u8981\u518d\u6b21\u4e0e\u78c1\u76d8\u8fdb\u884cIO\u4ea4\u4e92\u3002<\/li>\n\n\n\n<li>\u800c\u5982\u679c\u5f53\u6211\u4eec\u67e5\u8be2\u8868\u4e2d\u7684\u67d0\u4e00\u6761\u8bb0\u5f55\u65f6\uff0cMySQL\u76f4\u63a5\u5c06\u8fd9\u6761\u8bb0\u5f55\u6240\u5728\u7684\u6574\u4e2aPage\u90fd\u52a0\u8f7d\u5230\u5185\u5b58\u5f53\u4e2d\uff0c\u90a3\u4e48\u5f53\u6211\u4eec\u7ee7\u7eed\u67e5\u8be2\u8868\u4e2d\u7684\u5176\u4ed6\u8bb0\u5f55\u65f6\uff0cMySQL\u5f88\u53ef\u80fd\u5c31\u4e0d\u518d\u9700\u8981\u4e0e\u78c1\u76d8\u8fdb\u884cIO\u4ea4\u4e92\u4e86\uff0c\u56e0\u4e3a\u8fd9\u6761\u8bb0\u5f55\u5f88\u53ef\u80fd\u4e5f\u5728\u88ab\u52a0\u8f7d\u8fdb\u6765\u7684Page\u5f53\u4e2d\uff0c\u8fd9\u65f6\u76f4\u63a5\u5728\u5185\u5b58\u4e2d\u8fdb\u884c\u67e5\u8be2\u5373\u53ef\uff0c\u5927\u5927\u51cf\u5c11\u4e86IO\u7684\u6b21\u6570\u3002<\/li>\n\n\n\n<li>\u5f53\u7136\uff0c\u6211\u4eec\u4e0d\u80fd\u4fdd\u8bc1\u7528\u6237\u4e0b\u4e00\u6b21\u8981\u8bbf\u95ee\u7684\u6570\u636e\u4e00\u5b9a\u5c31\u5728\u672c\u6b21\u52a0\u8f7d\u8fdb\u6765\u7684Page\u5f53\u4e2d\uff0c\u4f46\u662f\u6839\u636e\u7edf\u8ba1\u5b66\u539f\u7406\uff0c\u5f53\u4e00\u4e2a\u6570\u636e\u6b63\u5728\u88ab\u8bbf\u95ee\u65f6\uff0c\u90a3\u4e48\u4e0b\u4e00\u6b21\u6709\u5f88\u5927\u53ef\u80fd\u4f1a\u8bbf\u95ee\u5176\u5468\u56f4\u7684\u6570\u636e\uff08\u5c40\u90e8\u6027\u539f\u7406\uff09\uff0c\u56e0\u6b64\u6211\u4eec\u6709\u8f83\u5927\u6982\u7387\u4fdd\u8bc1\u7528\u6237\u4e0b\u4e00\u6b21\u8981\u8bbf\u95ee\u7684\u6570\u636e\u548c\u672c\u6b21\u8bbf\u95ee\u7684\u6570\u636e\u5728\u540c\u4e00\u4e2aPage\u5f53\u4e2d\uff0c\u5982\u679c\u5c40\u90e8\u6027\u539f\u7406\u6ca1\u6709\u8d77\u4f5c\u7528\uff0c\u90a3\u5c31\u518d\u628a\u5bf9\u5e94\u7684Page\u52a0\u8f7d\u5230\u5185\u5b58\u5f53\u4e2d\u5373\u53ef\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0cMySQL\u4e0e\u78c1\u76d8\u8fdb\u884c\u4ea4\u4e92\u65f6\u4ee5Page\u4e3a\u57fa\u672c\u5355\u4f4d\uff0c\u53ef\u4ee5\u51cf\u5c11\u4e0e\u78c1\u76d8IO\u4ea4\u4e92\u7684\u6b21\u6570\uff0c\u8fdb\u800c\u63d0\u9ad8IO\u7684\u6548\u7387\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u63a8\u5bfc\u4e3b\u952e\u7d22\u5f15\u7ed3\u6784\u7684\u6784\u5efa<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5355\u4e2aPage<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL\u4e2d\u8981\u7ba1\u7406\u5f88\u591a\u6570\u636e\u6587\u4ef6\uff0c\u5728\u8fd0\u884c\u671f\u95f4\u4e00\u5b9a\u6709\u5927\u91cf\u7684Page\u9700\u8981\u88ab\u6362\u5165\u6362\u51fa\uff0c\u56e0\u6b64MySQL\u4e00\u5b9a\u9700\u8981\u5c06\u5185\u5b58\u4e2d\u5927\u91cf\u7684Page\u7ba1\u7406\u8d77\u6765\u3002<\/li>\n\n\n\n<li>MySQL\u5c06\u5185\u5b58\u4e2d\u7684\u6bcf\u4e00\u4e2aPage\u90fd\u7528\u4e00\u4e2a\u7ed3\u6784\u4f53\u63cf\u8ff0\u8d77\u6765\uff0c\u7136\u540e\u518d\u5c06\u5404\u4e2a\u7ed3\u6784\u4f53\u4ee5\u53cc\u94fe\u8868\u7684\u5f62\u5f0f\u7ec4\u7ec7\u8d77\u6765\uff0c\u56e0\u6b64\u4e00\u4e2aPage\u7ed3\u6784\u4f53\u5185\u90e8\u65e2\u5305\u542b\u6570\u636e\u5b57\u6bb5\uff0c\u4e5f\u5305\u542b\u5c5e\u6027\u5b57\u6bb5\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u4e3a\u4e86\u65b9\u4fbf\u540e\u7eed\u6570\u636e\u7684\u63d2\u5165\u548c\u5220\u9664\uff0c\u6bcf\u4e2aPage\u7ed3\u6784\u4f53\u5185\u90e8\u5b58\u50a8\u7684\u6570\u636e\u8bb0\u5f55\u4f1a\u4ee5\u5355\u94fe\u8868\u7684\u5f62\u5f0f\u7ec4\u7ec7\u8d77\u6765\uff0c\u5e76\u4e14\u5404\u4e2a\u8bb0\u5f55\u4e4b\u95f4\u4f1a\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u6392\u5e8f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5047\u8bbe\u4e0a\u8ff0\u6d4b\u8bd5\u8868\u4e2d\u7684\u8bb0\u5f55\u90fd\u5728\u540c\u4e00\u4e2aPage\u5f53\u4e2d\uff0c\u90a3\u4e48\u8be5Page\u7684\u7ed3\u6784\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/de7da8eda9bb4473b514fca278c47f57.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/de7da8eda9bb4473b514fca278c47f57.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u4e2aPage\u7ed3\u6784\u4f53\u5185\u90e8\u7684\u6570\u636e\u4f1a\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u6392\u5e8f\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u4f18\u5316\u6570\u636e\u67e5\u8be2\u7684\u6548\u7387\uff0c\u56e0\u4e3a\u5355\u94fe\u8868\u5728\u67e5\u627e\u7684\u65f6\u5019\u662f\u987a\u5e8f\u67e5\u627e\u7684\uff0c\u6709\u5e8f\u5c31\u610f\u5473\u7740\u5728\u67e5\u627e\u7684\u8fc7\u7a0b\u4e2d\u6709\u673a\u4f1a\u63d0\u524d\u7ed3\u675f\u67e5\u8be2\u8fc7\u7a0b\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e5f\u5c31\u662f\u524d\u9762\u6240\u8bf4\u7684\uff0c\u53ea\u8981\u8bbe\u7f6e\u4e86\u4e3b\u952e\uff0c\u5373\u4fbf\u5411\u8868\u4e2d\u63d2\u5165\u7684\u6570\u636e\u662f\u4e71\u5e8f\u7684\uff0cMySQL\u5e95\u5c42\u4e5f\u4f1a\u81ea\u52a8\u6309\u7167\u4e3b\u952e\u5bf9\u63d2\u5165\u7684\u6570\u636e\u8fdb\u884c\u6392\u5e8f\uff0c\u56e0\u6b64\u67e5\u8be2\u5f97\u5230\u7684\u6570\u636e\u662f\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u6709\u5e8f\u6392\u5e8f\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5355\u4e2aPage\u5185\u521b\u5efa\u9875\u5185\u76ee\u5f55<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Page\u7ed3\u6784\u4f53\u5185\u90e8\u5b58\u50a8\u7684\u6570\u636e\u8bb0\u5f55\u662f\u4ee5\u5355\u94fe\u8868\u7684\u5f62\u5f0f\u7ec4\u7ec7\u8d77\u6765\u7684\uff0c\u5f53\u9875\u5185\u90e8\u7684\u6570\u636e\u91cf\u589e\u591a\u65f6\uff0c\u672c\u8d28\u5728\u9875\u5185\u90e8\u8fdb\u884c\u7684\u8fd8\u662f\u7ebf\u6027\u904d\u5386\uff0c\u6548\u7387\u4f4e\u4e0b\u3002<\/li>\n\n\n\n<li>\u8fd9\u65f6\u53ef\u4ee5\u5728Page\u7ed3\u6784\u4f53\u5185\u90e8\u5f15\u5165\u9875\u5185\u76ee\u5f55\uff0c\u5c06Page\u7ed3\u6784\u4f53\u5185\u90e8\u5b58\u50a8\u7684\u6570\u636e\u8bb0\u5f55\u6309\u7167\u4e3b\u952e\u5212\u5206\u4e3a\u82e5\u5e72\u533a\u57df\uff0c\u9875\u5185\u76ee\u5f55\u4e2d\u5c31\u5b58\u50a8\u7740\u8fd9\u82e5\u5e72\u533a\u57df\u7684\u6700\u5c0f\u952e\u503c\u3002<\/li>\n\n\n\n<li>\u5728Page\u7ed3\u6784\u4f53\u5185\u90e8\u5f15\u5165\u9875\u5185\u76ee\u5f55\u540e\uff0c\u5728\u9875\u5185\u90e8\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u53ef\u4ee5\u5148\u901a\u8fc7\u9875\u5185\u76ee\u5f55\u627e\u5230\u76ee\u6807\u6570\u636e\u6240\u5728\u533a\u57df\u7684\u8d77\u59cb\u8bb0\u5f55\uff0c\u7136\u540e\u518d\u4ece\u8be5\u8bb0\u5f55\u5f00\u59cb\u5411\u540e\u904d\u5386\u627e\u5230\u76ee\u6807\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u5728\u4e4b\u524d\u7684Page\u5185\u90e8\u5f15\u5165\u9875\u5185\u76ee\u5f55\u540e\u7684\u7ed3\u6784\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/25b2d65dff2747d7a00016c0a704a29c.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/25b2d65dff2747d7a00016c0a704a29c.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u6bcf\u4e2aPage\u7ed3\u6784\u4f53\u5185\u90e8\u5f15\u5165\u9875\u5185\u76ee\u5f55\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u52a0\u901f\u5728\u5355\u4e2aPage\u5185\u90e8\u6570\u636e\u67e5\u8be2\u7684\u6548\u7387\u3002\u7531\u4e8e\u8fd9\u4e2a\u9875\u5185\u76ee\u5f55\u4e5f\u662f\u4fdd\u5b58\u5728Page\u5185\u90e8\u7684\uff0c\u800c\u5355\u4e2aPage\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u56e0\u6b64\u6dfb\u52a0\u9875\u5185\u76ee\u5f55\u540ePage\u5185\u90e8\u80fd\u591f\u4fdd\u5b58\u7684\u6570\u636e\u8bb0\u5f55\u53d8\u5c11\u4e86\uff0c\u6240\u4ee5\u5728Page\u5185\u90e8\u5f15\u5165\u9875\u5185\u76ee\u5f55\u672c\u8d28\u662f\u4e00\u79cd\u7a7a\u95f4\u6362\u65f6\u95f4\u7684\u505a\u6cd5\uff0c\u5c31\u50cf\u7ed9\u4e66\u6dfb\u52a0\u76ee\u5f55\u9700\u8981\u82b1\u8d39\u66f4\u591a\u7684\u7eb8\u5f20\u4e00\u6837\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2aPage\u7ed3\u6784\u4f53\u5185\u90e8\u7684\u6570\u636e\u4f1a\u6309\u7167\u4e3b\u952e\u8fdb\u884c\u6392\u5e8f\uff0c\u5176\u5b9e\u5c31\u662f\u4e3a\u4e86\u5f15\u5165\u9875\u5185\u76ee\u5f55\uff0c\u56e0\u4e3a\u53ea\u6709\u6570\u636e\u6309\u7167\u4e3b\u952e\u6392\u5e8f\u540e\u5f15\u5165\u9875\u5185\u76ee\u5f55\u624d\u6709\u610f\u4e49\uff0c\u5c31\u50cf\u4e66\u4e2d\u6bcf\u4e00\u9875\u90fd\u662f\u6309\u7167\u9875\u7801\u8fdb\u884c\u6392\u5e8f\u7684\u4e00\u6837\uff0c\u5982\u679c\u4e00\u672c\u4e66\u7684\u9875\u7801\u662f\u4e71\u5e8f\u7684\uff0c\u90a3\u4e48\u5b83\u7684\u76ee\u5f55\u6839\u672c\u5c31\u6ca1\u6709\u610f\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u591a\u4e2aPage<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u968f\u7740\u6570\u636e\u91cf\u4e0d\u65ad\u589e\u5927\uff0c\u5355\u4e2aPage\u4e2d\u65e0\u6cd5\u5b58\u4e0b\u6240\u6709\u6570\u636e\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u7528\u591a\u4e2aPage\u6765\u5b58\u50a8\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u8fd9\u65f6\u5728\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u9700\u8981\uff0c\u5148\u904d\u5386Page\u53cc\u94fe\u8868\u786e\u5b9a\u76ee\u6807\u6570\u636e\u5728\u54ea\u4e00\u4e2aPage\uff0c\u7136\u540e\u518d\u5728\u8be5Page\u5185\u90e8\u627e\u5230\u76ee\u6807\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u591a\u4e2aPage\u7684\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/2c1dc87069364f989542aa14879d70fd.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2c1dc87069364f989542aa14879d70fd.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Page\u4e4b\u4e0a\u521b\u5efa\u9875\u76ee\u5f55<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u867d\u7136\u5728\u5355\u4e2aPage\u5185\u90e8\u80fd\u591f\u901a\u8fc7\u9875\u5185\u76ee\u5f55\u6765\u5feb\u901f\u5b9a\u4f4d\u6570\u636e\uff0c\u4f46\u5728\u904d\u5386Page\u53cc\u94fe\u8868\u5bfb\u627e\u76ee\u6807Page\u65f6\u672c\u8d28\u8fdb\u884c\u7684\u8fd8\u662f\u7ebf\u6027\u904d\u5386\u3002<\/li>\n\n\n\n<li>\u8fd9\u65f6\u53ef\u4ee5\u7ed9\u5404\u4e2aPage\u7ed3\u6784\u4f53\u4e5f\u5efa\u7acb\u9875\u76ee\u5f55\uff0c\u9875\u76ee\u5f55\u4e2d\u7684\u6bcf\u4e2a\u76ee\u5f55\u9879\u90fd\u6307\u5411\u4e00\u4e2aPage\uff0c\u800c\u8fd9\u4e2a\u76ee\u5f55\u9879\u5b58\u653e\u7684\u5c31\u662f\u5176\u6307\u5411\u7684Page\u4e2d\u5b58\u653e\u7684\u6700\u5c0f\u6570\u636e\u7684\u952e\u503c\u3002<\/li>\n\n\n\n<li>\u5728\u7ed9\u5404\u4e2aPage\u7ed3\u6784\u4f53\u5efa\u7acb\u9875\u76ee\u5f55\u540e\uff0c\u5728\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u53ef\u4ee5\u5148\u901a\u8fc7\u904d\u5386\u9875\u76ee\u5f55\u627e\u5230\u76ee\u6807\u6570\u636e\u6240\u5728\u7684Page\uff0c\u7136\u540e\u518d\u5728\u8be5Page\u5185\u90e8\u627e\u5230\u76ee\u6807\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7ed9\u5404\u4e2aPage\u5efa\u7acb\u9875\u76ee\u5f55\u540e\u7684\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/c1b3c8a66eb14d18ab8040dae364c98b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c1b3c8a66eb14d18ab8040dae364c98b.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u91cc\u7684\u9875\u76ee\u5f55\u4e0e\u4e4b\u524d\u7684\u9875\u5185\u76ee\u5f55\u7684\u533a\u522b\u5728\u4e8e\uff0c\u9875\u76ee\u5f55\u7ba1\u7406\u7684\u662f\u4e00\u4e2a\u4e2a\u7684Page\uff0c\u800c\u9875\u5185\u76ee\u5f55\u7ba1\u7406\u7684\u662f\u4e00\u6761\u6761\u7684\u8bb0\u5f55\u3002\u6b64\u5916\uff0c\u9875\u5185\u76ee\u5f55\u4e0e\u5176\u7ba1\u7406\u7684\u591a\u6761\u8bb0\u5f55\u662f\u4fdd\u5b58\u5728\u540c\u4e00\u4e2aPage\u4e2d\u7684\uff0c\u800c\u9875\u76ee\u5f55\u662f\u91cd\u65b0\u7533\u8bf7\u7684\u4e00\u4e2aPage\u7ed3\u6784\u4f53\u6765\u4fdd\u5b58\u7684\u3002<\/li>\n\n\n\n<li>\u968f\u7740\u6570\u636e\u91cf\u4e0d\u65ad\u589e\u5927\uff0cPage\u53d8\u5f97\u8d8a\u6765\u8d8a\u591a\uff0c\u8fd9\u65f6\u4e00\u4e2a\u9875\u76ee\u5f55\u65e0\u6cd5\u7ba1\u7406\u6240\u6709\u7684Page\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u66f4\u591a\u4e2a\u7684\u9875\u76ee\u5f55\u3002\u8fd9\u4e9b\u9875\u76ee\u5f55\u4e5f\u662f\u4e00\u4e2a\u4e2a\u7684Page\u7ed3\u6784\u4f53\uff0c\u53ea\u4e0d\u8fc7\u8fd9\u4e9bPage\u7ed3\u6784\u4f53\u4e2d\u5b58\u653e\u7684\u4e0d\u662f\u6570\u636e\u8bb0\u5f55\uff0c\u800c\u662f\u5404\u4e2aPage\u7684\u76ee\u5f55\u4fe1\u606f\u3002\u4f46\u662f\u5728MySQL\u770b\u6765\uff0c\u65e0\u8bbaPage\u5f53\u4e2d\u5b58\u50a8\u7684\u662f\u4ec0\u4e48\u6570\u636e\uff0c\u90fd\u5e94\u8be5\u88ab\u7ba1\u7406\u8d77\u6765\uff0c\u56e0\u6b64\u8fd9\u4e9bPage\u9875\u76ee\u5f55\u4e5f\u9700\u8981\u7528\u53cc\u94fe\u8868\u8fde\u63a5\u8d77\u6765\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9875\u76ee\u5f55\u4e4b\u4e0a\u518d\u521b\u5efa\u9875\u76ee\u5f55<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c31\u7b97\u7ed9\u5404\u4e2aPage\u7ed3\u6784\u4f53\u4e5f\u5efa\u7acb\u4e86\u9875\u76ee\u5f55\uff0c\u4f46\u968f\u7740\u6570\u636e\u91cf\u4e0d\u65ad\u589e\u5927\uff0c\u9875\u76ee\u5f55\u7684\u6570\u91cf\u4e5f\u4f1a\u8d8a\u6765\u8d8a\u591a\uff0c\u8fd9\u65f6\u5728\u904d\u5386\u9875\u76ee\u5f55\u5bfb\u627e\u76ee\u6807Page\u65f6\u672c\u8d28\u8fdb\u884c\u7684\u8fd8\u662f\u7ebf\u6027\u904d\u5386\u3002<\/li>\n\n\n\n<li>\u7c7b\u4f3c\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u4e0d\u65ad\u5728\u9875\u76ee\u5f55\u4e4b\u4e0a\u518d\u521b\u5efa\u9875\u76ee\u5f55\uff0c\u6700\u7ec8\u5c31\u4e00\u5b9a\u80fd\u591f\u5f97\u5230\u4e00\u4e2a\u5165\u53e3\u9875\u76ee\u5f55\uff0c\u8fd9\u65f6\u5728\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u53ef\u4ee5\u4ece\u5165\u53e3\u9875\u76ee\u5f55\u5f00\u59cb\u4e0d\u65ad\u67e5\u8be2\u9875\u76ee\u5f55\uff0c\u6700\u7ec8\u627e\u5230\u76ee\u6807\u6570\u636e\u6240\u5728\u7684Page\uff0c\u7136\u540e\u518d\u5728\u8be5Page\u5185\u90e8\u627e\u5230\u76ee\u6807\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u7ec8\u6784\u5efa\u51fa\u6765\u7684\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/053ad0bdb200421ca2ed8bd400804bd1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/053ad0bdb200421ca2ed8bd400804bd1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u7ec8\u6784\u5efa\u51fa\u6765\u7684\u5b9e\u9645\u5c31\u662f\u4e00\u68f5B+\u6811\uff0c\u8fd9\u68f5B+\u6811\u5c31\u662fInnoDB\u7684\u7d22\u5f15\u7ed3\u6784\uff0c\u5176\u4e2d\u6bcf\u4e00\u5c42Page\u7684\u4f5c\u7528\u5c31\u662f\u52a0\u901f\u5b83\u7684\u4e0b\u4e00\u5c42\u7684\u67e5\u627e\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u6211\u4eec\u521b\u5efa\u8868\u65f6\u8bbe\u7f6e\u4e86\u4e3b\u952e\uff0c\u90a3\u4e48MySQL\u5728\u5e95\u5c42\u5c31\u4f1a\u81ea\u52a8\u5c06\u8fd9\u5f20\u8868\u4e2d\u7684\u7684\u6570\u636e\u4ee5B+\u6811\u7684\u5f62\u5f0f\u7ec4\u7ec7\u8d77\u6765\uff0c\u4fdd\u5b58\u5728Buffer Pool\u5f53\u4e2d\uff0c\u5f53\u6211\u4eec\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2\u8fd9\u68f5B+\u6811\u6765\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/li>\n\n\n\n<li>MySQL\u4e2d\u53ef\u80fd\u540c\u65f6\u6709\u5927\u91cf\u7684\u8868\u6b63\u5728\u88ab\u5904\u7406\uff0c\u56e0\u6b64Buffer Pool\u4e2d\u53ef\u80fd\u4f1a\u5b58\u5728\u591a\u4e2a\u7d22\u5f15\u7ed3\u6784\uff0c\u4e5f\u5c31\u662f\u540c\u65f6\u5b58\u5728\u591a\u4e2aB+\u6811\u7ed3\u6784\uff0c\u5f53\u6211\u4eec\u67e5\u8be2\u8868\u65f6\u8bbf\u95ee\u7684\u5c31\u662f\u8fd9\u5f20\u8868\u5bf9\u5e94\u7684B+\u6811\u7ed3\u6784\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>B+\u6811\u4e2d\u7684Page\u7ed3\u70b9\u662f\u5426\u9700\u8981\u5168\u91cf\u52a0\u5165\u5230Buffer Pool\u4e2d\uff1f<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u5bf9MySQL\u4e2d\u7684\u67d0\u5f20\u8868\u8fdb\u884c\u589e\u5220\u67e5\u6539\u64cd\u4f5c\u65f6\uff0c\u4e0d\u9700\u8981\u5c06\u5176\u5bf9\u5e94B+\u6811\u7684\u6240\u6709\u7ed3\u70b9\u5168\u91cf\u52a0\u5165\u5230Buffer Pool\u4e2d\uff0c\u751a\u81f3\u5728\u521a\u5f00\u59cb\u65f6\u53ea\u9700\u8981\u5c06B+\u6811\u7684\u6839\u7ed3\u70b9\u52a0\u5165\u5230Buffer Pool\u4e2d\u3002<\/li>\n\n\n\n<li>\u5f53\u540e\u7eed\u8bbf\u95ee\u8868\u4e2d\u7684\u6570\u636e\u65f6\uff0c\u518d\u5c06\u8be5\u6570\u636e\u5bf9\u5e94\u8def\u5f84\u4e0a\u7684\u7ed3\u70b9\u52a0\u5165\u5230Buffer Pool\u4e2d\u5373\u53ef\uff0c\u5bf9\u4e8e\u5176\u4ed6\u4e0d\u9700\u8981\u7684\u7ed3\u70b9\u6839\u672c\u4e0d\u7528\u52a0\u5165\u5230Buffer Pool\u4e2d\uff0c\u8fd9\u4e00\u70b9\u548c\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u9875\u8868\u662f\u5f88\u50cf\u7684\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u5728\u5237\u65b0\u6570\u636e\u65f6\u4e5f\u4e0d\u9700\u8981\u5c06B+\u6811\u4e2d\u6240\u6709\u7684\u7ed3\u70b9\u90fd\u8fdb\u884c\u5237\u65b0\uff0c\u5728Page\u7ed3\u6784\u4f53\u4e2d\u6709\u4e00\u4e2a\u6807\u8bb0\u4f4d\u7528\u6765\u6807\u8bb0\u5f53\u524dPage\u662f\u5426\u88ab\u4fee\u6539\u8fc7\uff0c\u5982\u679c\u88ab\u4fee\u6539\u8fc7\u5219\u8bf4\u660e\u8fd9\u662f\u4e00\u4e2a\u810f\u6570\u636e\uff0c\u5728\u5237\u65b0\u6570\u636e\u65f6\u53ea\u6709\u810f\u6570\u636e\u624d\u9700\u8981\u88ab\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\u3002<\/li>\n\n\n\n<li>\u7531\u4e8eB+\u6811\u4e2d\u7684\u7ed3\u70b9\u90fd\u662f16KB\u5927\u5c0f\u7684Page\uff0c\u56e0\u6b64\u65e0\u8bba\u662f\u5237\u65b0\u6570\u636e\u5230\u78c1\u76d8\u51fd\u6570\u4ece\u78c1\u76d8\u52a0\u8f7d\u6570\u636e\u5230Buffer Pool\uff0c\u90fd\u662f\u4ee5Page\u4e3a\u5355\u4f4d\u8fdb\u884c\u7684\uff0c\u8fd9\u4e5f\u5c31\u662f\u6240\u8c13\u7684MySQL\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662fPage\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u628a\u8fd9\u9897B+\u6811\u9006\u65f6\u9488\u65cb\u8f6c90\u00b0\uff0c\u5c31\u4f1a\u53d1\u73b0\u8fd9\u5176\u5b9e\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u9875\u8868\u7ed3\u6784\uff0c\u672c\u8d28\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u9875\u8868\u4e5f\u662fB+\u6811\u7ed3\u6784\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/b3db7abf2b6d4022813f2cdad32137f2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/b3db7abf2b6d4022813f2cdad32137f2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u4ee532\u4f4d\u5e73\u53f0\u4e3a\u4f8b\uff0c\u9875\u8868\u5c06\u4e00\u4e2a\u865a\u62df\u5730\u5740\u8f6c\u6362\u6210\u7269\u7406\u5730\u5740\u7684\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9009\u62e9\u865a\u62df\u5730\u5740\u7684\u524d10\u4e2a\u6bd4\u7279\u4f4d\u5728\u9875\u76ee\u5f55\u5f53\u4e2d\u8fdb\u884c\u67e5\u627e\uff0c\u627e\u5230\u5bf9\u5e94\u7684\u9875\u8868\u3002<\/li>\n\n\n\n<li>\u518d\u7ee7\u7eed\u9009\u62e9\u865a\u62df\u5730\u5740\u540e\u7eed\u768410\u4e2a\u6bd4\u7279\u4f4d\u5728\u5bf9\u5e94\u7684\u9875\u8868\u5f53\u4e2d\u8fdb\u884c\u67e5\u627e\uff0c\u627e\u5230\u7269\u7406\u5185\u5b58\u4e2d\u5bf9\u5e94\u9875\u6846\u7684\u8d77\u59cb\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u6700\u540e\u9009\u62e9\u865a\u62df\u5730\u5740\u4e2d\u5269\u4e0b\u768412\u4e2a\u6bd4\u7279\u4f4d\u4f5c\u4e3a\u504f\u79fb\u91cf\uff0c\u4ece\u5bf9\u5e94\u9875\u6846\u7684\u8d77\u59cb\u5730\u5740\u5904\u5411\u540e\u8fdb\u884c\u504f\u79fb\uff0c\u6700\u7ec8\u5f97\u5230\u7684\u5c31\u662f\u8f6c\u6362\u540e\u7684\u7269\u7406\u5730\u5740\u3002<\/li>\n<\/ol>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>12\u4e2a\u6bd4\u7279\u4f4d\u67092^12\u79cd\u53d6\u503c\uff0c\u800c2^12\u5b57\u8282\u5bf9\u5e94\u7684\u5c31\u662f4KB\uff0c\u6240\u4ee5\u7269\u7406\u5185\u5b58\u4e2d\u4e00\u4e2a\u9875\u6846\u7684\u5927\u5c0f\u5c31\u662f4KB\uff0c\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u78c1\u76d8\u4ea4\u4e92\u7684\u57fa\u672c\u5355\u4f4d\u662f4KB\u7684\u539f\u56e0\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u9875\u8868\u4e2d\u7684\u5404\u4e2aB+\u6811\u7ed3\u70b9\u4e5f\u4e0d\u9700\u8981\u5168\u91cf\u52a0\u5165\u5230\u5185\u5b58\u4e2d\uff0c\u800c\u53ea\u9700\u8981\u52a0\u5165\u8bbf\u95ee\u5230\u7684\u7ed3\u70b9\u5373\u53ef\uff0c\u6240\u4ee5\u9875\u8868\u5360\u7528\u7684\u5185\u5b58\u5927\u5c0f\u5b9e\u9645\u662f\u53ef\u63a7\u7684\uff0c\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48\u4e8c\u7ea7\u9875\u8868\u53ef\u884c\u7684\u539f\u56e0\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7d22\u5f15\u7ed3\u6784\u53ef\u4ee5\u91c7\u7528\u54ea\u4e9b\u6570\u636e\u7ed3\u6784<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7d22\u5f15\u7ed3\u6784\u53ef\u4ee5\u91c7\u7528\u54ea\u4e9b\u6570\u636e\u7ed3\u6784<\/p>\n<\/blockquote>\n\n\n\n<p>\u9664\u4e86InnoDB\u5b58\u50a8\u5f15\u64ce\u6240\u91c7\u7528\u7684B+\u6811\u7ed3\u6784\uff0c\u7d22\u5f15\u7ed3\u6784\u8fd8\u53ef\u4ee5\u91c7\u7528\u54ea\u4e9b\u6570\u636e\u7ed3\u6784\u5462\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] \u94fe\u8868\uff1a\u67e5\u627e\u65f6\u662f\u7ebf\u6027\u904d\u5386\uff0c\u6548\u7387\u592a\u4f4e\u3002<\/li>\n\n\n\n<li>[ ] \u666e\u901a\u4e8c\u53c9\u641c\u7d22\u6811\uff1a\u53ef\u80fd\u9000\u5316\u6210\u7ebf\u6027\u7ed3\u6784\uff0c\u8fd9\u65f6\u67e5\u627e\u8fd8\u662f\u7ebf\u6027\u904d\u5386\u3002<\/li>\n\n\n\n<li>[ ] AVL\u6811\u548c\u7ea2\u9ed1\u6811\uff1a\u867d\u7136\u4fdd\u8bc1\u4e86\u4e8c\u53c9\u6811\u662f\u7edd\u5bf9\u6216\u8fd1\u4f3c\u5e73\u8861\u7684\uff0c\u4e0d\u4f1a\u9000\u5316\u6210\u7ebf\u6027\u7ed3\u6784\uff0c\u4f46AVL\u6811\u548c\u7ea2\u9ed1\u6811\u90fd\u662f\u4e8c\u53c9\u6811\u7ed3\u6784\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u6811\u7684\u5c42\u9ad8\u4f1a\u6bd4\u8f83\u9ad8\uff0c\u800c\u67e5\u8be2\u6570\u636e\u65f6\u90fd\u662f\u4ece\u6839\u7ed3\u70b9\u5f00\u59cb\u5411\u4e0b\u8fdb\u884c\u67e5\u627e\u7684\uff0c\u8fd9\u4e5f\u5c31\u610f\u5473\u7740\u5728\u67e5\u8be2\u8fc7\u7a0b\u4e2d\u9700\u8981\u904d\u5386\u66f4\u591a\u7ed3\u70b9\uff0c\u5982\u679c\u8fd9\u4e9b\u7ed3\u70b9\u8fd8\u6ca1\u6709\u88ab\u52a0\u8f7d\u5230Buffer Pool\u4e2d\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u8fdb\u884c\u66f4\u591a\u6b21\u7684IO\u64cd\u4f5c\uff0c\u6240\u4ee5\u6700\u7ec8\u6ca1\u6709\u9009\u62e9\u5176\u4f5c\u4e3a\u7d22\u5f15\u7ed3\u6784\u3002<\/li>\n\n\n\n<li>[x] \u54c8\u5e0c\u8868\uff1a\u5b98\u65b9\u7684\u7d22\u5f15\u5b9e\u73b0\u65b9\u5f0f\u4e2dMySQL\u662f\u652f\u6301HASH\u7684\uff0c\u53ea\u4e0d\u8fc7InnoDB\u548cMyISAM\u5b58\u50a8\u5f15\u64ce\u5e76\u4e0d\u652f\u6301\u3002\u54c8\u5e0c\u8868\u7684\u4f18\u70b9\u5c31\u662f\u5b83\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662f<code>O(1)<\/code>\u7684\uff0c\u4f46\u54c8\u5e0c\u8868\u4e5f\u6709\u4e00\u4e2a\u7f3a\u70b9\u5c31\u662f\u4e0d\u5229\u4e8e\u8fdb\u884c\u6570\u636e\u7684\u8303\u56f4\u67e5\u627e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0b\u9762\u662f\u51e0\u4e2a\u5e38\u89c1\u7684\u5b58\u50a8\u5f15\u64ce\uff0c\u4e0e\u5176\u6240\u652f\u6301\u7684\u7d22\u5f15\u7c7b\u578b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u5b58\u50a8\u5f15\u64ce<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u652f\u6301\u7684\u7d22\u5f15\u7c7b\u578b<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">InnoDB<\/td><td class=\"has-text-align-center\" data-align=\"center\">BTREE<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">MyISAM<\/td><td class=\"has-text-align-center\" data-align=\"center\">BTREE<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">MEMORY\/HEAP<\/td><td class=\"has-text-align-center\" data-align=\"center\">HASH\u3001BTREE<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">NDB<\/td><td class=\"has-text-align-center\" data-align=\"center\">HASH\u3001BTREE<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>B\u6811 VS B+\u6811<\/p>\n<\/blockquote>\n\n\n\n<p>B+\u6811\u662fB\u6811\u7684\u4e00\u79cd\u53d8\u5f62\u7ed3\u6784\uff0c\u90a3\u4e3a\u4ec0\u4e48\u6211\u4eec\u6ca1\u6709\u91c7\u7528\u666e\u901a\u7684B\u6811\u4f5c\u4e3a\u7d22\u5f15\u7ed3\u6784\u5462\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9996\u5148\uff0c\u666e\u901aB\u6811\u4e2d\u7684\u6240\u6709\u7ed3\u70b9\u4e2d\u90fd\u540c\u65f6\u5305\u62ec\u7d22\u5f15\u4fe1\u606f\u548c\u6570\u636e\u4fe1\u606f\uff0c\u7531\u4e8e\u4e00\u4e2aPage\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u56e0\u6b64\u975e\u53f6\u5b50\u7ed3\u70b9\u4e2d\u5982\u679c\u5305\u542b\u4e86\u6570\u636e\u4fe1\u606f\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7ed3\u70b9\u4e2d\u80fd\u591f\u5b58\u50a8\u7684\u7d22\u5f15\u4fe1\u606f\u4e00\u5b9a\u4f1a\u53d8\u5c11\uff0c\u8fd9\u65f6\u8fd9\u68f5\u6811\u5f62\u7ed3\u6784\u4e00\u5b9a\u4f1a\u53d8\u5f97\u66f4\u9ad8\u66f4\u7626\uff0c\u5f53\u67e5\u8be2\u6570\u636e\u65f6\u5c31\u53ef\u80fd\u9700\u8981\u4e0e\u78c1\u76d8\u8fdb\u884c\u66f4\u591a\u6b21\u7684IO\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u5176\u6b21\uff0c\u666e\u901aB\u6811\u4e2d\u7684\u5404\u4e2a\u53f6\u5b50\u7ed3\u70b9\u4e4b\u95f4\u6ca1\u6709\u8fde\u63a5\u8d77\u6765\uff0c\u8fd9\u5c06\u4e0d\u5229\u4e8e\u8fdb\u884c\u6570\u636e\u7684\u8303\u56f4\u67e5\u627e\uff0c\u800cB+\u6811\u7684\u5404\u4e2a\u53f6\u5b50\u7ed3\u70b9\u4e4b\u95f4\u662f\u8fde\u63a5\u8d77\u6765\u7684\uff0c\u5f53\u6211\u4eec\u8fdb\u884c\u8303\u56f4\u67e5\u627e\u65f6\uff0c\u76f4\u63a5\u5148\u627e\u5230\u7b2c\u4e00\u4e2a\u6570\u636e\u7136\u540e\u7ee7\u7eed\u5411\u540e\u904d\u5386\u627e\u5230\u4e4b\u540e\u7684\u6570\u636e\u5373\u53ef\uff0c\u56e0\u6b64\u5c06\u5404\u4e2a\u53f6\u5b50\u7ed3\u70b9\u8fde\u63a5\u8d77\u6765\u66f4\u6709\u5229\u4e8e\u8fdb\u884c\u6570\u636e\u7684\u8303\u56f4\u67e5\u627e\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u805a\u7c07\u7d22\u5f15 VS \u975e\u805a\u7c07\u7d22\u5f15<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>MyISAM\u5b58\u50a8\u5f15\u64ce &#8211; \u4e3b\u952e\u7d22\u5f15\u7ed3\u6784<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e4b\u524d\u63a8\u5bfc\u7684\u4e3b\u952e\u7d22\u5f15\u7ed3\u6784\u662fInnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u4e3b\u952e\u7d22\u5f15\u7ed3\u6784\uff0c\u800cMyISAM\u5b58\u50a8\u5f15\u64ce\u540c\u6837\u91c7\u7528B+\u6811\u4f5c\u4e3a\u7d22\u5f15\u7684\u57fa\u672c\u6570\u636e\u7ed3\u6784\u3002<\/li>\n\n\n\n<li>\u4e0eInnoDB\u5b58\u50a8\u5f15\u64ce\u7684B+\u6811\u4e0d\u540c\u7684\u662f\uff0cMyISAM\u5b58\u50a8\u5f15\u64ce\u7684B+\u6811\u7684\u53f6\u5b50\u7ed3\u70b9\u5b58\u653e\u7684\u4e0d\u662f\u6570\u636e\u8bb0\u5f55\uff0c\u800c\u662f\u6570\u636e\u8bb0\u5f55\u5bf9\u5e94\u7684\u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u4e0b\u56fe\u4e3aMyISAM\u5b58\u50a8\u5f15\u64ce\u7684\u4e3b\u952e\u7d22\u5f15\u7ed3\u6784\uff0c\u5176\u4e2dCol1\u4e3a\u4e3b\u952e\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/e3ef7f88cbe449d9a33e17f89f25cecf.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/e3ef7f88cbe449d9a33e17f89f25cecf.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>MyISAM\u5b58\u50a8\u5f15\u64ce-\u666e\u901a\u7d22\u5f15\u7ed3\u6784<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MyISAM\u5b58\u50a8\u5f15\u64ce\u7684\u666e\u901a\u7d22\u5f15\u91c7\u7528\u7684\u4e5f\u662fB+\u6811\u7ed3\u6784\uff0c\u4e0e\u4e3b\u952e\u7d22\u5f15\u552f\u4e00\u4e0d\u540c\u7684\u5730\u65b9\u5c31\u662f\u666e\u901a\u7d22\u5f15\u7684B+\u6811\u4e2d\u7684\u952e\u503c\u53ef\u4ee5\u91cd\u590d\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\u4e00\u5f20\u8868\u53ef\u80fd\u4f1a\u540c\u65f6\u5b58\u5728\u591a\u4e2aB+\u6811\u7ed3\u6784\uff0c\u4f46\u7531\u4e8eMyISAM\u5b58\u50a8\u5f15\u64ce\u7684B+\u6811\u53f6\u5b50\u7ed3\u70b9\u4e2d\uff0c\u5b58\u50a8\u7684\u662f\u5bf9\u5e94\u7684\u6570\u636e\u8bb0\u5f55\u7684\u5730\u5740\uff0c\u56e0\u6b64\u6709\u6548\u6570\u636e\u53ea\u4f1a\u5b58\u50a8\u4e00\u4efd\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u4e0b\u56fe\u4e3aMyISAM\u5b58\u50a8\u5f15\u64ce\u7684\u666e\u901a\u7d22\u5f15\u7ed3\u6784\uff0c\u5176\u4e2dCol2\u4e3a\u7d22\u5f15\u5217\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/cce57962d7314466ab3735a8ce15c969.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/cce57962d7314466ab3735a8ce15c969.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>InnoDB\u5b58\u50a8\u5f15\u64ce-\u666e\u901a\u7d22\u5f15\u7ed3\u6784<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>InnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u666e\u901a\u7d22\u5f15\u91c7\u7528\u7684\u4e5f\u662fB+\u6811\u7ed3\u6784\uff0c\u4f46\u666e\u901a\u7d22\u5f15\u7684B+\u6811\u4e2d\u7684\u952e\u503c\u53ef\u4ee5\u91cd\u590d\uff0c\u5e76\u4e14B+\u6811\u7684\u53f6\u5b50\u7ed3\u70b9\u4e2d\u5b58\u50a8\u7684\u4e0d\u662f\u6570\u636e\u8bb0\u5f55\uff0c\u800c\u662f\u5bf9\u5e94\u6570\u636e\u8bb0\u5f55\u7684\u4e3b\u952e\u503c\u3002<\/li>\n\n\n\n<li>\u5f53\u6839\u636e\u666e\u901a\u7d22\u5f15\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u4f1a\u5148\u67e5\u627e\u666e\u901a\u7d22\u5f15\u5bf9\u5e94\u7684B+\u6811\u627e\u5230\u76ee\u6807\u8bb0\u5f55\u7684\u4e3b\u952e\u503c\uff0c\u7136\u540e\u518d\u67e5\u627e\u4e3b\u952e\u7d22\u5f15\u5bf9\u5e94\u7684B+\u6811\u627e\u5230\u76ee\u6807\u8bb0\u5f55\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5c31\u53eb\u505a\u56de\u8868\u67e5\u8be2\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u4e0b\u56fe\u4e3aInnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u666e\u901a\u7d22\u5f15\u7ed3\u6784\uff0c\u5176\u4e2dCol3\u4e3a\u7d22\u5f15\u5217\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/a2534a1199f14f8b92fd88eb524832c0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a2534a1199f14f8b92fd88eb524832c0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>InnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u666e\u901a\u7d22\u5f15\u7684B+\u6811\u53f6\u5b50\u7ed3\u70b9\u4e2d\u6ca1\u6709\u4fdd\u5b58\u6574\u6761\u6570\u636e\u8bb0\u5f55\uff0c\u662f\u4e3a\u4e86\u8282\u7701\u7a7a\u95f4\uff0c\u56e0\u4e3a\u540c\u4e00\u5f20\u8868\u53ef\u80fd\u4f1a\u521b\u5efa\u591a\u4e2a\u666e\u901a\u7d22\u5f15\uff0c\u6bcf\u4e2a\u666e\u901a\u7d22\u5f15\u7684B+\u6811\u4e2d\u90fd\u4fdd\u5b58\u4e00\u4efd\u6570\u636e\u4f1a\u9020\u6210\u6570\u636e\u5197\u4f59\uff0c\u6240\u4ee5\u901a\u8fc7\u56de\u8868\u67e5\u8be2\u4e3b\u952e\u7d22\u5f15\u5bf9\u5e94\u7684B+\u6765\u83b7\u53d6\u6574\u4e2a\u6570\u636e\u8bb0\u5f55\uff0c\u8be5\u505a\u6cd5\u672c\u8d28\u4e00\u79cd\u4ee5\u65f6\u95f4\u6362\u53d6\u7a7a\u95f4\u7684\u505a\u6cd5\u3002<\/li>\n\n\n\n<li>\u5f53\u6839\u636e\u666e\u901a\u7d22\u5f15\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u5176\u5b9e\u4e5f\u4e0d\u4e00\u5b9a\u9700\u8981\u8fdb\u884c\u56de\u8868\u67e5\u8be2\uff0c\u56e0\u4e3a\u6709\u53ef\u80fd\u6211\u4eec\u8981\u67e5\u8be2\u7684\u5c31\u662f\u8fd9\u6761\u8bb0\u5f55\u5bf9\u5e94\u7684\u4e3b\u952e\u503c\uff0c\u56e0\u6b64\u67e5\u8be2\u5b8c\u666e\u901a\u7d22\u5f15\u5bf9\u5e94B+\u6811\u540e\u5373\u53ef\u5b8c\u6210\u67e5\u8be2\u3002<\/li>\n\n\n\n<li>\u91c7\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\u5efa\u7acb\u7684\u6bcf\u5f20\u8868\u90fd\u4f1a\u6709\u4e00\u4e2a\u4e3b\u952e\uff0c\u5c31\u7b97\u7528\u6237\u6ca1\u6709\u8bbe\u7f6e\uff0cInnoDB\u4e5f\u4f1a\u81ea\u52a8\u5e2e\u4f60\u521b\u5efa\u4e00\u4e2a\u4e0d\u53ef\u89c1\u7684\u4e3b\u952e\uff0c\u56e0\u4e3a\u5b8c\u6574\u6570\u636e\u8bb0\u5f55\u53ea\u4f1a\u5b58\u50a8\u5728\u4e3b\u952e\u7d22\u5f15\u5bf9\u5e94\u7684B+\u6811\u4e2d\u7684\uff0c\u56e0\u6b64\u91c7\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\u5efa\u7acb\u7684\u8868\u5fc5\u987b\u6709\u4e3b\u952e\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u805a\u7c07\u7d22\u5f15 VS \u975e\u805a\u7c07\u7d22\u5f15<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u805a\u7c07\u7d22\u5f15\uff1a<\/strong> \u50cfInnoDB\u5b58\u50a8\u5f15\u64ce\u8fd9\u79cd\uff0c\u5c06\u6570\u636e\u8bb0\u5f55\u4e0e\u7d22\u5f15\u7ed3\u6784\u653e\u5728\u4e00\u8d77\u7684\u7d22\u5f15\u65b9\u6848\uff0c\u53eb\u505a\u805a\u7c07\u7d22\u5f15\u3002<\/li>\n\n\n\n<li><strong>\u975e\u805a\u7c07\u7d22\u5f15\uff1a<\/strong> \u50cfMyISAM\u5b58\u50a8\u5f15\u64ce\u8fd9\u79cd\uff0c\u5c06\u6570\u636e\u8bb0\u5f55\u4e0e\u7d22\u5f15\u7ed3\u6784\u5206\u79bb\u7684\u7d22\u5f15\u65b9\u6848\uff0c\u53eb\u505a\u975e\u805a\u7c07\u7d22\u5f15\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u91c7\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\u521b\u5efa\u8868\u65f6\uff0c\u5728\u6570\u636e\u5e93\u5bf9\u5e94\u7684\u76ee\u5f55\u4e0b\u4f1a\u65b0\u589e\u4e24\u4e2a\u6587\u4ef6\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/309d1130c0124789a439fa9643eed195.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/309d1130c0124789a439fa9643eed195.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53\u91c7\u7528MyISAM\u5b58\u50a8\u5f15\u64ce\u521b\u5efa\u8868\u65f6\uff0c\u5728\u6570\u636e\u5e93\u5bf9\u5e94\u7684\u76ee\u5f55\u4e0b\u4f1a\u65b0\u589e\u4e09\u4e2a\u6587\u4ef6\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/c9fbabca5ba945cebf5a4c47cf38c301.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c9fbabca5ba945cebf5a4c47cf38c301.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul 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src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e8c<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u521b\u5efa\u8868\u7684\u6700\u540e\uff0c\u6307\u5b9a\u67d0\u5217\u6216\u67d0\u51e0\u5217\u4e3a\u4e3b\u952e\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/77e96cdd82a5439e9b37f71741e7d44e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/77e96cdd82a5439e9b37f71741e7d44e.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e09<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u8868\u540e\uff0c\u4f7f\u7528alter\u547d\u4ee4\u7ed9\u6307\u5b9a\u5b57\u6bb5\u6dfb\u52a0\u4e3b\u952e\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/cbc54e72949d46d786128744d10c29ce.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/cbc54e72949d46d786128744d10c29ce.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e3b\u952e\u7d22\u5f15\u7684\u7279\u70b9<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e3b\u952e\u7d22\u5f15\u7684\u7279\u70b9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul 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class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/5c78eb01240a4dd487371212c44154e4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/5c78eb01240a4dd487371212c44154e4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e8c<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u521b\u5efa\u8868\u7684\u6700\u540e\uff0c\u6307\u5b9a\u67d0\u5217\u6216\u67d0\u51e0\u5217\u4e3a\u552f\u4e00\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/7485aec3d80f493ab3984729eddbde6c.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/7485aec3d80f493ab3984729eddbde6c.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e09<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u8868\u540e\uff0c\u4f7f\u7528alter\u547d\u4ee4\u7ed9\u6307\u5b9a\u5b57\u6bb5\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/8b4b0f89edac4340abbe61ada8771b0a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/8b4b0f89edac4340abbe61ada8771b0a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u552f\u4e00\u7d22\u5f15\u7684\u7279\u70b9<\/p>\n<\/blockquote>\n\n\n\n<p>\u552f\u4e00\u7d22\u5f15\u7684\u7279\u70b9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul 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wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e00<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u521b\u5efa\u8868\u7684\u6700\u540e\uff0c\u6307\u5b9a\u67d0\u5217\u6216\u67d0\u51e0\u5217\u4e3a\u666e\u901a\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/5d915073f35047599197929e0362a0f2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/5d915073f35047599197929e0362a0f2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e8c<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u8868\u540e\uff0c\u4f7f\u7528alter\u547d\u4ee4\u7ed9\u6307\u5b9a\u5b57\u6bb5\u6dfb\u52a0\u666e\u901a\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/db0762b1edc74ea1aa04907192a703fe.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/db0762b1edc74ea1aa04907192a703fe.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e09<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u8868\u540e\uff0c\u4f7f\u7528create\u547d\u4ee4\u7ed9\u6307\u5b9a\u5b57\u6bb5\u521b\u5efa\u666e\u901a\u7d22\u5f15\uff0c\u5e76\u6307\u5b9a\u7d22\u5f15\u540d\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/e493ae459557450aaf7fb35f989770aa.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/e493ae459557450aaf7fb35f989770aa.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u666e\u901a\u7d22\u5f15\u7684\u7279\u70b9<\/p>\n<\/blockquote>\n\n\n\n<p>\u666e\u901a\u7d22\u5f15\u7684\u7279\u70b9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u8868\u4e2d\uff0c\u53ef\u4ee5\u6709\u591a\u4e2a\u666e\u901a\u7d22\u5f15\uff0c\u4e00\u4e2a\u666e\u901a\u7d22\u5f15\u53ef\u4ee5\u7531\u591a\u4e2a\u5217\u540c\u65f6\u627f\u62c5\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u666e\u901a\u7d22\u5f15\u7684\u5217\uff0c\u5176\u5217\u503c\u53ef\u4ee5\u4e3aNULL\uff0c\u4e5f\u53ef\u4ee5\u91cd\u590d\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u521b\u5efa\u5168\u6587\u7d22\u5f15<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5168\u6587\u7d22\u5f15\u6848\u4f8b<\/p>\n<\/blockquote>\n\n\n\n<p>\u5168\u6587\u7d22\u5f15\u6bd4\u8f83\u5e38\u89c1\u7684\u6848\u4f8b\u5c31\u662f\u5bf9\u6587\u7ae0\u4e2d\u7684\u8bcd\u8fdb\u884c\u641c\u7d22\uff0c\u6bd4\u5982\u4e0b\u9762\u521b\u5efa\u4e00\u4e2a\u6587\u7ae0\u8868\uff0c\u8868\u5f53\u4e2d\u5305\u542b\u6587\u7ae0\u7684id\u3001\u6587\u7ae0\u540d\u79f0\u3001\u6587\u7ae0\u5185\u5bb9\uff0c\u5e76\u5728\u521b\u5efa\u8868\u7684\u6700\u540e\u901a\u8fc7fulltext\u7ed9title\u548cbody\u5217\u521b\u5efa\u5168\u6587\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/d507c6e411b04c9189d76bfad5bd0e9f.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/d507c6e411b04c9189d76bfad5bd0e9f.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u4e0b\u9762\u5411\u8868\u5f53\u4e2d\u63d2\u5165\u4e00\u4e9b\u6d4b\u8bd5\u6570\u636e\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img-blog.csdnimg.cn\/7d2a7756d2b54afa96ae8ee23b9c3d7a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img-blog.csdnimg.cn\/7d2a7756d2b54afa96ae8ee23b9c3d7a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5982\u679c\u8981\u67e5\u8be2\u54ea\u4e9b\u6587\u7ae0\u4e2d\u5305\u542bdatabase\u5173\u952e\u5b57\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6a21\u7cca\u5339\u914d\u8fdb\u884c\u67e5\u627e\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/0153dbd423144fefa0a496f82f2b9ba9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/0153dbd423144fefa0a496f82f2b9ba9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u4f46\u5b9e\u9645\u8fd9\u79cd\u67e5\u627e\u65b9\u5f0f\u5e76\u6ca1\u6709\u7528\u5230\u5168\u6587\u7d22\u5f15\uff0c\u5728SQL\u8bed\u53e5\u524d\u9762\u52a0\u4e0aexplain\uff0c\u53ef\u4ee5\u770b\u5230key\u5bf9\u5e94\u7684\u503c\u4e3aNULL\uff0c\u8868\u793a\u8fd9\u6761SQL\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u6ca1\u6709\u7528\u5230\u4efb\u4f55\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/865fc76eebb14008a03758698fdbb878.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/865fc76eebb14008a03758698fdbb878.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5982\u679c\u8981\u901a\u8fc7\u5168\u6587\u7d22\u5f15\u6765\u67e5\u8be2\uff0c\u9700\u8981\u4f7f\u7528match against\u8fdb\u884c\u641c\u7d22\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/34bf836e807a4a33b5b0a06dec000562.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/34bf836e807a4a33b5b0a06dec000562.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5728\u8fd9\u6761SQL\u8bed\u53e5\u524d\u9762\u52a0\u4e0aexplain\uff0c\u53ef\u4ee5\u770b\u5230key\u5bf9\u5e94\u7684\u503c\u4e3atitle\uff0c\u8868\u793a\u8fd9\u6761SQL\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u7528\u5230\u4e86\u7d22\u5f15\u540d\u4e3atitle\u7684\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/8311e6019dc54c84af8d1def9e133577.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/8311e6019dc54c84af8d1def9e133577.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MyISAM\u5b58\u50a8\u5f15\u64ce\u662f\u652f\u6301\u5168\u6587\u7d22\u5f15\u7684\uff0c\u800cInnoDB\u5b58\u50a8\u5f15\u64ce\u662f\u57285.6\u4ee5\u540e\u624d\u5f00\u59cb\u652f\u6301\u5168\u6587\u7d22\u5f15\u7684\u3002<\/li>\n\n\n\n<li>\u540c\u65f6\u4f7f\u7528title\u548cbody\u5efa\u7acb\u5168\u6587\u7d22\u5f15\u65f6\uff0c\u76f8\u5f53\u4e8e\u5efa\u7acb\u4e86\u4e00\u4e2a\u590d\u5408\u7d22\u5f15\uff0c\u9ed8\u8ba4\u4f1a\u9009\u62e9fulltext\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5217\u540d\u4f5c\u4e3a\u8fd9\u4e2a\u590d\u5408\u7d22\u5f15\u7684\u7d22\u5f15\u540d\uff0c\u6240\u4ee5\u8fd9\u91ccexplain\u4e2dkey\u5bf9\u5e94\u7684\u7d22\u5f15\u540d\u4e3atitle\u3002<\/li>\n\n\n\n<li>\u7531\u4e8e\u662ftitle\u548cbody\u5171\u540c\u5efa\u7acb\u7684\u5168\u6587\u7d22\u5f15\uff0c\u6240\u4ee5\u5982\u679c\u6587\u7ae0\u5f53\u4e2d\u6ca1\u6709\u51fa\u73b0\u5173\u952e\u5b57\uff0c\u4f46\u6587\u7ae0\u540d\u79f0\u4e2d\u51fa\u73b0\u4e86\u5173\u952e\u5b57\u5219\u4e5f\u4f1a\u88ab\u7b5b\u9009\u51fa\u6765\uff08\u5f53\u524d\u793a\u4f8b\u6ca1\u6709\u4f53\u73b0\u51fa\u6765\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u67e5\u8be2\u7d22\u5f15<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e00<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528<code>show keys from \u8868\u540d<\/code>SQL\u67e5\u8be2\uff0c\u6bd4\u5982\u67e5\u8be2articles\u8868\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/2932b0f65ea7457b9ce2d803e709b02e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2932b0f65ea7457b9ce2d803e709b02e.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Table\uff1a<\/strong> \u8868\u793a\u521b\u5efa\u7d22\u5f15\u7684\u8868\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li><strong>Non_unique\uff1a<\/strong> \u8868\u793a\u8be5\u7d22\u5f15\u662f\u5426\u662f\u552f\u4e00\u7d22\u5f15\uff0c\u5982\u679c\u662f\u5219\u4e3a0\uff0c\u5982\u679c\u4e0d\u662f\u5219\u4e3a1\u3002<\/li>\n\n\n\n<li><strong>Key_name\uff1a<\/strong> \u8868\u793a\u7d22\u5f15\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li><strong>Seq_in_index\uff1a<\/strong> \u8868\u793a\u8be5\u5217\u5728\u7d22\u5f15\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5982\u679c\u7d22\u5f15\u662f\u5355\u5217\u7684\uff0c\u5219\u8be5\u5217\u7684\u503c\u4e3a1\uff0c\u5982\u679c\u7d22\u5f15\u662f\u590d\u5408\u7d22\u5f15\uff0c\u5219\u8be5\u5217\u7684\u503c\u4e3a\u6bcf\u5217\u5728\u7d22\u5f15\u5b9a\u4e49\u4e2d\u7684\u987a\u5e8f\u3002<\/li>\n\n\n\n<li><strong>Column_name\uff1a<\/strong> \u8868\u793a\u5b9a\u4e49\u7d22\u5f15\u7684\u5217\u5b57\u6bb5\u3002<\/li>\n\n\n\n<li><strong>Collation\uff1a<\/strong> \u8868\u793a\u5217\u4ee5\u4f55\u79cd\u987a\u5e8f\u5b58\u50a8\u5728\u7d22\u5f15\u4e2d\uff0c\u201cA\u201d\u8868\u793a\u5347\u5e8f\uff0cNULL\u8868\u793a\u65e0\u5206\u7c7b\u3002<\/li>\n\n\n\n<li><strong>Cardinality\uff1a<\/strong> \u7d22\u5f15\u4e2d\u552f\u4e00\u503c\u6570\u76ee\u7684\u4f30\u8ba1\u503c\u3002\u57fa\u6570\u6839\u636e\u88ab\u5b58\u50a8\u4e3a\u6574\u6570\u7684\u7edf\u8ba1\u6570\u636e\u8ba1\u6570\uff0c\u6240\u4ee5\u5373\u4f7f\u5bf9\u4e8e\u5c0f\u578b\u8868\uff0c\u8be5\u503c\u4e5f\u6ca1\u6709\u5fc5\u8981\u662f\u7cbe\u786e\u7684\u3002\u57fa\u6570\u8d8a\u5927\uff0c\u5f53\u8fdb\u884c\u8054\u5408\u65f6\uff0cMySQL\u4f7f\u7528\u8be5\u7d22\u5f15\u7684\u673a\u4f1a\u5c31\u8d8a\u5927\u3002<\/li>\n\n\n\n<li><strong>Sub_part\uff1a<\/strong> \u8868\u793a\u5217\u4e2d\u88ab\u7f16\u5165\u7d22\u5f15\u7684\u5b57\u7b26\u7684\u6570\u91cf\uff0c\u82e5\u5217\u53ea\u662f\u90e8\u5206\u88ab\u7f16\u5165\u7d22\u5f15\uff0c\u5219\u8be5\u5217\u7684\u503c\u4e3a\u88ab\u7f16\u5165\u7d22\u5f15\u7684\u5b57\u7b26\u7684\u6570\u76ee\uff0c\u82e5\u6574\u5217\u88ab\u7f16\u5165\u7d22\u5f15\uff0c\u5219\u8be5\u5217\u7684\u503c\u4e3aNULL\u3002<\/li>\n\n\n\n<li><strong>Packed\uff1a<\/strong> \u6307\u793a\u5173\u952e\u5b57\u5982\u4f55\u88ab\u538b\u7f29\u3002\u82e5\u6ca1\u6709\u88ab\u538b\u7f29\uff0c\u5219\u503c\u4e3aNULL\u3002<\/li>\n\n\n\n<li><strong>Null\uff1a<\/strong> \u7528\u4e8e\u663e\u793a\u7d22\u5f15\u5217\u4e2d\u662f\u5426\u5305\u542bNULL\uff0c\u82e5\u5305\u542b\u5219\u4e3aYES\uff0c\u82e5\u4e0d\u5305\u542b\u5219\u4e3aNO\u3002<\/li>\n\n\n\n<li><strong>Index_type\uff1a<\/strong> \u663e\u793a\u7d22\u5f15\u4f7f\u7528\u7684\u7c7b\u578b\u548c\u65b9\u6cd5\uff08BTREE\u3001FULLTEXT\u3001HASH\u3001RTREE\uff09\u3002<\/li>\n\n\n\n<li><strong>Comment\uff1a<\/strong> \u663e\u793a\u8bc4\u6ce8\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e8c<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528<code>show index from \u8868\u540d<\/code>SQL\u67e5\u8be2\uff0c\u6bd4\u5982\u67e5\u8be2articles\u8868\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/4330075c70a24ace8e75b0dc88cf7a44.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/4330075c70a24ace8e75b0dc88cf7a44.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u5f0f\u4e09<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528<code>desc \u8868\u540d<\/code>SQL\u67e5\u8be2\uff08\u4fe1\u606f\u6bd4\u8f83\u7b80\u7565\uff09\uff0c\u6bd4\u5982\u67e5\u8be2articles\u8868\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/84a305c2c01740eea198b1a21fea11be.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/84a305c2c01740eea198b1a21fea11be.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u5220\u9664\u7d22\u5f15<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u521b\u5efa\u6d4b\u8bd5\u8868<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u7528\u6237\u8868\u7528\u4e8e\u6d4b\u8bd5\u7d22\u5f15\u7684\u5220\u9664\uff0c\u8868\u4e2d\u5305\u542b\u7528\u6237\u7684id\u3001\u59d3\u540d\u548c\u90ae\u7bb1\uff0c\u5e76\u5c06\u8fd9\u4e09\u5217\u5206\u522b\u8bbe\u7f6e\u4e3a\u4e3b\u952e\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u548c\u666e\u901a\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/55d866a38bd04e278c9c111fbd5c2a04.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/55d866a38bd04e278c9c111fbd5c2a04.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5220\u9664\u4e3b\u952e\u7d22\u5f15<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528<code>alter table \u8868\u540d drop primary key<\/code>SQL\u5373\u53ef\u5220\u9664\u4e3b\u952e\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/2627cd8296224cb5b412e0e6c3139052.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2627cd8296224cb5b412e0e6c3139052.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5220\u9664\u975e\u4e3b\u952e\u7d22\u5f15<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528<code>alter table \u8868\u540d drop index \u7d22\u5f15\u540d<\/code>SQL\u5373\u53ef\u5220\u9664\u6307\u5b9a\u7684\u975e\u4e3b\u952e\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/d741ea4df3994e6d832a6cbd24ea830a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/d741ea4df3994e6d832a6cbd24ea830a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u5916\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>drop index \u7d22\u5f15\u540d on \u8868\u540d<\/code>SQL\u4e5f\u53ef\u4ee5\u5220\u9664\u6307\u5b9a\u7684\u975e\u4e3b\u952e\u7d22\u5f15\u3002\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/313d470acacc4ce8b31e74ec0077c448.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/313d470acacc4ce8b31e74ec0077c448.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u8868\u53ea\u6709\u4e00\u4e2a\u4e3b\u952e\u7d22\u5f15\uff0c\u6240\u4ee5\u5728\u5220\u9664\u4e3b\u952e\u7d22\u5f15\u7684\u65f6\u5019\u4e0d\u7528\u6307\u660e\u7d22\u5f15\u540d\uff0c\u800c\u4e00\u4e2a\u8868\u4e2d\u53ef\u80fd\u6709\u591a\u4e2a\u975e\u4e3b\u952e\u7d22\u5f15\uff0c\u6240\u4ee5\u5728\u5220\u9664\u975e\u4e3b\u952e\u7d22\u5f15\u65f6\u9700\u8981\u6307\u660e\u7d22\u5f15\u540d\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7d22\u5f15\u521b\u5efa\u539f\u5219<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7d22\u5f15\u521b\u5efa\u539f\u5219<\/p>\n<\/blockquote>\n\n\n\n<p>\u7d22\u5f15\u521b\u5efa\u7684\u539f\u5219\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bd4\u8f83\u9891\u7e41\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6\u7684\u5b57\u6bb5\u5e94\u8be5\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>\u552f\u4e00\u6027\u592a\u5dee\u7684\u5b57\u6bb5\u4e0d\u9002\u5408\u5355\u72ec\u521b\u5efa\u7d22\u5f15\uff0c\u5373\u4f7f\u9891\u7e41\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6\u3002<\/li>\n\n\n\n<li>\u66f4\u65b0\u975e\u5e38\u9891\u7e41\u7684\u5b57\u6bb5\u4e0d\u9002\u5408\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>\u4e0d\u4f1a\u51fa\u73b0\u5728where\u5b50\u53e5\u4e2d\u7684\u5b57\u6bb5\u4e0d\u5e94\u8be5\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u65f6\u523b\u8981\u8bb0\u4f4f\uff0c\u521b\u5efa\u7d22\u5f15\u7684\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u63d0\u9ad8\u67e5\u8be2\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u7d22\u5f15\u7279\u6027 \u7d22\u5f15\u7684\u6982\u5ff5 \u7d22\u5f15\u7684\u6982\u5ff5 \u5e38\u89c1\u7684\u7d22\u5f15\u5206\u4e3a\uff1a \u7d22\u5f15\u7684\u4ef7\u503c \u4f7f\u7528\u5982\u4e0bSQL\u521b\u5efa\u4e00\u4e2a\u6d77\u91cf\u6570\u636e\u8868\uff1a  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,1],"tags":[55],"class_list":["post-199","post","type-post","status-publish","format-standard","hentry","category-mysql","category-learn","tag-55"],"_links":{"self":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=199"}],"version-history":[{"count":1,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/199\/revisions"}],"predecessor-version":[{"id":200,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/199\/revisions\/200"}],"wp:attachment":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}