{"id":201,"date":"2026-03-27T20:42:03","date_gmt":"2026-03-27T12:42:03","guid":{"rendered":"https:\/\/codergodv.xyz\/?p=201"},"modified":"2026-03-27T20:42:03","modified_gmt":"2026-03-27T12:42:03","slug":"mysql%e4%ba%8b%e5%8a%a1%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/codergodv.xyz\/index.php\/2026\/03\/27\/mysql%e4%ba%8b%e5%8a%a1%e7%ae%a1%e7%90%86\/","title":{"rendered":"MySQL\u4e8b\u52a1\u7ba1\u7406"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">MySQL\u4e8b\u52a1\u7ba1\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u52a1\u7684\u6982\u5ff5<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e8b\u52a1\u7684\u6982\u5ff5<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u7531\u4e00\u6761\u6216\u591a\u6761SQL\u8bed\u53e5\u7ec4\u6210\uff0c\u8fd9\u4e9b\u8bed\u53e5\u5728\u903b\u8f91\u4e0a\u5b58\u5728\u76f8\u5173\u6027\uff0c\u5171\u540c\u5b8c\u6210\u4e00\u4e2a\u4efb\u52a1\uff0c\u4e8b\u52a1\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u64cd\u4f5c\u91cf\u5927\uff0c\u590d\u6742\u5ea6\u9ad8\u7684\u6570\u636e\u3002\u6bd4\u5982\u8f6c\u8d26\u5c31\u6d89\u53ca\u591a\u6761SQL\u8bed\u53e5\uff0c\u5305\u62ec\u67e5\u8be2\u4f59\u989d\uff08select\uff09\u3001\u5728\u5f53\u524d\u8d26\u6237\u4e0a\u51cf\u53bb\u6307\u5b9a\u91d1\u989d\uff08update\uff09\u3001\u5728\u6307\u5b9a\u8d26\u6237\u4e0a\u52a0\u4e0a\u5bf9\u5e94\u91d1\u989d\uff08update\uff09\u7b49\uff0c\u5c06\u8fd9\u591a\u6761SQL\u8bed\u53e5\u6253\u5305\u4fbf\u6784\u6210\u4e86\u4e00\u4e2a\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li>MySQL\u540c\u4e00\u65f6\u523b\u53ef\u80fd\u5b58\u5728\u5927\u91cf\u4e8b\u52a1\uff0c\u5982\u679c\u4e0d\u5bf9\u8fd9\u4e9b\u4e8b\u52a1\u52a0\u4ee5\u63a7\u5236\uff0c\u5728\u6267\u884c\u65f6\u5c31\u53ef\u80fd\u4f1a\u51fa\u73b0\u95ee\u9898\u3002\u6bd4\u5982\u5355\u4e2a\u4e8b\u52a1\u5185\u90e8\u7684\u67d0\u4e9bSQL\u8bed\u53e5\u6267\u884c\u5931\u8d25\uff0c\u6216\u662f\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4efd\u6570\u636e\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\u4e00\u4e2a\u5b8c\u6574\u7684\u4e8b\u52a1\u5e76\u4e0d\u662f\u7b80\u5355\u7684SQL\u96c6\u5408\uff0c\u4e8b\u52a1\u8fd8\u9700\u8981\u6ee1\u8db3\u5982\u4e0b\u56db\u4e2a\u5c5e\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong> \u4e00\u4e2a\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\uff0c\u8981\u4e48\u5168\u90e8\u5b8c\u6210\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u5b8c\u6210\uff0c\u4e0d\u4f1a\u7ed3\u675f\u5728\u4e2d\u95f4\u67d0\u4e2a\u73af\u8282\u3002\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u5982\u679c\u53d1\u751f\u9519\u8bef\uff0c\u5219\u4f1a\u81ea\u52a8\u56de\u6eda\u5230\u4e8b\u52a1\u5f00\u59cb\u524d\u7684\u72b6\u6001\uff0c\u5c31\u50cf\u8fd9\u4e2a\u4e8b\u52a1\u4ece\u6765\u6ca1\u6709\u6267\u884c\u8fc7\u4e00\u6837\u3002<\/li>\n\n\n\n<li><strong>\u6301\u4e45\u6027\uff1a<\/strong> \u4e8b\u52a1\u5904\u7406\u7ed3\u675f\u540e\uff0c\u5bf9\u6570\u636e\u7684\u4fee\u6539\u5c31\u662f\u6c38\u4e45\u7684\uff0c\u5373\u4fbf\u7cfb\u7edf\u6545\u969c\u4e5f\u4e0d\u4f1a\u4e22\u5931\u3002<\/li>\n\n\n\n<li><strong>\u9694\u79bb\u6027\uff1a<\/strong> \u6570\u636e\u5e93\u5141\u8bb8\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4efd\u6570\u636e\uff0c\u9694\u79bb\u6027\u53ef\u4ee5\u4fdd\u8bc1\u591a\u4e2a\u4e8b\u52a1\u5728\u5e76\u53d1\u6267\u884c\u65f6\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u7531\u4e8e\u4ea4\u53c9\u6267\u884c\u800c\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u3002<\/li>\n\n\n\n<li><strong>\u4e00\u81f4\u6027\uff1a<\/strong> \u5728\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\u548c\u4e8b\u52a1\u7ed3\u675f\u4ee5\u540e\uff0c\u6570\u636e\u5e93\u7684\u5b8c\u6574\u578b\u6ca1\u6709\u88ab\u7834\u574f\uff0c\u8fd9\u8868\u793a\u5199\u5165\u7684\u8d44\u6599\u5fc5\u987b\u5b8c\u5168\u7b26\u5408\u6240\u6709\u7684\u9884\u8bbe\u89c4\u5219\uff0c\u8fd9\u5305\u542b\u8d44\u6599\u7684\u7cbe\u786e\u5ea6\u3001\u4e32\u8054\u578b\u4ee5\u53ca\u540e\u7eed\u6570\u636e\u5e93\u53ef\u4ee5\u81ea\u53d1\u6027\u5730\u5b8c\u6210\u9884\u5b9a\u7684\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0a\u9762\u7684\u56db\u4e2a\u5c5e\u6027\u7b80\u79f0ACID\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u539f\u5b50\u6027\uff08Atomicity\uff0c\u53c8\u79f0\u4e0d\u53ef\u5206\u5272\u6027\uff09\u3002<\/li>\n\n\n\n<li>\u4e00\u81f4\u6027\uff08Consistency\uff09\u3002<\/li>\n\n\n\n<li>\u9694\u79bb\u6027\uff08Isolation\uff0c\u53c8\u79f0\u72ec\u7acb\u6027\uff09\u3002<\/li>\n\n\n\n<li>\u6301\u4e45\u6027\uff08Durability\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>\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u4e8b\u52a1\uff1f<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u88abMySQL\u7f16\u5199\u8005\u8bbe\u8ba1\u51fa\u6765\uff0c\u672c\u8d28\u662f\u4e3a\u4e86\u5f53\u5e94\u7528\u7a0b\u5e8f\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u65f6\u5019\uff0c\u4e8b\u52a1\u80fd\u591f\u7b80\u5316\u6211\u4eec\u7684\u7f16\u7a0b\u6a21\u578b\uff0c\u4e0d\u9700\u8981\u7528\u6237\u81ea\u5df1\u53bb\u8003\u8651\u5404\u79cd\u5404\u6837\u7684\u6f5c\u5728\u9519\u8bef\u548c\u5e76\u53d1\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u5982\u679cMySQL\u53ea\u662f\u5355\u7eaf\u7684\u63d0\u4f9b\u6570\u636e\u5b58\u50a8\u670d\u52a1\uff0c\u90a3\u4e48\u7528\u6237\u5728\u8bbf\u95ee\u6570\u636e\u5e93\u65f6\u5c31\u9700\u8981\u81ea\u884c\u8003\u8651\u5404\u79cd\u6f5c\u5728\u95ee\u9898\uff0c\u5305\u62ec\u7f51\u7edc\u5f02\u5e38\u3001\u670d\u52a1\u5668\u5b95\u673a\u7b49\u3002\u56e0\u6b64\u4e8b\u52a1\u672c\u8d28\u662f\u4e3a\u4e86\u5e94\u7528\u670d\u52a1\u7684\uff0c\u800c\u4e0d\u662f\u4f34\u968f\u7740\u6570\u636e\u5e93\u7cfb\u7edf\u5929\u751f\u5c31\u6709\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u52a1\u7684\u7248\u672c\u652f\u6301<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e8b\u52a1\u7684\u7248\u672c\u652f\u6301<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7<code>show engines<\/code>\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u6570\u636e\u5e93\u5f15\u64ce\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\/720fda2282ed43aba6d3dada642c1aa5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/720fda2282ed43aba6d3dada642c1aa5.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>Engine\uff1a<\/strong> \u8868\u793a\u5b58\u50a8\u5f15\u64ce\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li><strong>Support\uff1a<\/strong> \u8868\u793a\u670d\u52a1\u5668\u5bf9\u5b58\u50a8\u5f15\u64ce\u7684\u652f\u6301\u7ea7\u522b\uff0cYES\u8868\u793a\u652f\u6301\uff0cNO\u8868\u793a\u4e0d\u652f\u6301\uff0cDEFAULT\u8868\u793a\u6570\u636e\u5e93\u9ed8\u8ba4\u4f7f\u7528\u7684\u5b58\u50a8\u5f15\u64ce\uff0cDISABLED\u8868\u793a\u652f\u6301\u5f15\u64ce\u4f46\u5df2\u5c06\u5176\u7981\u7528\u3002<\/li>\n\n\n\n<li><strong>Comment\uff1a<\/strong> \u8868\u793a\u5b58\u50a8\u5f15\u64ce\u7684\u7b80\u8981\u8bf4\u660e\u3002<\/li>\n\n\n\n<li><strong>Transactions\uff1a<\/strong> \u8868\u793a\u5b58\u50a8\u5f15\u64ce\u662f\u5426\u652f\u6301\u4e8b\u52a1\uff0c\u53ef\u4ee5\u770b\u5230InnoDB\u5b58\u50a8\u5f15\u64ce\u652f\u6301\u4e8b\u52a1\uff0c\u800cMyISAM\u5b58\u50a8\u5f15\u64ce\u4e0d\u652f\u6301\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li><strong>XA\uff1a<\/strong> \u8868\u793a\u5b58\u50a8\u5f15\u64ce\u662f\u5426\u652f\u6301XA\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li><strong>Savepoints\uff1a<\/strong> \u8868\u793a\u5b58\u50a8\u5f15\u64ce\u662f\u5426\u652f\u6301\u4fdd\u5b58\u70b9\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u67e5\u770b\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e8b\u52a1\u5e38\u89c1\u7684\u63d0\u4ea4\u65b9\u5f0f\u6709\u4e24\u79cd\uff0c\u5206\u522b\u662f\u81ea\u52a8\u63d0\u4ea4\u548c\u624b\u52a8\u63d0\u4ea4\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7show\u547d\u4ee4\u67e5\u770bautocommit\u5168\u5c40\u53d8\u91cf\uff0c\u53ef\u4ee5\u67e5\u770b\u4e8b\u52a1\u7684\u81ea\u52a8\u63d0\u4ea4\u662f\u5426\u88ab\u6253\u5f00\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\/bb184cada6af4c98af1f2e94375a42e1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/bb184cada6af4c98af1f2e94375a42e1.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> autocommit\u7684\u503c\u4e3aON\u8868\u793a\u81ea\u52a8\u63d0\u4ea4\u88ab\u6253\u5f00\uff0c\u503c\u4e3aOFF\u8868\u793a\u81ea\u52a8\u63d0\u4ea4\u88ab\u5173\u95ed\uff0c\u5373\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f\u4e3a\u624b\u52a8\u63d0\u4ea4\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8bbe\u7f6e\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7set\u547d\u4ee4\u8bbe\u7f6eautocommit\u5168\u5c40\u53d8\u91cf\u7684\u503c\uff0c\u53ef\u4ee5\u6253\u5f00\u6216\u5173\u95ed\u4e8b\u52a1\u7684\u81ea\u52a8\u63d0\u4ea4\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\/9aa5b00d3c8b480b8e3dbb4fec1d9a24.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/9aa5b00d3c8b480b8e3dbb4fec1d9a24.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> \u5c06autocommit\u7684\u503c\u8bbe\u7f6e\u4e3a1\u8868\u793a\u6253\u5f00\u81ea\u52a8\u63d0\u4ea4\uff0c\u8bbe\u7f6e\u4e3a0\u8868\u793a\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\uff0c\u76f8\u5f53\u4e8e\u5c06\u4e8b\u52a1\u63d0\u4ea4\u65b9\u5f0f\u8bbe\u7f6e\u4e3a\u624b\u52a8\u63d0\u4ea4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u52a1\u7684\u76f8\u5173\u6f14\u793a<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u51c6\u5907\u6d4b\u8bd5\u8868<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e3a\u4e86\u4fbf\u4e8e\u6f14\u793a\uff0c\u6211\u4eec\u5c06MySQL\u7684\u9694\u79bb\u7ea7\u522b\u8bbe\u7f6e\u6210\u8bfb\u672a\u63d0\u4ea4\uff0c\u4e5f\u5c31\u662f\u628a\u9694\u79bb\u7ea7\u522b\u8bbe\u7f6e\u7684\u6bd4\u8f83\u4f4e\uff0c\u65b9\u4fbf\u770b\u5230\u5b9e\u9a8c\u73b0\u8c61\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\/a367318e48ed4934a097a79772e145f5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a367318e48ed4934a097a79772e145f5.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>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8bbe\u7f6e\u5168\u5c40\u9694\u79bb\u7ea7\u522b\u540e\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\u4e0d\u4f1a\u6539\u53d8\uff0c\u53ea\u4f1a\u5f71\u54cd\u540e\u7eed\u4e0eMySQL\u65b0\u5efa\u7acb\u7684\u8fde\u63a5\uff0c\u56e0\u6b64\u9700\u8981\u91cd\u542f\u7ec8\u7aef\u624d\u80fd\u770b\u5230\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\u88ab\u6210\u529f\u8bbe\u7f6e\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\/3fa661957ba24e478c38f7f549f38320.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/3fa661957ba24e478c38f7f549f38320.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\u4e00\u4e2a\u94f6\u884c\u7528\u6237\u8868\uff0c\u8868\u4e2d\u5305\u542b\u7528\u6237\u7684id\u3001\u59d3\u540d\u548c\u8d26\u6237\u4f59\u989d\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\/2420769ba2c74a519d3e1ca239e48ff7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2420769ba2c74a519d3e1ca239e48ff7.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>\u6f14\u793a\u4e00\uff1a\u4e8b\u52a1\u7684\u5e38\u89c4\u64cd\u4f5c<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5de6\u7ec8\u7aef\u4f7f\u7528begin\u6216start transaction\u547d\u4ee4\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u53f3\u7ec8\u7aef\u67e5\u770b\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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\/efa2113af92a48a1884c79a022181414.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/efa2113af92a48a1884c79a022181414.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u6211\u4eec\u5c06\u9694\u79bb\u7ea7\u522b\u8bbe\u7f6e\u6210\u4e86\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4f7f\u7528commit\u63d0\u4ea4\u4e4b\u524d\uff0c\u5728\u53f3\u7ec8\u7aef\u4e2d\u5c31\u80fd\u67e5\u770b\u5230\u4e8b\u52a1\u5411\u8868\u4e2d\u63d2\u5165\u7684\u8bb0\u5f55\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\/a6a01222d436439fa51bdbfa6b142587.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a6a01222d436439fa51bdbfa6b142587.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4f7f\u7528savepoint\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u4fdd\u5b58\u70b9\uff0c\u7136\u540e\u7ee7\u7eed\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u8fd9\u65f6\u5728\u53f3\u7ec8\u7aef\u4e2d\u4e5f\u80fd\u770b\u5230\u65b0\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/bc86951d73cb49e8a34672539eb1604b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/bc86951d73cb49e8a34672539eb1604b.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4f7f\u7528rollback\u547d\u4ee4\u56de\u6eda\u5230\u4fdd\u5b58\u70b9\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u5728\u67e5\u770b\u8868\u4e2d\u6570\u636e\u65f6\u5c31\u770b\u4e0d\u5230\u521a\u624d\u63d2\u5165\u7684\u7b2c\u4e8c\u6761\u8bb0\u5f55\u4e86\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\/9eea2bdefe7c4b059af38256907dc53b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/9eea2bdefe7c4b059af38256907dc53b.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4f7f\u7528rollback\u547d\u4ee4\u56de\u6eda\u5230\u4e8b\u52a1\u6700\u5f00\u59cb\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u5728\u67e5\u770b\u8868\u4e2d\u6570\u636e\u65f6\u5c31\u770b\u4e0d\u5230\u4efb\u4f55\u8bb0\u5f55\u4e86\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\/a8869300708c4844b729087666b59406.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a8869300708c4844b729087666b59406.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\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528<code>begin<\/code>\u6216<code>start transaction<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528<code>savepoint \u4fdd\u5b58\u70b9<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u5728\u4e8b\u52a1\u4e2d\u521b\u5efa\u6307\u5b9a\u540d\u79f0\u7684\u4fdd\u5b58\u70b9\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528<code>rollback to \u4fdd\u5b58\u70b9<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u8ba9\u4e8b\u52a1\u56de\u6eda\u5230\u6307\u5b9a\u4fdd\u5b58\u70b9\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528<code>rollback<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u76f4\u63a5\u8ba9\u4e8b\u52a1\u56de\u6eda\u5230\u6700\u5f00\u59cb\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528<code>commit<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u63d0\u4ea4\u4e8b\u52a1\uff0c\u63d0\u4ea4\u4e8b\u52a1\u540e\u5c31\u4e0d\u80fd\u56de\u6eda\u4e86\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6f14\u793a\u4e8c\uff1a\u539f\u5b50\u6027<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u5de6\u7ec8\u7aef\u4e2d\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5728\u53f3\u7ec8\u7aef\u67e5\u770b\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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\/efa2113af92a48a1884c79a022181414-168618702532723.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/efa2113af92a48a1884c79a022181414-168618702532723.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u9694\u79bb\u7ea7\u522b\u662f\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u53f3\u7ec8\u7aef\u4e2d\u80fd\u591f\u67e5\u8be2\u5230\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/a6a01222d436439fa51bdbfa6b142587-168618704713926.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a6a01222d436439fa51bdbfa6b142587-168618704713926.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\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5728\u63d0\u4ea4\u4e4b\u524d\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\uff0c\u90a3\u4e48MySQL\u4f1a\u81ea\u52a8\u8ba9\u4e8b\u52a1\u56de\u6eda\u5230\u6700\u5f00\u59cb\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4e2d\u5c31\u770b\u4e0d\u5230\u4e4b\u524d\u63d2\u5165\u7684\u8bb0\u5f55\u4e86\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\/021aeb5da3474eaa99b58d130a6327be.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/021aeb5da3474eaa99b58d130a6327be.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>\u6f14\u793a\u4e09\uff1a\u6301\u4e45\u6027<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u5de6\u7ec8\u7aef\u4e2d\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5728\u53f3\u7ec8\u7aef\u67e5\u770b\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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\/efa2113af92a48a1884c79a022181414-168618753535131.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/efa2113af92a48a1884c79a022181414-168618753535131.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u9694\u79bb\u7ea7\u522b\u662f\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u53f3\u7ec8\u7aef\u4e2d\u80fd\u591f\u67e5\u8be2\u5230\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/a6a01222d436439fa51bdbfa6b142587-168618754841734.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a6a01222d436439fa51bdbfa6b142587-168618754841734.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5728\u63d0\u4ea4\u540e\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4e2d\u4ecd\u7136\u53ef\u4ee5\u770b\u5230\u4e4b\u524d\u63d2\u5165\u7684\u8bb0\u5f55\uff0c\u56e0\u4e3a\u4e8b\u52a1\u63d0\u4ea4\u540e\u6570\u636e\u5c31\u88ab\u6301\u4e45\u5316\u4e86\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\/e8472c7852844a2ba31de2ab4133e8df.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/e8472c7852844a2ba31de2ab4133e8df.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>\u6f14\u793a\u56db\uff1abegin\u4f1a\u81ea\u52a8\u66f4\u6539\u63d0\u4ea4\u65b9\u5f0f<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7show\u547d\u4ee4\u67e5\u770bautocommit\u7684\u503c\u4e3aON\uff0c\u8868\u793a\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f\u662f\u81ea\u52a8\u63d0\u4ea4\uff0c\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u6709\u4e00\u6761\u8bb0\u5f55\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\/81b9f2daafc9484db4aa0208351aa49e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/81b9f2daafc9484db4aa0208351aa49e.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\u5de6\u7ec8\u7aef\u4e2d\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\u5e76\u5411\u8868\u4e2d\u65b0\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u9694\u79bb\u7ea7\u522b\u662f\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u53f3\u7ec8\u7aef\u4e2d\u80fd\u591f\u67e5\u8be2\u5230\u65b0\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/77c41538515149b7b7a5b55271dd2d5d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/77c41538515149b7b7a5b55271dd2d5d.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\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5728\u63d0\u4ea4\u4e4b\u524d\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\uff0c\u90a3\u4e48MySQL\u4f9d\u65e7\u4f1a\u81ea\u52a8\u8ba9\u4e8b\u52a1\u56de\u6eda\u5230\u6700\u5f00\u59cb\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4e2d\u5c31\u770b\u4e0d\u5230\u4e4b\u524d\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u4e86\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\/6238e5296e1e4642b3e4829fee4ef228.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/6238e5296e1e4642b3e4829fee4ef228.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>\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f7f\u7528begin\u6216start transaction\u547d\u4ee4\u542f\u52a8\u7684\u4e8b\u52a1\uff0c\u90fd\u5fc5\u987b\u4f7f\u7528commit\u547d\u4ee4\u624b\u52a8\u63d0\u4ea4\uff0c\u6570\u636e\u624d\u4f1a\u88ab\u6301\u4e45\u5316\uff0c\u4e0e\u662f\u5426\u8bbe\u7f6eautocommit\u65e0\u5173\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6f14\u793a\u4e94\uff1a\u5355\u6761SQL\u4e0e\u4e8b\u52a1\u7684\u5173\u7cfb<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u9645\u5168\u5c40\u53d8\u91cfautocommit\u662f\u5426\u88ab\u8bbe\u7f6e\u5f71\u54cd\u7684\u662f\u5355\u6761SQL\u8bed\u53e5\uff0cInnoDB\u4e2d\u7684\u6bcf\u4e00\u6761SQL\u90fd\u4f1a\u9ed8\u8ba4\u88ab\u5c01\u88c5\u6210\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li>autocommit\u4e3aON\uff0c\u5219\u5355\u6761SQL\u8bed\u53e5\u6267\u884c\u540e\u4f1a\u81ea\u52a8\u88ab\u63d0\u4ea4\uff0c\u5982\u679c\u4e3aOFF\uff0c\u5219SQL\u8bed\u53e5\u6267\u884c\u540e\u9700\u8981\u4f7f\u7528commit\u8fdb\u884c\u624b\u52a8\u63d0\u4ea4\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u901a\u8fc7show\u547d\u4ee4\u67e5\u770bautocommit\u7684\u503c\u4e3aON\uff0c\u8868\u793a\u4e8b\u52a1\u7684\u63d0\u4ea4\u65b9\u5f0f\u662f\u81ea\u52a8\u63d0\u4ea4\uff0c\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u6709\u4e00\u6761\u8bb0\u5f55\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\/81b9f2daafc9484db4aa0208351aa49e-168618833390545.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/81b9f2daafc9484db4aa0208351aa49e-168618833390545.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\u5de6\u7ec8\u7aef\u4e2d\u76f4\u63a5\u5411\u8868\u4e2d\u65b0\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u9694\u79bb\u7ea7\u522b\u662f\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u53f3\u7ec8\u7aef\u4e2d\u80af\u5b9a\u80fd\u591f\u67e5\u8be2\u5230\u65b0\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/6f7b07c270364b20b6d48f1c851249a6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/6f7b07c270364b20b6d48f1c851249a6.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\u5c31\u7b97\u5de6\u7ec8\u7aef\u5728\u6267\u884c\u5355\u6761SQL\u540e\u4e0d\u4f7f\u7528commit\u8fdb\u884c\u63d0\u4ea4\uff0c\u800c\u76f4\u63a5\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4ecd\u7136\u53ef\u4ee5\u770b\u5230\u4e4b\u524d\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u4e86\uff0c\u56e0\u4e3a\u5355\u6761SQL\u5728\u6267\u884c\u540e\u88ab\u81ea\u52a8\u63d0\u4ea4\u6301\u4e45\u5316\u4e86\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\/d9382cd700b846289bd185d560dc0da3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/d9382cd700b846289bd185d560dc0da3.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>\u76f8\u53cd\uff0c\u5982\u679c\u5c06autocommit\u8bbe\u7f6e\u4e3aOFF\uff0c\u8868\u793a\u4e8b\u52a1\u6267\u884c\u540e\u9700\u8981\u624b\u52a8\u63d0\u4ea4\uff0c\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u6709\u4e24\u6761\u8bb0\u5f55\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\/97a13431ca43444196631fd7aae97e7d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/97a13431ca43444196631fd7aae97e7d.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\u5de6\u7ec8\u7aef\u4e2d\u76f4\u63a5\u5411\u8868\u4e2d\u65b0\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u7531\u4e8e\u9694\u79bb\u7ea7\u522b\u662f\u8bfb\u672a\u63d0\u4ea4\uff0c\u56e0\u6b64\u5728\u53f3\u7ec8\u7aef\u4e2d\u80af\u5b9a\u80fd\u591f\u67e5\u8be2\u5230\u65b0\u63d2\u5165\u7684\u8fd9\u6761\u8bb0\u5f55\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\/dc61345179fb4b52a230ac3f12d8624b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/dc61345179fb4b52a230ac3f12d8624b.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\u5982\u679c\u6b64\u65f6\u5de6\u7ec8\u7aef\u5728\u6267\u884c\u5355\u6761SQL\u540e\u4e0d\u4f7f\u7528commit\u8fdb\u884c\u63d0\u4ea4\uff0c\u800c\u76f4\u63a5\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\uff0c\u90a3\u4e48\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4e2d\u5c31\u770b\u4e0d\u5230\u4e4b\u524d\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u4e86\uff0c\u56e0\u4e3a\u8fd9\u65f6\u5355\u6761SQL\u6267\u884c\u540e\u9700\u8981\u4f7f\u7528commit\u624b\u52a8\u63d0\u4ea4\u540e\u624d\u4f1a\u6301\u4e45\u5316\uff0c\u5728commit\u4e4b\u524d\u4e0eMySQL\u65ad\u5f00\u8fde\u63a5\u5219\u4f1a\u81ea\u52a8\u8fdb\u884c\u56de\u6eda\u64cd\u4f5c\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\/a6e9cf0082b64e37802ef0b8efdf081b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a6e9cf0082b64e37802ef0b8efdf081b.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>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b9e\u9645\u6211\u4eec\u4e4b\u524d\u4e00\u76f4\u90fd\u5728\u4f7f\u7528\u5355SQL\u4e8b\u52a1\uff0c\u53ea\u4e0d\u8fc7autocommit\u9ed8\u8ba4\u662f\u6253\u5f00\u7684\uff0c\u56e0\u6b64\u5355SQL\u4e8b\u52a1\u6267\u884c\u540e\u81ea\u52a8\u5c31\u88ab\u63d0\u4ea4\u4e86\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL\u670d\u52a1\u53ef\u80fd\u4f1a\u540c\u65f6\u88ab\u591a\u4e2a\u5ba2\u6237\u7aef\u8fdb\u7a0b\uff08\u7ebf\u7a0b\uff09\u8bbf\u95ee\uff0c\u8bbf\u95ee\u7684\u65b9\u5f0f\u4ee5\u4e8b\u52a1\u7684\u65b9\u5f0f\u8fdb\u884c\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u4e8b\u52a1\u53ef\u80fd\u7531\u591a\u6761SQL\u8bed\u53e5\u6784\u6210\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u4efb\u4f55\u4e00\u4e2a\u4e8b\u52a1\uff0c\u90fd\u6709\u6267\u884c\u524d\u3001\u6267\u884c\u4e2d\u548c\u6267\u884c\u540e\u4e09\u4e2a\u9636\u6bb5\uff0c\u800c\u6240\u8c13\u7684\u539f\u5b50\u6027\u5c31\u662f\u8ba9\u7528\u6237\u5c42\u8981\u4e48\u770b\u5230\u6267\u884c\u524d\uff0c\u8981\u4e48\u770b\u5230\u6267\u884c\u540e\uff0c\u6267\u884c\u4e2d\u5982\u679c\u51fa\u73b0\u95ee\u9898\uff0c\u53ef\u4ee5\u968f\u65f6\u8fdb\u884c\u56de\u6eda\uff0c\u6240\u4ee5\u5355\u4e2a\u4e8b\u52a1\u5bf9\u7528\u6237\u8868\u73b0\u51fa\u6765\u7684\u7279\u6027\u5c31\u662f\u539f\u5b50\u6027\u3002<\/li>\n\n\n\n<li>\u4f46\u6bd5\u7adf\u6bcf\u4e2a\u4e8b\u52a1\u90fd\u6709\u4e00\u4e2a\u6267\u884c\u7684\u8fc7\u7a0b\uff0c\u5728\u591a\u4e2a\u4e8b\u52a1\u5404\u81ea\u6267\u884c\u81ea\u5df1\u7684\u591a\u6761SQL\u65f6\uff0c\u4ecd\u7136\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e92\u76f8\u5f71\u54cd\u7684\u60c5\u51b5\uff0c\u6bd4\u5982\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u5f20\u8868\uff0c\u751a\u81f3\u662f\u8868\u4e2d\u7684\u540c\u4e00\u6761\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u4e3a\u4e86\u4fdd\u8bc1\u4e8b\u52a1\u6267\u884c\u8fc7\u7a0b\u4e2d\u5c3d\u91cf\u4e0d\u53d7\u5e72\u6270\uff0c\u4e8e\u662f\u51fa\u73b0\u4e86\u9694\u79bb\u6027\u7684\u6982\u5ff5\uff0c\u800c\u6570\u636e\u5e93\u4e3a\u4e86\u5141\u8bb8\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d7\u5230\u4e0d\u540c\u7a0b\u5ea6\u7684\u5e72\u6270\uff0c\u4e8e\u662f\u51fa\u73b0\u4e86\u9694\u79bb\u7ea7\u522b\u7684\u6982\u5ff5\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6570\u636e\u5e93\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u6709\u4ee5\u4e0b\u56db\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8bfb\u672a\u63d0\u4ea4\uff08Read Uncommitted\uff09\uff1a<\/strong> \u5728\u8be5\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u6240\u6709\u7684\u4e8b\u52a1\u90fd\u53ef\u4ee5\u770b\u5230\u5176\u4ed6\u4e8b\u52a1\u6ca1\u6709\u63d0\u4ea4\u7684\u6267\u884c\u7ed3\u679c\uff0c\u5b9e\u9645\u751f\u4ea7\u4e2d\u4e0d\u53ef\u80fd\u4f7f\u7528\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u56e0\u4e3a\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u76f8\u5f53\u4e8e\u6ca1\u6709\u4efb\u4f55\u9694\u79bb\u6027\uff0c\u4f1a\u5b58\u5728\u5f88\u591a\u5e76\u53d1\u95ee\u9898\uff0c\u5982\u810f\u8bfb\u3001\u5e7b\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u7b49\u3002<\/li>\n\n\n\n<li><strong>\u8bfb\u63d0\u4ea4\uff08Read Committed\uff09\uff1a<\/strong> \u8be5\u9694\u79bb\u7ea7\u522b\u662f\u5927\u591a\u6570\u6570\u636e\u5e93\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\uff0c\u4f46\u5b83\u4e0d\u662fMySQL\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u6ee1\u8db3\u4e86\u9694\u79bb\u7684\u7b80\u5355\u5b9a\u4e49\uff1a\u4e00\u4e2a\u4e8b\u52a1\u53ea\u80fd\u770b\u5230\u5176\u4ed6\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\u6240\u505a\u7684\u6539\u53d8\uff0c\u4f46\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u5b58\u5728\u4e0d\u53ef\u91cd\u590d\u8bfb\u548c\u5e7b\u8bfb\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u53ef\u91cd\u590d\u8bfb\uff08Repeatable Read\uff09\uff1a<\/strong> \u8fd9\u662fMySQL\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u8be5\u9694\u79bb\u7ea7\u522b\u786e\u4fdd\u540c\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u591a\u6b21\u8bfb\u53d6\u64cd\u4f5c\u6570\u636e\u65f6\u4f1a\u770b\u5230\u540c\u6837\u7684\u6570\u636e\uff0c\u5373\u89e3\u51b3\u4e86\u4e0d\u53ef\u91cd\u590d\u8bfb\u7684\u95ee\u9898\uff0c\u4f46\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u4e0b\u4ecd\u7136\u5b58\u5728\u5e7b\u8bfb\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u4e32\u884c\u5316\uff08Serializable\uff09\uff1a<\/strong> \u8fd9\u662f\u4e8b\u52a1\u7684\u6700\u9ad8\u9694\u79bb\u7ea7\u522b\uff0c\u8be5\u9694\u79bb\u7ea7\u522b\u901a\u8fc7\u5f3a\u5236\u4e8b\u52a1\u6392\u5e8f\uff0c\u4f7f\u4e4b\u4e0d\u53ef\u80fd\u76f8\u4e92\u51b2\u7a81\uff0c\u4ece\u800c\u89e3\u51b3\u4e86\u5e7b\u8bfb\u95ee\u9898\u3002\u5b83\u5728\u6bcf\u4e2a\u8bfb\u7684\u6570\u636e\u884c\u4e0a\u9762\u52a0\u4e0a\u5171\u4eab\u9501\uff0c\u4f46\u662f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8d85\u65f6\u548c\u9501\u7ade\u4e89\u95ee\u9898\uff0c\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u592a\u6781\u7aef\uff0c\u5b9e\u9645\u751f\u6210\u4e2d\u57fa\u672c\u4e0d\u4f7f\u7528\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>\u867d\u7136\u6570\u636e\u5e93\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u6709\u4ee5\u4e0a\u56db\u79cd\uff0c\u4f46\u4e00\u4e2a\u7a33\u6001\u7684\u6570\u636e\u5e93\u53ea\u4f1a\u9009\u62e9\u8fd9\u5176\u4e2d\u7684\u4e00\u79cd\uff0c\u4f5c\u4e3a\u81ea\u5df1\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u3002\u4f46\u6570\u636e\u5e93\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\u6709\u65f6\u53ef\u80fd\u5e76\u4e0d\u6ee1\u8db3\u4e0a\u5c42\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u56e0\u6b64\u6570\u636e\u5e93\u63d0\u4f9b\u4e86\u8fd9\u56db\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u81ea\u884c\u8bbe\u7f6e\u3002<\/li>\n\n\n\n<li>\u9694\u79bb\u7ea7\u522b\u57fa\u672c\u4e0a\u90fd\u662f\u901a\u8fc7\u52a0\u9501\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\uff0c\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u5bf9\u9501\u7684\u4f7f\u7528\u662f\u4e0d\u540c\u7684\uff0c\u5e38\u89c1\u7684\u6709\u8868\u9501\u3001\u884c\u9501\u3001\u5199\u9501\u3001\u95f4\u9699\u9501\uff08GAP\uff09\u3001Next-Key\u9501\uff08GAP+\u884c\u9501\uff09\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u67e5\u770b\u4e0e\u8bbe\u7f6e\u9694\u79bb\u7ea7\u522b<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u67e5\u770b\u5168\u5c40\u9694\u79bb\u7ea7\u522b<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7<code>select @@global.tx_isolation<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u67e5\u770b\u5168\u5c40\u9694\u79bb\u7ea7\u522b\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\/f942e38649904bb7809a7beaaab1135f.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/f942e38649904bb7809a7beaaab1135f.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>\u67e5\u770b\u4f1a\u8bdd\u9694\u79bb\u7ea7\u522b<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7<code>select @@session.tx_isolation<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\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\/f0a44336883d43a7ad284a71e6886f85.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/f0a44336883d43a7ad284a71e6886f85.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\u901a\u8fc7<code>select @@tx_isolation<\/code>\u547d\u4ee4\uff0c\u4e5f\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\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\/c6b523c9fb2e44ccab11e8652005afdd.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c6b523c9fb2e44ccab11e8652005afdd.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>\u8bbe\u7f6e\u4f1a\u8bdd\u9694\u79bb\u7ea7\u522b<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7<code>set session transaction isolation level \u9694\u79bb\u7ea7\u522b<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\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\/391f401a7d874331b6a77007f8b0876e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/391f401a7d874331b6a77007f8b0876e.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> \u8bbe\u7f6e\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\u53ea\u4f1a\u5f71\u54cd\u5f53\u524d\u4f1a\u8bdd\uff0c\u65b0\u8d77\u7684\u4f1a\u8bdd\u4f9d\u65e7\u91c7\u7528\u5168\u5c40\u9694\u79bb\u7ea7\u522b\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8bbe\u7f6e\u5168\u5c40\u9694\u79bb\u7ea7\u522b<\/p>\n<\/blockquote>\n\n\n\n<p>\u901a\u8fc7<code>set global transaction isolation level \u9694\u79bb\u7ea7\u522b<\/code>\u547d\u4ee4\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5168\u5c40\u9694\u79bb\u7ea7\u522b\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\/893b926cf4cd4a068ea44efbd6fab20a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/893b926cf4cd4a068ea44efbd6fab20a.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> \u8bbe\u7f6e\u5168\u5c40\u9694\u79bb\u7ea7\u522b\u4f1a\u5f71\u54cd\u540e\u7eed\u7684\u65b0\u4f1a\u8bdd\uff0c\u4f46\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u5982\u679c\u8981\u8ba9\u5f53\u524d\u4f1a\u8bdd\u7684\u9694\u79bb\u7ea7\u522b\u4e5f\u6539\u53d8\uff0c\u5219\u9700\u8981\u91cd\u542f\u4f1a\u8bdd\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bfb\u672a\u63d0\u4ea4\uff08Read Uncommitted\uff09<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8bfb\u672a\u63d0\u4ea4\uff08Read Uncommitted\uff09<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5c06\u9694\u79bb\u7ea7\u522b\u90fd\u8bbe\u7f6e\u4e3a\u8bfb\u672a\u63d0\u4ea4\uff0c\u5e76\u67e5\u770b\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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:\/\/cdn.codergodv.xyz\/bad67c8c09d14320a653ce169f9d48e0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/bad67c8c09d14320a653ce169f9d48e0.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\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\u5728\u6ca1\u6709\u63d0\u4ea4\u4e4b\u524d\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5c31\u5df2\u7ecf\u80fd\u591f\u770b\u5230\u4e86\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\/21ef0a706b82492a88b4e51e69c71422.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/21ef0a706b82492a88b4e51e69c71422.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>\u8bfb\u672a\u63d0\u4ea4\u662f\u4e8b\u52a1\u7684\u6700\u4f4e\u9694\u79bb\u7ea7\u522b\uff0c\u51e0\u4e4e\u6ca1\u6709\u52a0\u9501\uff0c\u867d\u7136\u6548\u7387\u9ad8\uff0c\u4f46\u662f\u95ee\u9898\u6bd4\u8f83\u591a\uff0c\u6240\u4ee5\u4e25\u91cd\u4e0d\u5efa\u8bae\u4f7f\u7528\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u8bfb\u53d6\u5230\u53e6\u4e00\u4e2a\u6267\u884c\u4e2d\u7684\u4e8b\u52a1\u6240\u505a\u7684\u4fee\u6539\uff0c\u4f46\u662f\u8be5\u4e8b\u52a1\u8fd8\u6ca1\u6709\u8fdb\u884c\u63d0\u4ea4\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u505a\u810f\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bfb\u63d0\u4ea4\uff08Read Committed\uff09<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8bfb\u63d0\u4ea4\uff08Read Committed)<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5c06\u9694\u79bb\u7ea7\u522b\u90fd\u8bbe\u7f6e\u4e3a\u8bfb\u63d0\u4ea4\uff0c\u5e76\u67e5\u770b\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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:\/\/cdn.codergodv.xyz\/4082b10d2fe64c318fffb75b739ab4e2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/4082b10d2fe64c318fffb75b739ab4e2.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\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\u5728\u6ca1\u6709\u63d0\u4ea4\u4e4b\u524d\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u65e0\u6cd5\u770b\u5230\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\/39cf131f8d1944539c57fc2217d7bedf.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/39cf131f8d1944539c57fc2217d7bedf.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>\u53ea\u6709\u5f53\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u624d\u80fd\u770b\u5230\u4fee\u6539\u540e\u7684\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:\/\/cdn.codergodv.xyz\/a1808657684c4749b9d3260ecfa9f7d1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a1808657684c4749b9d3260ecfa9f7d1.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\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e24\u4e2a\u76f8\u540c\u7684select\u67e5\u8be2\u5f97\u5230\u4e86\u4e0d\u540c\u7684\u6570\u636e\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u505a\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u53ef\u91cd\u590d\u8bfb\uff08Repeatable Read\uff09<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53ef\u91cd\u590d\u8bfb\uff08Repeatable Read\uff09<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5c06\u9694\u79bb\u7ea7\u522b\u90fd\u8bbe\u7f6e\u4e3a\u53ef\u91cd\u590d\u8bfb\uff0c\u5e76\u67e5\u770b\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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:\/\/cdn.codergodv.xyz\/99f46830b4204890a0b8d37c5e5427df.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/99f46830b4204890a0b8d37c5e5427df.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\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\u5728\u6ca1\u6709\u63d0\u4ea4\u4e4b\u524d\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u65e0\u6cd5\u770b\u5230\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\/ed884273dcf64eabb7741d2d0d97d928.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/ed884273dcf64eabb7741d2d0d97d928.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>\u5e76\u4e14\u5f53\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4ecd\u7136\u770b\u4e0d\u5230\u4fee\u6539\u540e\u7684\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:\/\/cdn.codergodv.xyz\/6a2a695bfe6549b1bf3a2664082c90c5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/6a2a695bfe6549b1bf3a2664082c90c5.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>\u53ea\u6709\u5f53\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u63d0\u4ea4\u540e\u518d\u67e5\u770b\u8868\u4e2d\u7684\u6570\u636e\uff0c\u8fd9\u65f6\u624d\u80fd\u770b\u5230\u4fee\u6539\u540e\u7684\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:\/\/cdn.codergodv.xyz\/3853c92e081f471e858dbf882b304b6c.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/3853c92e081f471e858dbf882b304b6c.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\u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u76f8\u540c\u7684select\u67e5\u8be2\u5f97\u5230\u7684\u662f\u76f8\u540c\u7684\u6570\u636e\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n\n\n\n<li>\u4e00\u822c\u7684\u6570\u636e\u5e93\u5728\u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\uff0cupdate\u6570\u636e\u662f\u6ee1\u8db3\u53ef\u91cd\u590d\u8bfb\u7684\uff0c\u4f46insert\u6570\u636e\u4f1a\u5b58\u5728\u5e7b\u8bfb\u95ee\u9898\uff0c\u56e0\u4e3a\u9694\u79bb\u6027\u662f\u901a\u8fc7\u5bf9\u6570\u636e\u52a0\u9501\u5b8c\u6210\u7684\uff0c\u800c\u65b0\u63d2\u5165\u7684\u6570\u636e\u539f\u672c\u662f\u4e0d\u5b58\u5728\u7684\uff0c\u56e0\u6b64\u4e00\u822c\u7684\u52a0\u9501\u65e0\u6cd5\u5c4f\u853d\u8fd9\u7c7b\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u76f8\u540c\u7684select\u67e5\u8be2\u5f97\u5230\u4e86\u65b0\u7684\u6570\u636e\uff0c\u5982\u540c\u51fa\u73b0\u4e86\u5e7b\u89c9\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u505a\u5e7b\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n<p>MySQL\u89e3\u51b3\u4e86\u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\u7684\u5e7b\u8bfb\u95ee\u9898\uff0c\u6bd4\u5982\u91cd\u65b0\u5728\u8fd9\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5411\u8868\u4e2d\u63d2\u5165\u6570\u636e\u7684\u5728\u6ca1\u6709\u63d0\u4ea4\u4e4b\u524d\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u65e0\u6cd5\u770b\u5230\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\/2bb755563894455a98ba8bb5012b0e77.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2bb755563894455a98ba8bb5012b0e77.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>\u5e76\u4e14\u5f53\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4ecd\u7136\u770b\u4e0d\u5230\u65b0\u63d2\u5165\u7684\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:\/\/cdn.codergodv.xyz\/87b754e1bf68433ca5c00ef73f288da0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/87b754e1bf68433ca5c00ef73f288da0.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>\u53ea\u6709\u5f53\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u63d0\u4ea4\u540e\u518d\u67e5\u770b\u8868\u4e2d\u7684\u6570\u636e\uff0c\u8fd9\u65f6\u624d\u80fd\u770b\u5230\u65b0\u63d2\u5165\u7684\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:\/\/cdn.codergodv.xyz\/c37385ee02464924a8ae6c21c35df804.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c37385ee02464924a8ae6c21c35df804.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>MySQL\u662f\u901a\u8fc7Next-Key\u9501\uff08GAP+\u884c\u9501\uff09\u6765\u89e3\u51b3\u5e7b\u8bfb\u95ee\u9898\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e32\u884c\u5316\uff08Serializable\uff09<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e32\u884c\u5316\uff08Serializable\uff09<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5c06\u9694\u79bb\u7ea7\u522b\u90fd\u8bbe\u7f6e\u4e3a\u4e32\u884c\u5316\uff0c\u5e76\u67e5\u770b\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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:\/\/cdn.codergodv.xyz\/dd9bee24c7054e49921cfa2080bfdff5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/dd9bee24c7054e49921cfa2080bfdff5.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\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5982\u679c\u8fd9\u4e24\u4e2a\u4e8b\u52a1\u90fd\u5bf9\u8868\u8fdb\u884c\u7684\u662f\u8bfb\u64cd\u4f5c\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\uff0c\u4e0d\u4f1a\u88ab\u963b\u585e\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\/f1624417845044c4b82126fa1aa712a5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/f1624417845044c4b82126fa1aa712a5.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\u5982\u679c\u8fd9\u4e24\u4e2a\u4e8b\u52a1\u4e2d\u6709\u4e00\u4e2a\u4e8b\u52a1\u8981\u5bf9\u8868\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4e8b\u52a1\u5c31\u4f1a\u7acb\u5373\u88ab\u963b\u585e\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\/d7c4c711289e4291a77097cce619a6a4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/d7c4c711289e4291a77097cce619a6a4.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>\u76f4\u5230\u8bbf\u95ee\u8fd9\u5f20\u8868\u7684\u5176\u4ed6\u4e8b\u52a1\u90fd\u63d0\u4ea4\u540e\uff0c\u8fd9\u4e2a\u88ab\u963b\u585e\u7684\u4e8b\u52a1\u624d\u4f1a\u88ab\u5524\u9192\uff0c\u7136\u540e\u624d\u80fd\u5bf9\u8868\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\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\/c354ca9d9dad4752ac195218aecbe02e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/c354ca9d9dad4752ac195218aecbe02e.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>\u4e32\u884c\u5316\u662f\u4e8b\u52a1\u7684\u6700\u9ad8\u9694\u79bb\u7ea7\u522b\uff0c\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\u52a0\u7684\u662f\u5171\u4eab\u9501\uff0c\u56e0\u6b64\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\u8bfb\u64cd\u4f5c\uff0c\u4f46\u4e00\u65e6\u9700\u8981\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u5c31\u4f1a\u8fdb\u884c\u4e32\u884c\u5316\uff0c\u6548\u7387\u5f88\u4f4e\uff0c\u51e0\u4e4e\u4e0d\u4f1a\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u9694\u79bb\u7ea7\u522b\u603b\u7ed3<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9694\u79bb\u7ea7\u522b\u603b\u7ed3<\/p>\n<\/blockquote>\n\n\n\n<p>\u5bf9MySQL\u4e2d\u7684\u9694\u79bb\u7ea7\u522b\u603b\u7ed3\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\/image-20230608132600503.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/image-20230608132600503.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20230608132600503\"\/><\/div><\/figure>\n\n\n\n<p>\u221a\uff1a\u4f1a\u53d1\u751f\u8be5\u95ee\u9898<br>X\uff1a\u4e0d\u4f1a\u53d1\u751f\u8be5\u95ee\u9898<\/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>\u9694\u79bb\u7ea7\u522b\u8d8a\u4e25\u683c\uff0c\u5b89\u5168\u6027\u8d8a\u9ad8\uff0c\u4f46\u6570\u636e\u5e93\u7684\u5e76\u53d1\u6027\u80fd\u4e5f\u5c31\u8d8a\u4f4e\uff0c\u5728\u9009\u62e9\u9694\u79bb\u7ea7\u522b\u65f6\u5f80\u5f80\u9700\u8981\u5728\u4e24\u8005\u4e4b\u95f4\u627e\u4e00\u4e2a\u5e73\u8861\u70b9\u3002<\/li>\n\n\n\n<li>\u8868\u4e2d\u53ea\u5199\u51fa\u4e86\u5404\u79cd\u9694\u79bb\u7ea7\u522b\u4e0b\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\u662f\u5426\u9700\u8981\u52a0\u9501\uff0c\u56e0\u4e3a\u65e0\u8bba\u54ea\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u53ea\u8981\u9700\u8981\u8fdb\u884c\u5199\u64cd\u4f5c\u5c31\u4e00\u5b9a\u9700\u8981\u52a0\u9501\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5173\u4e8e\u4e00\u81f4\u6027<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5173\u4e8e\u4e00\u81f4\u6027<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e8b\u52a1\u6267\u884c\u7684\u7ed3\u679c\uff0c\u5fc5\u987b\u4f7f\u6570\u636e\u5e93\u4ece\u4e00\u4e2a\u4e00\u81f4\u6027\u72b6\u6001\uff0c\u53d8\u5230\u53e6\u4e00\u4e2a\u4e00\u81f4\u6027\u72b6\u6001\uff0c\u5f53\u6570\u636e\u5e93\u53ea\u5305\u542b\u4e8b\u52a1\u6210\u529f\u63d0\u4ea4\u7684\u7ed3\u679c\u65f6\uff0c\u6570\u636e\u5e93\u5c31\u5904\u4e8e\u4e00\u81f4\u6027\u72b6\u6001\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u5982\u679c\u53d1\u751f\u9519\u8bef\uff0c\u5219\u9700\u8981\u81ea\u52a8\u56de\u6eda\u5230\u4e8b\u52a1\u6700\u5f00\u59cb\u7684\u72b6\u6001\uff0c\u5c31\u50cf\u8fd9\u4e2a\u4e8b\u52a1\u4ece\u6765\u6ca1\u6709\u6267\u884c\u8fc7\u4e00\u6837\uff0c\u5373\u4e00\u81f4\u6027\u9700\u8981\u539f\u5b50\u6027\u6765\u4fdd\u8bc1\u3002<\/li>\n\n\n\n<li>\u4e8b\u52a1\u5904\u7406\u7ed3\u675f\u540e\uff0c\u5bf9\u6570\u636e\u7684\u4fee\u6539\u5fc5\u987b\u662f\u6c38\u4e45\u7684\uff0c\u5373\u4fbf\u7cfb\u7edf\u6545\u969c\u4e5f\u4e0d\u80fd\u4e22\u5931\uff0c\u5373\u4e00\u81f4\u6027\u9700\u8981\u6301\u4e45\u6027\u6765\u4fdd\u8bc1\u3002<\/li>\n\n\n\n<li>\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4efd\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u4fdd\u8bc1\u8fd9\u591a\u4e2a\u4e8b\u52a1\u5728\u5e76\u53d1\u6267\u884c\u65f6\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u7531\u4e8e\u4ea4\u53c9\u6267\u884c\u800c\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\uff0c\u5373\u4e00\u81f4\u6027\u9700\u8981\u9694\u79bb\u6027\u6765\u4fdd\u8bc1\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u4e00\u81f4\u6027\u4e0e\u7528\u6237\u7684\u4e1a\u52a1\u903b\u8f91\u5f3a\u76f8\u5173\uff0c\u5982\u679c\u7528\u6237\u672c\u8eab\u7684\u4e1a\u52a1\u903b\u8f91\u6709\u95ee\u9898\uff0c\u6700\u7ec8\u4e5f\u4f1a\u8ba9\u6570\u636e\u5e93\u5904\u4e8e\u4e00\u79cd\u4e0d\u4e00\u81f4\u7684\u72b6\u6001\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e00\u81f4\u6027\u5b9e\u9645\u662f\u6570\u636e\u5e93\u6700\u7ec8\u8981\u8fbe\u5230\u7684\u6548\u679c\uff0c\u4e00\u81f4\u6027\u4e0d\u4ec5\u9700\u8981\u539f\u5b50\u6027\u3001\u6301\u4e45\u6027\u548c\u9694\u79bb\u6027\u6765\u4fdd\u8bc1\uff0c\u8fd8\u9700\u8981\u4e0a\u5c42\u7528\u6237\u7f16\u5199\u51fa\u6b63\u786e\u7684\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6570\u636e\u5e93\u7684\u5e76\u53d1\u573a\u666f<\/p>\n<\/blockquote>\n\n\n\n<p>\u6570\u636e\u5e93\u5e76\u53d1\u7684\u573a\u666f\u65e0\u975e\u5982\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bfb-\u8bfb\u5e76\u53d1\uff1a\u4e0d\u5b58\u5728\u4efb\u4f55\u95ee\u9898\uff0c\u4e5f\u4e0d\u9700\u8981\u5e76\u53d1\u63a7\u5236\u3002<\/li>\n\n\n\n<li>\u8bfb-\u5199\u5e76\u53d1\uff1a\u6709\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u53ef\u80fd\u4f1a\u5b58\u5728\u4e8b\u52a1\u9694\u79bb\u6027\u95ee\u9898\uff0c\u53ef\u80fd\u9047\u5230\u810f\u8bfb\u3001\u5e7b\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n\n\n\n<li>\u5199-\u5199\u5e76\u53d1\uff1a\u6709\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u53ef\u80fd\u4f1a\u5b58\u5728\u4e24\u7c7b\u66f4\u65b0\u4e22\u5931\u95ee\u9898\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>\u5199-\u5199\u5e76\u53d1\u573a\u666f\u4e0b\u7684\u7b2c\u4e00\u7c7b\u66f4\u65b0\u4e22\u5931\u53c8\u53eb\u505a\u56de\u6eda\u4e22\u5931\uff0c\u5373\u4e00\u4e2a\u4e8b\u52a1\u7684\u56de\u6eda\u628a\u53e6\u4e00\u4e2a\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\u66f4\u65b0\u7684\u6570\u636e\u8986\u76d6\u4e86\uff0c\u7b2c\u4e8c\u7c7b\u66f4\u65b0\u4e22\u5931\u53c8\u53eb\u505a\u8986\u76d6\u4e22\u5931\uff0c\u5373\u4e00\u4e2a\u4e8b\u52a1\u7684\u63d0\u4ea4\u628a\u53e6\u4e00\u4e2a\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\u66f4\u65b0\u7684\u6570\u636e\u8986\u76d6\u4e86\u3002<\/li>\n\n\n\n<li>\u8bfb-\u8bfb\u5e76\u53d1\u4e0d\u9700\u8981\u8fdb\u884c\u5e76\u53d1\u63a7\u5236\uff0c\u5199-\u5199\u5e76\u53d1\u5b9e\u9645\u4e5f\u5c31\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u9501\uff0c\u8fd9\u91cc\u6700\u503c\u5f97\u8ba8\u8bba\u7684\u662f\u8bfb-\u5199\u5e76\u53d1\uff0c\u8bfb-\u5199\u5e76\u53d1\u662f\u6570\u636e\u5e93\u5f53\u4e2d\u6700\u9ad8\u9891\u7684\u573a\u666f\uff0c\u5728\u89e3\u51b3\u8bfb-\u5199\u5e76\u53d1\u65f6\u4e0d\u4ec5\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u8fd8\u9700\u8981\u8003\u8651\u5e76\u53d1\u7684\u6027\u80fd\u95ee\u9898\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\u7248\u672c\u5e76\u53d1\u63a7\u5236<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08Multi-Version Concurrency Control\uff0cMVCC\uff09\u662f\u4e00\u79cd\u7528\u6765\u89e3\u51b3\u8bfb\u5199\u51b2\u7a81\u7684\u65e0\u9501\u5e76\u53d1\u63a7\u5236\uff0c\u4e3b\u8981\u4f9d\u8d56\u8bb0\u5f55\u4e2d\u76843\u4e2a\u9690\u85cf\u5b57\u6bb5\u3001undo\u65e5\u5fd7\u548cRead View\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li>\u4e3a\u4e8b\u52a1\u5206\u914d\u5355\u5411\u589e\u957f\u7684\u4e8b\u52a1ID\uff0c\u4e3a\u6bcf\u4e2a\u4fee\u6539\u4fdd\u5b58\u4e00\u4e2a\u7248\u672c\uff0c\u5c06\u7248\u672c\u4e0e\u4e8b\u52a1ID\u76f8\u5173\u8054\uff0c\u8bfb\u64cd\u4f5c\u53ea\u8bfb\u8be5\u4e8b\u52a1\u5f00\u59cb\u524d\u7684\u6570\u636e\u5e93\u5feb\u7167\u3002<\/li>\n\n\n\n<li>MVCC\u4fdd\u8bc1\u8bfb\u5199\u5e76\u53d1\u65f6\uff0c\u8bfb\u64cd\u4f5c\u4e0d\u4f1a\u963b\u585e\u5199\u64cd\u4f5c\uff0c\u5199\u64cd\u4f5c\u4e5f\u4e0d\u4f1a\u963b\u585e\u8bfb\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u5e93\u5e76\u53d1\u8bfb\u5199\u7684\u6027\u80fd\uff0c\u540c\u65f6\u8fd8\u53ef\u4ee5\u89e3\u51b3\u810f\u8bfb\u3001\u5e7b\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u7b49\u4e8b\u52a1\u9694\u79bb\u6027\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bb0\u5f55\u4e2d\u7684\u4e09\u4e2a\u9690\u85cf\u5b57\u6bb5<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8bb0\u5f55\u4e2d\u7684\u4e09\u4e2a\u9690\u85cf\u5b57\u6bb5<\/p>\n<\/blockquote>\n\n\n\n<p>\u6570\u636e\u5e93\u8868\u4e2d\u7684\u6bcf\u6761\u8bb0\u5f55\u90fd\u4f1a\u6709\u5982\u4e0b3\u4e2a\u9690\u85cf\u5b57\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>DB_TRX_ID<\/code>\uff1a6\u5b57\u8282\uff0c\u521b\u5efa\u6216\u6700\u8fd1\u4e00\u6b21\u4fee\u6539\u8be5\u8bb0\u5f55\u7684\u4e8b\u52a1ID\u3002<\/li>\n\n\n\n<li><code>DB_ROW_ID<\/code>\uff1a6\u5b57\u8282\uff0c\u9690\u542b\u7684\u81ea\u589eID\uff08\u9690\u85cf\u4e3b\u952e\uff09\u3002<\/li>\n\n\n\n<li><code>DB_ROLL_PTR<\/code>\uff1a7\u5b57\u8282\uff0c\u56de\u6eda\u6307\u9488\uff0c\u6307\u5411\u8fd9\u6761\u8bb0\u5f55\u7684\u4e0a\u4e00\u4e2a\u7248\u672c\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>\u91c7\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\u5efa\u7acb\u7684\u6bcf\u5f20\u8868\u90fd\u4f1a\u6709\u4e00\u4e2a\u4e3b\u952e\uff0c\u5982\u679c\u7528\u6237\u6ca1\u6709\u8bbe\u7f6e\uff0cInnoDB\u5c31\u4f1a\u81ea\u52a8\u4ee5<code>DB_ROW_ID<\/code>\u4ea7\u751f\u4e00\u4e2a\u805a\u7c07\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>\u6b64\u5916\uff0c\u6570\u636e\u5e93\u8868\u4e2d\u7684\u6bcf\u6761\u8bb0\u5f55\u8fd8\u6709\u4e00\u4e2a\u5220\u9664flag\u9690\u85cf\u5b57\u6bb5\uff0c\u7528\u4e8e\u8868\u793a\u8be5\u6761\u8bb0\u5f55\u662f\u5426\u88ab\u5220\u9664\uff0c\u4fbf\u4e8e\u8fdb\u884c\u6570\u636e\u56de\u6eda\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u793a\u4f8b<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u5b66\u751f\u8868\uff0c\u8868\u4e2d\u5305\u542b\u5b66\u751f\u7684\u59d3\u540d\u548c\u5e74\u9f84\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\/743cf1e1bb8a4e6cbb48a7b36f772185.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/743cf1e1bb8a4e6cbb48a7b36f772185.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\u5411\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u540e\uff0c\u8be5\u8bb0\u5f55\u4e0d\u4ec5\u5305\u542bname\u548cage\u5b57\u6bb5\uff0c\u8fd8\u5305\u542b\u4e09\u4e2a\u9690\u85cf\u5b57\u6bb5\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\/916b50e1c04c4f8d935ecabfd9383e56.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/916b50e1c04c4f8d935ecabfd9383e56.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>\u5047\u8bbe\u63d2\u5165\u8be5\u8bb0\u5f55\u7684\u4e8b\u52a1\u7684\u4e8b\u52a1ID\u4e3a9\uff0c\u90a3\u4e48\u8be5\u8bb0\u5f55\u7684<code>DB_TRX_ID<\/code>\u5b57\u6bb5\u586b\u7684\u5c31\u662f9\u3002<\/li>\n\n\n\n<li>\u56e0\u4e3a\u8fd9\u662f\u63d2\u5165\u7684\u7b2c\u4e00\u6761\u8bb0\u5f55\uff0c\u6240\u4ee5\u9690\u5f0f\u4e3b\u952e<code>DB_ROW_ID<\/code>\u5b57\u6bb5\u586b\u7684\u5c31\u662f1<\/li>\n\n\n\n<li>\u7531\u4e8e\u8fd9\u6761\u8bb0\u5f55\u662f\u65b0\u63d2\u5165\u7684\uff0c\u6ca1\u6709\u5386\u53f2\u7248\u672c\uff0c\u6240\u4ee5\u56de\u6eda\u6307\u9488<code>DB_ROLL_PTR<\/code>\u7684\u503c\u8bbe\u7f6e\u4e3anull\u3002<\/li>\n\n\n\n<li>MVCC\u91cd\u70b9\u9700\u8981\u7684\u5c31\u662f\u8fd9\u4e09\u4e2a\u9690\u85cf\u5b57\u6bb5\uff0c\u5b9e\u9645\u8fd8\u6709\u5176\u4ed6\u9690\u85cf\u5b57\u6bb5\uff0c\u53ea\u4e0d\u8fc7\u6ca1\u6709\u753b\u51fa\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">undo\u65e5\u5fd7<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>undo\u65e5\u5fd7<\/p>\n<\/blockquote>\n\n\n\n<p>MySQL\u7684\u4e09\u5927\u65e5\u5fd7\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>redo log\uff1a\u91cd\u505a\u65e5\u5fd7\uff0c\u7528\u4e8eMySQL\u5d29\u6e83\u540e\u8fdb\u884c\u6570\u636e\u6062\u590d\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u6301\u4e45\u6027\u3002<\/li>\n\n\n\n<li>bin log\uff1a\u903b\u8f91\u65e5\u5fd7\uff0c\u7528\u4e8e\u4e3b\u4ece\u6570\u636e\u5907\u4efd\u65f6\u8fdb\u884c\u6570\u636e\u540c\u6b65\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/li>\n\n\n\n<li>undo log\uff1a\u56de\u6eda\u65e5\u5fd7\uff0c\u7528\u4e8e\u5bf9\u5df2\u7ecf\u6267\u884c\u7684\u64cd\u4f5c\u8fdb\u884c\u56de\u6eda\uff0c\u4fdd\u8bc1\u4e8b\u52a1\u7684\u539f\u5b50\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p>MySQL\u4f1a\u4e3a\u4e0a\u8ff0\u4e09\u5927\u65e5\u5fd7\u5f00\u8f9f\u5bf9\u5e94\u7684\u7f13\u51b2\u533a\uff0c\u7528\u4e8e\u5b58\u50a8\u65e5\u5fd7\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5fc5\u8981\u65f6\u4f1a\u5c06\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\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>MVCC\u7684\u5b9e\u73b0\u4e3b\u8981\u4f9d\u8d56\u4e09\u5927\u65e5\u5fd7\u4e2d\u7684undo log\uff0c\u8bb0\u5f55\u7684\u5386\u53f2\u7248\u672c\u5c31\u662f\u5b58\u50a8\u5728undo log\u5bf9\u5e94\u7684\u7f13\u51b2\u533a\u4e2d\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5feb\u7167\u7684\u6982\u5ff5<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5feb\u7167\u7684\u6982\u5ff5<\/p>\n<\/blockquote>\n\n\n\n<p>\u73b0\u5728\u6709\u4e00\u4e2a\u4e8b\u52a1ID\u4e3a10\u7684\u4e8b\u52a1\uff0c\u8981\u5c06\u521a\u624d\u63d2\u5165\u5b66\u751f\u8868\u4e2d\u7684\u8bb0\u5f55\u7684\u5b66\u751f\u59d3\u540d\u6539\u4e3a\u201c\u674e\u56db\u201d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u56e0\u4e3a\u662f\u8981\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u6240\u4ee5\u9700\u8981\u5148\u7ed9\u8be5\u8bb0\u5f55\u52a0\u884c\u9501\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u524d\uff0c\u5148\u5c06\u8be5\u884c\u8bb0\u5f55\u62f7\u8d1d\u5230undo log\u4e2d\uff0c\u6b64\u65f6undo log\u4e2d\u5c31\u6709\u4e86\u4e00\u884c\u526f\u672c\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u7136\u540e\u518d\u5c06\u539f\u59cb\u8bb0\u5f55\u4e2d\u7684\u5b66\u751f\u59d3\u540d\u6539\u4e3a\u201c\u674e\u56db\u201d\uff0c\u5e76\u5c06\u8be5\u8bb0\u5f55\u7684<code>DB_TRX_ID<\/code>\u6539\u4e3a10\uff0c\u56de\u6eda\u6307\u9488<code>DB_ROLL_PTR<\/code>\u8bbe\u7f6e\u6210undo log\u4e2d\u526f\u672c\u6570\u636e\u7684\u5730\u5740\uff0c\u4ece\u800c\u6307\u5411\u8be5\u8bb0\u5f55\u7684\u4e0a\u4e00\u4e2a\u7248\u672c\u3002<\/li>\n\n\n\n<li>\u6700\u540e\u5f53\u4e8b\u52a110\u63d0\u4ea4\u540e\u91ca\u653e\u9501\uff0c\u8fd9\u65f6\u6700\u65b0\u7684\u8bb0\u5f55\u5c31\u662f\u5b66\u751f\u59d3\u540d\u4e3a\u201c\u674e\u56db\u201d\u7684\u90a3\u6761\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4fee\u6539\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\/050066b571fe4652ad60a85ef2dab524.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/050066b571fe4652ad60a85ef2dab524.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>\u73b0\u5728\u53c8\u6709\u4e00\u4e2a\u4e8b\u52a1ID\u4e3a11\u7684\u4e8b\u52a1\uff0c\u8981\u5c06\u521a\u624d\u5b66\u751f\u8868\u4e2d\u7684\u90a3\u6761\u8bb0\u5f55\u7684\u5b66\u751f\u5e74\u9f84\u6539\u4e3a38\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u56e0\u4e3a\u662f\u8981\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u6240\u4ee5\u9700\u8981\u5148\u7ed9\u8be5\u8bb0\u5f55\uff08\u6700\u65b0\u7684\u8bb0\u5f55\uff09\u52a0\u884c\u9501\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u524d\uff0c\u5148\u5c06\u8be5\u884c\u8bb0\u5f55\u62f7\u8d1d\u5230undo log\u4e2d\uff0c\u6b64\u65f6undo log\u4e2d\u5c31\u53c8\u6709\u4e86\u4e00\u884c\u526f\u672c\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u7136\u540e\u518d\u5c06\u539f\u59cb\u8bb0\u5f55\u4e2d\u7684\u5b66\u751f\u5e74\u9f84\u6539\u4e3a38\uff0c\u5e76\u5c06\u8be5\u8bb0\u5f55\u7684<code>DB_TRX_ID<\/code>\u6539\u4e3a11\uff0c\u56de\u6eda\u6307\u9488<code>DB_ROLL_PTR<\/code>\u8bbe\u7f6e\u6210\u521a\u624d\u62f7\u8d1d\u5230undo log\u4e2d\u7684\u526f\u672c\u6570\u636e\u7684\u5730\u5740\uff0c\u4ece\u800c\u6307\u5411\u8be5\u8bb0\u5f55\u7684\u4e0a\u4e00\u4e2a\u7248\u672c\u3002<\/li>\n\n\n\n<li>\u6700\u540e\u5f53\u4e8b\u52a111\u63d0\u4ea4\u540e\u91ca\u653e\u9501\uff0c\u8fd9\u65f6\u6700\u65b0\u7684\u8bb0\u5f55\u5c31\u662f\u5b66\u751f\u5e74\u9f84\u4e3a38\u7684\u90a3\u6761\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4fee\u6539\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\/275efc6dc02d46d8b1f3c49da5d5fb53.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/275efc6dc02d46d8b1f3c49da5d5fb53.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\u65f6\u6211\u4eec\u5c31\u6709\u4e86\u4e00\u4e2a\u57fa\u4e8e\u94fe\u8868\u8bb0\u5f55\u7684\u5386\u53f2\u7248\u672c\u94fe\uff0c\u800cundo log\u4e2d\u7684\u4e00\u4e2a\u4e2a\u7684\u5386\u53f2\u7248\u672c\u5c31\u79f0\u4e3a\u4e00\u4e2a\u4e2a\u7684\u5feb\u7167\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>\u6240\u8c13\u7684\u56de\u6eda\u5b9e\u9645\u5c31\u662f\u7528undo log\u4e2d\u7684\u5386\u53f2\u6570\u636e\u8986\u76d6\u5f53\u524d\u6570\u636e\uff0c\u800c\u6240\u8c13\u7684\u521b\u5efa\u4fdd\u5b58\u70b9\u5c31\u53ef\u4ee5\u7406\u89e3\u6210\u662f\u7ed9\u67d0\u4e9b\u7248\u672c\u505a\u4e86\u6807\u8bb0\uff0c\u8ba9\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u7528\u8fd9\u4e9b\u7248\u672c\u6570\u636e\u6765\u8986\u76d6\u5f53\u524d\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u8fd9\u79cd\u6280\u672f\u5b9e\u9645\u5c31\u662f\u57fa\u4e8e\u7248\u672c\u7684\u5199\u65f6\u62f7\u8d1d\uff0c\u5f53\u9700\u8981\u8fdb\u884c\u5199\u64cd\u4f5c\u65f6\u5148\u5c06\u6700\u65b0\u7248\u672c\u62f7\u8d1d\u4e00\u4efd\u5230undo log\u4e2d\uff0c\u7136\u540e\u518d\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u548c\u7236\u5b50\u8fdb\u7a0b\u4e3a\u4e86\u4fdd\u8bc1\u72ec\u7acb\u6027\u800c\u8fdb\u884c\u7684\u5199\u65f6\u62f7\u8d1d\u662f\u7c7b\u4f3c\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>insert\u548cdelete\u7684\u8bb0\u5f55\u5982\u4f55\u7ef4\u62a4\u7248\u672c\u94fe\uff1f<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5220\u9664\u8bb0\u5f55\u5e76\u4e0d\u662f\u771f\u7684\u628a\u6570\u636e\u5220\u9664\u4e86\uff0c\u800c\u662f\u5148\u5c06\u8be5\u8bb0\u5f55\u62f7\u8d1d\u4e00\u4efd\u653e\u5165undo log\u4e2d\uff0c\u7136\u540e\u5c06\u8be5\u8bb0\u5f55\u7684\u5220\u9664flag\u9690\u85cf\u5b57\u6bb5\u8bbe\u7f6e\u4e3a1\uff0c\u8fd9\u6837\u56de\u6eda\u540e\u8be5\u8bb0\u5f55\u7684\u5220\u9664flag\u9690\u85cf\u5b57\u6bb5\u5c31\u53c8\u53d8\u56de0\u4e86\uff0c\u76f8\u5f53\u4e8e\u5220\u9664\u7684\u6570\u636e\u53c8\u6062\u590d\u4e86\u3002<\/li>\n\n\n\n<li>\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u662f\u6ca1\u6709\u5386\u53f2\u7248\u672c\u7684\uff0c\u4f46\u662f\u4e00\u822c\u4e3a\u4e86\u56de\u6eda\u64cd\u4f5c\uff0c\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u4e5f\u9700\u8981\u62f7\u8d1d\u4e00\u4efd\u653e\u5165undo log\u4e2d\uff0c\u53ea\u4e0d\u8fc7\u88ab\u62f7\u8d1d\u5230undo log\u4e2d\u7684\u8bb0\u5f55\u7684\u5220\u9664flag\u9690\u85cf\u5b57\u6bb5\u88ab\u8bbe\u7f6e\u4e3a1\uff0c\u8fd9\u6837\u56de\u6eda\u540e\u5c31\u76f8\u5f53\u4e8e\u65b0\u63d2\u5165\u7684\u6570\u636e\u5c31\u88ab\u5220\u9664\u4e86\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u589e\u52a0\u3001\u5220\u9664\u548c\u4fee\u6539\u6570\u636e\u90fd\u662f\u53ef\u4ee5\u5f62\u6210\u7248\u672c\u94fe\u7684\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5f53\u524d\u8bfb VS \u5feb\u7167\u8bfb<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u524d\u8bfb\uff1a\u8bfb\u53d6\u6700\u65b0\u7684\u8bb0\u5f55\uff0c\u5c31\u53eb\u505a\u5f53\u524d\u8bfb\u3002<\/li>\n\n\n\n<li>\u5feb\u7167\u8bfb\uff1a\u8bfb\u53d6\u5386\u53f2\u7248\u672c\uff0c\u5c31\u53eb\u505a\u5feb\u7167\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e8b\u52a1\u5728\u8fdb\u884c\u589e\u5220\u67e5\u6539\u7684\u65f6\u5019\uff0c\u5e76\u4e0d\u662f\u90fd\u9700\u8981\u8fdb\u884c\u52a0\u9501\u4fdd\u62a4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u5bf9\u6570\u636e\u8fdb\u884c\u589e\u5220\u6539\u7684\u65f6\u5019\uff0c\u64cd\u4f5c\u7684\u90fd\u662f\u6700\u65b0\u8bb0\u5f55\uff0c\u5373\u5f53\u524d\u8bfb\uff0c\u9700\u8981\u8fdb\u884c\u52a0\u9501\u4fdd\u62a4\u3002<\/li>\n\n\n\n<li>\u4e8b\u52a1\u5728\u8fdb\u884cselect\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u65e2\u53ef\u80fd\u662f\u5f53\u524d\u8bfb\u4e5f\u53ef\u80fd\u662f\u5feb\u7167\u8bfb\uff0c\u5982\u679c\u662f\u5f53\u524d\u8bfb\uff0c\u90a3\u4e5f\u9700\u8981\u8fdb\u884c\u52a0\u9501\u4fdd\u62a4\uff0c\u4f46\u5982\u679c\u662f\u5feb\u7167\u8bfb\uff0c\u90a3\u5c31\u4e0d\u9700\u8981\u52a0\u9501\uff0c\u56e0\u4e3a\u5386\u53f2\u7248\u672c\u4e0d\u4f1a\u88ab\u4fee\u6539\uff0c\u4e5f\u5c31\u662f\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\uff0c\u63d0\u9ad8\u4e86\u6548\u7387\uff0c\u8fd9\u4e5f\u5c31\u662fMVCC\u7684\u610f\u4e49\u6240\u5728\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u800cselect\u67e5\u8be2\u65f6\u5e94\u8be5\u8fdb\u884c\u5f53\u524d\u8bfb\u8fd8\u662f\u5feb\u7167\u8bfb\uff0c\u5219\u662f\u7531\u9694\u79bb\u7ea7\u522b\u51b3\u5b9a\u7684\uff0c\u5728\u8bfb\u672a\u63d0\u4ea4\u548c\u4e32\u884c\u5316\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u8fdb\u884c\u7684\u90fd\u662f\u5f53\u524d\u8bfb\uff0c\u800c\u5728\u8bfb\u63d0\u4ea4\u548c\u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u65e2\u53ef\u80fd\u8fdb\u884c\u5f53\u524d\u8bfb\u4e5f\u53ef\u80fd\u8fdb\u884c\u5feb\u7167\u8bfb\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>undo log\u4e2d\u7684\u7248\u672c\u94fe\u4f55\u65f6\u624d\u4f1a\u88ab\u6e05\u9664\uff1f<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728undo log\u4e2d\u5f62\u6210\u7684\u7248\u672c\u94fe\u4e0d\u4ec5\u4ec5\u662f\u4e3a\u4e86\u8fdb\u884c\u56de\u6eda\u64cd\u4f5c\uff0c\u5176\u4ed6\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e5f\u53ef\u80fd\u8bfb\u53d6\u7248\u672c\u94fe\u4e2d\u7684\u67d0\u4e2a\u7248\u672c\uff0c\u4e5f\u5c31\u662f\u5feb\u7167\u8bfb\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u53ea\u6709\u5f53\u67d0\u6761\u8bb0\u5f55\u7684\u6700\u65b0\u7248\u672c\u5df2\u7ecf\u4fee\u6539\u5e76\u63d0\u4ea4\uff0c\u5e76\u4e14\u6b64\u65f6\u6ca1\u6709\u5176\u4ed6\u4e8b\u52a1\u4e0e\u8be5\u8bb0\u5f55\u7684\u5386\u53f2\u7248\u672c\u6709\u5173\u4e86\uff0c\u8fd9\u65f6\u8be5\u8bb0\u5f55\u5728undo log\u4e2d\u7684\u7248\u672c\u94fe\u624d\u53ef\u4ee5\u88ab\u6e05\u9664\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>\u5bf9\u4e8e\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u6765\u8bf4\uff0c\u6ca1\u6709\u5176\u4ed6\u4e8b\u52a1\u4f1a\u8bbf\u95ee\u5b83\u7684\u5386\u53f2\u7248\u672c\uff0c\u56e0\u6b64\u65b0\u63d2\u5165\u7684\u8bb0\u5f55\u5728\u63d0\u4ea4\u540e\u5c31\u53ef\u4ee5\u5c06undo log\u4e2d\u7684\u7248\u672c\u94fe\u6e05\u9664\u4e86\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\u7248\u672c\u94fe\u5728undo log\u4e2d\u53ef\u80fd\u4f1a\u5b58\u5728\u5f88\u957f\u65f6\u95f4\uff0c\u5c24\u5176\u662f\u6709\u5176\u4ed6\u4e8b\u52a1\u548c\u8fd9\u4e2a\u7248\u672c\u94fe\u76f8\u5173\u8054\u7684\u65f6\u5019\uff0c\u4f46\u8fd9\u4e5f\u6ca1\u6709\u574f\u5904\uff0c\u8fd9\u8bf4\u660e\u5b83\u662f\u4e00\u4e2a\u70ed\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Read View<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Read View<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u5728\u8fdb\u884c\u5feb\u7167\u8bfb\u64cd\u4f5c\u65f6\u4f1a\u751f\u6210\u8bfb\u89c6\u56feRead View\uff0c\u5728\u8be5\u4e8b\u52a1\u6267\u884c\u5feb\u7167\u8bfb\u7684\u90a3\u4e00\u523b\uff0c\u4f1a\u751f\u6210\u6570\u636e\u5e93\u7cfb\u7edf\u5f53\u524d\u7684\u4e00\u4e2a\u5feb\u7167\uff0c\u8bb0\u5f55\u5e76\u7ef4\u62a4\u7cfb\u7edf\u5f53\u524d\u6d3b\u8dc3\u7684\u4e8b\u52a1ID\u3002<\/li>\n\n\n\n<li>Read View\u5728MySQL\u6e90\u7801\u4e2d\u5c31\u662f\u4e00\u4e2a\u7c7b\uff0c\u672c\u8d28\u662f\u7528\u6765\u8fdb\u884c\u53ef\u89c1\u6027\u5224\u65ad\u7684\uff0c\u5f53\u4e8b\u52a1\u5bf9\u67d0\u4e2a\u8bb0\u5f55\u6267\u884c\u5feb\u7167\u8bfb\u7684\u65f6\u5019\uff0c\u5bf9\u8be5\u8bb0\u5f55\u521b\u5efa\u4e00\u4e2aRead View\uff0c\u6839\u636e\u8fd9\u4e2aRead View\u6765\u5224\u65ad\uff0c\u5f53\u524d\u4e8b\u52a1\u80fd\u591f\u770b\u5230\u8be5\u8bb0\u5f55\u7684\u54ea\u4e2a\u7248\u672c\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>ReadView\u7c7b\u7684\u6e90\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class ReadView {\n    \/\/ \u7701\u7565...\nprivate:\n    \/** \u9ad8\u6c34\u4f4d\uff1a\u5927\u4e8e\u7b49\u4e8e\u8fd9\u4e2aID\u7684\u4e8b\u52a1\u5747\u4e0d\u53ef\u89c1*\/\n    trx_id_t m_low_limit_id;\n\n    \/** \u4f4e\u6c34\u4f4d\uff1a\u5c0f\u4e8e\u8fd9\u4e2aID\u7684\u4e8b\u52a1\u5747\u53ef\u89c1 *\/\n    trx_id_t m_up_limit_id;\n\n    \/** \u521b\u5efa\u8be5 Read View \u7684\u4e8b\u52a1ID*\/\n    trx_id_t m_creator_trx_id;\n\n    \/** \u521b\u5efa\u89c6\u56fe\u65f6\u7684\u6d3b\u8dc3\u4e8b\u52a1id\u5217\u8868*\/\n    ids_t m_ids;\n\n    \/** \u914d\u5408purge\uff0c\u6807\u8bc6\u8be5\u89c6\u56fe\u4e0d\u9700\u8981\u5c0f\u4e8em_low_limit_no\u7684UNDO LOG\uff0c\n    * \u5982\u679c\u5176\u4ed6\u89c6\u56fe\u4e5f\u4e0d\u9700\u8981\uff0c\u5219\u53ef\u4ee5\u5220\u9664\u5c0f\u4e8em_low_limit_no\u7684UNDO LOG*\/\n    trx_id_t m_low_limit_no;\n\n    \/** \u6807\u8bb0\u89c6\u56fe\u662f\u5426\u88ab\u5173\u95ed*\/\n    bool m_closed;\n\n    \/\/ \u7701\u7565...\n};<\/code><\/pre>\n\n\n\n<p><strong>\u90e8\u5206\u6210\u5458\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>m_ids\uff1a<\/strong> \u4e00\u5f20\u5217\u8868\uff0c\u8bb0\u5f55Read View\u751f\u6210\u65f6\u523b\uff0c\u7cfb\u7edf\u4e2d\u6d3b\u8dc3\u7684\u4e8b\u52a1ID\u3002<\/li>\n\n\n\n<li><strong>m_up_limit_id\uff1a<\/strong> \u8bb0\u5f55m_ids\u5217\u8868\u4e2d\u4e8b\u52a1ID\u6700\u5c0f\u7684ID\u3002<\/li>\n\n\n\n<li><strong>m_low_limit_id\uff1a<\/strong> \u8bb0\u5f55Read View\u751f\u6210\u65f6\u523b\uff0c\u7cfb\u7edf\u5c1a\u672a\u5206\u914d\u7684\u4e0b\u4e00\u4e2a\u4e8b\u52a1ID\u3002<\/li>\n\n\n\n<li><strong>m_creator_trx_id\uff1a<\/strong> \u8bb0\u5f55\u521b\u5efa\u8be5Read View\u7684\u4e8b\u52a1\u7684\u4e8b\u52a1ID\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7531\u4e8e\u4e8b\u52a1ID\u662f\u5355\u5411\u589e\u957f\u7684\uff0c\u56e0\u6b64\u6839\u636eRead View\u4e2d\u7684m_up_limit_id\u548cm_low_limit_id\uff0c\u53ef\u4ee5\u5c06\u4e8b\u52a1ID\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1ID\u5c0f\u4e8em_up_limit_id\u7684\u4e8b\u52a1\uff0c\u4e00\u5b9a\u662f\u751f\u6210Read View\u65f6\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\uff0c\u56e0\u4e3am_up_limit_id\u662f\u751f\u6210Read View\u65f6\u523b\u7cfb\u7edf\u4e2d\u6d3b\u8dc3\u4e8b\u52a1ID\u4e2d\u7684\u6700\u5c0fID\uff0c\u56e0\u6b64\u4e8b\u52a1ID\u6bd4\u5b83\u5c0f\u7684\u4e8b\u52a1\u5728\u751f\u6210Read View\u65f6\u4e00\u5b9a\u5df2\u7ecf\u63d0\u4ea4\u4e86\u3002<\/li>\n\n\n\n<li>\u4e8b\u52a1ID\u5927\u4e8e\u7b49\u4e8em_low_limit_id\u7684\u4e8b\u52a1\uff0c\u4e00\u5b9a\u662f\u751f\u6210Read View\u65f6\u8fd8\u6ca1\u6709\u542f\u52a8\u7684\u4e8b\u52a1\uff0c\u56e0\u4e3am_low_limit_id\u662f\u751f\u6210Read View\u65f6\u523b\uff0c\u7cfb\u7edf\u5c1a\u672a\u5206\u914d\u7684\u4e0b\u4e00\u4e2a\u4e8b\u52a1ID\u3002<\/li>\n\n\n\n<li>\u4e8b\u52a1ID\u4f4d\u4e8em_up_limit_id\u548cm_low_limit_id\u4e4b\u95f4\u7684\u4e8b\u52a1\uff0c\u5728\u751f\u6210Read View\u65f6\u53ef\u80fd\u6b63\u5904\u4e8e\u6d3b\u8dc3\u72b6\u6001\uff0c\u4e5f\u53ef\u80fd\u5df2\u7ecf\u63d0\u4ea4\u4e86\uff0c\u8fd9\u65f6\u9700\u8981\u901a\u8fc7\u5224\u65ad\u4e8b\u52a1ID\u662f\u5426\u5b58\u5728\u4e8em_ids\u4e2d\u6765\u5224\u65ad\u8be5\u4e8b\u52a1\u662f\u5426\u5df2\u7ecf\u63d0\u4ea4\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\/2ce601ea8fe14f05bae00dd42180c394.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/2ce601ea8fe14f05bae00dd42180c394.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<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u4e8b\u52a1\u5728\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u53ea\u5e94\u8be5\u770b\u5230\u81ea\u5df1\u6216\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u6839\u636eRead View\u6765\u5224\u65ad\u5f53\u524d\u4e8b\u52a1\u80fd\u5426\u770b\u5230\u53e6\u4e00\u4e2a\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\u3002<\/li>\n\n\n\n<li>\u7248\u672c\u94fe\u4e2d\u7684\u6bcf\u4e2a\u7248\u672c\u7684\u8bb0\u5f55\u90fd\u6709\u81ea\u5df1\u7684DB_TRX_ID\uff0c\u5373\u521b\u5efa\u6216\u6700\u8fd1\u4e00\u6b21\u4fee\u6539\u8be5\u8bb0\u5f55\u7684\u4e8b\u52a1ID\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f9d\u6b21\u904d\u5386\u7248\u672c\u94fe\u4e2d\u7684\u5404\u4e2a\u7248\u672c\uff0c\u901a\u8fc7Read View\u6765\u5224\u65ad\u5f53\u524d\u4e8b\u52a1\u80fd\u5426\u770b\u5230\u8fd9\u4e2a\u7248\u672c\uff0c\u5982\u679c\u4e0d\u80fd\u5219\u7ee7\u7eed\u904d\u5386\u4e0b\u4e00\u4e2a\u7248\u672c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6e90\u7801\u7b56\u7565\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>bool changes_visible(trx_id_t id, const table_name_t&amp; name) const \n    MY_ATTRIBUTE((warn_unused_result))\n{\n    ut_ad(id &gt; 0);\n    \/\/1\u3001\u4e8b\u52a1id\u5c0f\u4e8em_up_limit_id\uff08\u5df2\u63d0\u4ea4\uff09\u6216\u4e8b\u52a1id\u4e3a\u521b\u5efa\u8be5Read View\u7684\u4e8b\u52a1\u7684id\uff0c\u5219\u53ef\u89c1\n    if (id &lt; m_up_limit_id || id == m_creator_trx_id) {\n        return(true);\n    }\n    check_trx_id_sanity(id, name);\n    \/\/2\u3001\u4e8b\u52a1id\u5927\u4e8e\u7b49\u4e8em_low_limit_id\uff08\u751f\u6210Read View\u65f6\u8fd8\u6ca1\u6709\u542f\u52a8\u7684\u4e8b\u52a1\uff09\uff0c\u5219\u4e0d\u53ef\u89c1\n    if (id &gt;= m_low_limit_id) {\n        return(false);\n    }\n    \/\/3\u3001\u4e8b\u52a1id\u4f4d\u4e8em_up_limit_id\u548cm_low_limit_id\u4e4b\u95f4\uff0c\u5e76\u4e14\u6d3b\u8dc3\u4e8b\u52a1id\u5217\u8868\u4e3a\u7a7a\uff08\u5373\u4e0d\u5728\u6d3b\u8dc3\u5217\u8868\u4e2d\uff09\uff0c\u5219\u53ef\u89c1\n    else if (m_ids.empty()) {\n        return(true);\n    }\n    const ids_t::value_type* p = m_ids.data();\n    \/\/4\u3001\u4e8b\u52a1id\u4f4d\u4e8em_up_limit_id\u548cm_low_limit_id\u4e4b\u95f4\uff0c\u5982\u679c\u5728\u6d3b\u8dc3\u4e8b\u52a1id\u5217\u8868\u4e2d\u5219\u4e0d\u53ef\u89c1\uff0c\u5982\u679c\u4e0d\u5728\u5219\u53ef\u89c1\n    return (!std::binary_search(p, p + m_ids.size(), id));\n}<\/code><\/pre>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong> \u4f7f\u7528\u8be5\u51fd\u6570\u65f6\u5c06\u7248\u672c\u7684DB_TRX_ID\u4f20\u7ed9\u53c2\u6570id\uff0c\u8be5\u51fd\u6570\u7684\u4f5c\u7528\u5c31\u662f\u6839\u636eRead view\uff0c\u5224\u65ad\u5f53\u524d\u4e8b\u52a1\u80fd\u5426\u770b\u5230\u8fd9\u4e2a\u7248\u672c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RR\u4e0eRC\u7684\u672c\u8d28\u533a\u522b<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u73b0\u8c61\u6f14\u793a<\/p>\n<\/blockquote>\n\n\n\n<p>\u542f\u52a8\u4e24\u4e2a\u7ec8\u7aef\uff0c\u5c06\u9694\u79bb\u7ea7\u522b\u90fd\u8bbe\u7f6e\u4e3a\u53ef\u91cd\u590d\u8bfb\uff0c\u5e76\u67e5\u770b\u6b64\u65f6\u94f6\u884c\u7528\u6237\u8868\u4e2d\u7684\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:\/\/cdn.codergodv.xyz\/a6b023bcf4804136ae299c9d2f89165a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a6b023bcf4804136ae299c9d2f89165a.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\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5728\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u64cd\u4f5c\u4e4b\u524d\uff0c\u5148\u8ba9\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u67e5\u770b\u4e00\u4e0b\u8868\u4e2d\u7684\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\/ce68b3456a574913b3ca22b50d6b5fa8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/ce68b3456a574913b3ca22b50d6b5fa8.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>\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5bf9\u8868\u4e2d\u7684\u4fe1\u606f\u8fdb\u884c\u4fee\u6539\u5e76\u63d0\u4ea4\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u770b\u4e0d\u5230\u4fee\u6539\u540e\u7684\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:\/\/cdn.codergodv.xyz\/7a99867771274efe808b73c3d82e99f2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/7a99867771274efe808b73c3d82e99f2.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\u53f3\u7ec8\u7aef\u4e2d\u4f7f\u7528<code>select ... lock in share mode<\/code>\u547d\u4ee4\u8fdb\u884c\u5f53\u524d\u8bfb\uff0c\u53ef\u4ee5\u770b\u5230\u8868\u4e2d\u7684\u6570\u636e\u786e\u5b9e\u662f\u88ab\u4fee\u6539\u4e86\uff0c\u53ea\u662f\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u770b\u4e0d\u5230\u800c\u5df2\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\/7183476a5426499992f3828529f7955d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/7183476a5426499992f3828529f7955d.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\u5982\u679c\u4fee\u6539\u4e00\u4e0bSQL\u7684\u6267\u884c\u987a\u5e8f\uff0c\u5728\u4e24\u4e2a\u7ec8\u7aef\u5404\u81ea\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\u540e\uff0c\u76f4\u63a5\u8ba9\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5bf9\u8868\u4e2d\u7684\u4fe1\u606f\u8fdb\u884c\u4fee\u6539\u5e76\u63d0\u4ea4\uff0c\u7136\u540e\u518d\u8ba9\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u8fdb\u884c\u67e5\u770b\uff0c\u8fd9\u65f6\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5c31\u76f4\u63a5\u770b\u5230\u4e86\u4fee\u6539\u540e\u7684\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:\/\/cdn.codergodv.xyz\/ff66fbdf094d4d3cacf25c2a9ded32d5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/ff66fbdf094d4d3cacf25c2a9ded32d5.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\u53f3\u7ec8\u7aef\u4e2d\u4f7f\u7528<code>select ... lock in share mode<\/code>\u547d\u4ee4\u8fdb\u884c\u5f53\u524d\u8bfb\uff0c\u53ef\u4ee5\u770b\u5230\u521a\u624d\u8bfb\u53d6\u5230\u7684\u786e\u5b9e\u662f\u6700\u65b0\u7684\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:\/\/cdn.codergodv.xyz\/bace128c6d5342a18781e623dc942a2d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/bace128c6d5342a18781e623dc942a2d.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>\u4e0a\u9762\u4e24\u6b21\u5b9e\u9a8c\u7684\u552f\u4e00\u533a\u522b\u5728\u4e8e\uff0c\u53f3\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u5728\u5de6\u7ec8\u7aef\u4e2d\u7684\u4e8b\u52a1\u4fee\u6539\u6570\u636e\u4e4b\u524d\u662f\u5426\u8fdb\u884c\u8fc7\u5feb\u7167\u8bfb\u3002<\/li>\n\n\n\n<li>\u7531\u4e8eRR\u7ea7\u522b\u4e0b\u8981\u6c42\u4e8b\u52a1\u5185\u6bcf\u6b21\u8bfb\u53d6\u5230\u7684\u7ed3\u679c\u5fc5\u987b\u662f\u76f8\u540c\u7684\uff0c\u56e0\u6b64\u4e8b\u52a1\u9996\u6b21\u8fdb\u884c\u5feb\u7167\u8bfb\u7684\u5730\u65b9\uff0c\u51b3\u5b9a\u4e86\u8be5\u4e8b\u52a1\u540e\u7eed\u5feb\u7167\u8bfb\u7ed3\u679c\u7684\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>RR\u548cRC\u7684\u672c\u8d28\u533a\u522b<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b63\u662f\u56e0\u4e3aRead View\u751f\u6210\u65f6\u673a\u7684\u4e0d\u540c\uff0c\u4ece\u800c\u9020\u6210RCh\u548cRR\u7ea7\u522b\u4e0b\u5feb\u7167\u8bfb\u7684\u7ed3\u679c\u7684\u4e0d\u540c\u3002<\/li>\n\n\n\n<li>\u5728RR\u7ea7\u522b\u4e0b\uff0c\u4e8b\u52a1\u7b2c\u4e00\u6b21\u8fdb\u884c\u5feb\u7167\u8bfb\u65f6\u4f1a\u521b\u5efa\u4e00\u4e2aRead View\uff0c\u5c06\u5f53\u524d\u7cfb\u7edf\u4e2d\u6d3b\u8dc3\u7684\u4e8b\u52a1\u8bb0\u5f55\u4e0b\u6765\uff0c\u6b64\u540e\u518d\u8fdb\u884c\u5feb\u7167\u8bfb\u65f6\u5c31\u4f1a\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2aRead View\u8fdb\u884c\u53ef\u89c1\u6027\u5224\u65ad\uff0c\u56e0\u6b64\u5f53\u524d\u4e8b\u52a1\u770b\u4e0d\u5230\u7b2c\u4e00\u6b21\u5feb\u7167\u8bfb\u4e4b\u540e\u5176\u4ed6\u4e8b\u52a1\u6240\u4f5c\u7684\u4fee\u6539\u3002<\/li>\n\n\n\n<li>\u800c\u5728RC\u7ea7\u522b\u4e0b\uff0c\u4e8b\u52a1\u6bcf\u6b21\u8fdb\u884c\u5feb\u7167\u8bfb\u65f6\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2aRead View\uff0c\u7136\u540e\u6839\u636e\u8fd9\u4e2aRead View\u8fdb\u884c\u53ef\u89c1\u6027\u5224\u65ad\uff0c\u56e0\u6b64\u6bcf\u6b21\u5feb\u7167\u8bfb\u65f6\u90fd\u80fd\u8bfb\u53d6\u5230\u88ab\u63d0\u4ea4\u4e86\u7684\u6700\u65b0\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>RR\u7ea7\u522b\u4e0b\u5feb\u7167\u8bfb\u53ea\u4f1a\u521b\u5efa\u4e00\u6b21Read View\uff0c\u6240\u4ee5RR\u7ea7\u522b\u662f\u53ef\u91cd\u590d\u8bfb\u7684\uff0c\u800cRC\u7ea7\u522b\u4e0b\u6bcf\u6b21\u5feb\u7167\u8bfb\u90fd\u4f1a\u521b\u5efa\u65b0\u7684Read View\uff0c\u6240\u4ee5RC\u7ea7\u522b\u662f\u4e0d\u53ef\u91cd\u590d\u8bfb\u7684\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u4e8b\u52a1\u7ba1\u7406 \u4e8b\u52a1\u7684\u6982\u5ff5 \u4e8b\u52a1\u7684\u6982\u5ff5 \u56e0\u6b64\u4e00\u4e2a\u5b8c\u6574\u7684\u4e8b\u52a1\u5e76\u4e0d\u662f\u7b80\u5355\u7684SQL\u96c6\u5408\uff0c\u4e8b\u52a1\u8fd8\u9700\u8981\u6ee1\u8db3\u5982\u4e0b\u56db\u4e2a\u5c5e 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