{"id":360,"date":"2024-11-26T11:20:16","date_gmt":"2024-11-26T03:20:16","guid":{"rendered":"http:\/\/blog.kijk.top\/?p=360"},"modified":"2024-11-26T11:20:16","modified_gmt":"2024-11-26T03:20:16","slug":"mysql%e7%b4%a2%e5%bc%95%e4%b9%8b-b%e6%a0%91%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/blog.kijk.top\/?p=360","title":{"rendered":"MySQL\u7d22\u5f15\u4e4b B+\u6811\u8be6\u89e3"},"content":{"rendered":"\n<p>\u8f6c\u8f7d\u4e8e\uff1a<a href=\"https:\/\/www.cnblogs.com\/zhuyeshen\/p\/12082839.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.cnblogs.com\/zhuyeshen\/p\/12082839.html<\/a><\/p>\n\n\n\n<p>\u7d22\u5f15\u662f\u4e00\u79cd<a href=\"https:\/\/edu.csdn.net\/cloud\/pm_summit?utm_source=blogglc\" target=\"_blank\" rel=\"noreferrer noopener\">\u6570\u636e\u7ed3\u6784<\/a>\uff0c\u7528\u4e8e\u5e2e\u52a9\u6211\u4eec\u5728\u5927\u91cf\u6570\u636e\u4e2d\u5feb\u901f\u5b9a\u4f4d\u5230\u6211\u4eec\u60f3\u8981\u67e5\u627e\u7684\u6570\u636e\u3002<br>\u7d22\u5f15\u6700\u5f62\u8c61\u7684\u6bd4\u55bb\u5c31\u662f\u56fe\u4e66\u7684\u76ee\u5f55\u4e86\u3002\u6ce8\u610f\u8fd9\u91cc\u7684\u5927\u91cf\uff0c\u6570\u636e\u91cf\u5927\u4e86\u7d22\u5f15\u624d\u663e\u5f97\u6709\u610f\u4e49\uff0c\u5982\u679c\u6211\u60f3\u8981\u5728 [1,2,3,4] \u4e2d\u627e\u5230 4 \u8fd9\u4e2a\u6570\u636e\uff0c\u76f4\u63a5\u5bf9\u5168\u6570\u636e\u68c0\u7d22\u4e5f\u5f88\u5feb\uff0c\u6ca1\u6709\u5fc5\u8981\u8d39\u529b\u6c14\u5efa\u7d22\u5f15\u518d\u53bb\u67e5\u627e\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4>\u7d22\u5f15\u5728\u00a0MySQL\u00a0\u6570\u636e\u5e93\u4e2d\u5206\u4e09\u7c7b\uff1a<\/h4>\n\n\n\n<ul><li>B+ \u6811\u7d22\u5f15<\/li><li>Hash \u7d22\u5f15<\/li><li>\u5168\u6587\u7d22\u5f15<\/li><\/ul>\n\n\n\n<p>\u6211\u4eec\u4eca\u5929\u8981\u4ecb\u7ecd\u7684\u662f\u5de5\u4f5c\u5f00\u53d1\u4e2d\u6700\u5e38\u63a5\u89e6\u5230\u7684 InnoDB \u5b58\u50a8\u5f15\u64ce\u4e2d\u7684 B+ \u6811\u7d22\u5f15\u3002\u8981\u4ecb\u7ecd B+ \u6811\u7d22\u5f15\uff0c\u5c31\u4e0d\u5f97\u4e0d\u63d0\u4e8c\u53c9\u67e5\u627e\u6811\uff0c\u5e73\u8861<a href=\"https:\/\/edu.csdn.net\/cloud\/pm_summit?utm_source=blogglc\" target=\"_blank\" rel=\"noreferrer noopener\">\u4e8c\u53c9\u6811<\/a>\u548c B \u6811\u8fd9\u4e09\u79cd\u6570\u636e\u7ed3\u6784\u3002B+ \u6811\u5c31\u662f\u4ece\u4ed6\u4eec\u4ee8\u6f14\u5316\u6765\u7684\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3>\u4e8c\u53c9\u67e5\u627e\u6811<\/h3>\n\n\n\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u5148\u770b\u4e00\u5f20\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"796\" height=\"403\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0aca079550449c5288e1347e830a4bdd.jpg\" alt=\"\" class=\"wp-image-361\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0aca079550449c5288e1347e830a4bdd.jpg 796w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0aca079550449c5288e1347e830a4bdd-300x152.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0aca079550449c5288e1347e830a4bdd-768x389.jpg 768w\" sizes=\"(max-width: 796px) 100vw, 796px\" \/><\/figure>\n\n\n\n<p>\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u4e3a user \u8868\uff08\u7528\u6237\u4fe1\u606f\u8868\uff09\u5efa\u7acb\u4e86\u4e00\u4e2a\u4e8c\u53c9\u67e5\u627e\u6811\u7684\u7d22\u5f15\u3002<\/p>\n\n\n\n<p>\u56fe\u4e2d\u7684\u5706\u4e3a\u4e8c\u53c9\u67e5\u627e\u6811\u7684\u8282\u70b9\uff0c\u8282\u70b9\u4e2d\u5b58\u50a8\u4e86\u952e\uff08key\uff09\u548c\u6570\u636e\uff08data\uff09\u3002\u952e\u5bf9\u5e94 user \u8868\u4e2d\u7684 id\uff0c\u6570\u636e\u5bf9\u5e94 user \u8868\u4e2d\u7684\u884c\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u4e8c\u53c9\u67e5\u627e\u6811\u7684\u7279\u70b9\u5c31\u662f\u4efb\u4f55\u8282\u70b9\u7684\u5de6\u5b50\u8282\u70b9\u7684\u952e\u503c\u90fd\u5c0f\u4e8e\u5f53\u524d\u8282\u70b9\u7684\u952e\u503c\uff0c\u53f3\u5b50\u8282\u70b9\u7684\u952e\u503c\u90fd\u5927\u4e8e\u5f53\u524d\u8282\u70b9\u7684\u952e\u503c\u3002\u9876\u7aef\u7684\u8282\u70b9\u6211\u4eec\u79f0\u4e3a\u6839\u8282\u70b9\uff0c\u6ca1\u6709\u5b50\u8282\u70b9\u7684\u8282\u70b9\u6211\u4eec\u79f0\u4e4b\u4e3a\u53f6\u8282\u70b9\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6211\u4eec\u9700\u8981\u67e5\u627e id=12 \u7684\u7528\u6237\u4fe1\u606f\uff0c\u5229\u7528\u6211\u4eec\u521b\u5efa\u7684\u4e8c\u53c9\u67e5\u627e\u6811\u7d22\u5f15\uff0c\u67e5\u627e\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul><li>\u5c06\u6839\u8282\u70b9\u4f5c\u4e3a\u5f53\u524d\u8282\u70b9\uff0c\u628a 12 \u4e0e\u5f53\u524d\u8282\u70b9\u7684\u952e\u503c 10 \u6bd4\u8f83\uff0c12 \u5927\u4e8e 10\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u628a\u5f53\u524d\u8282\u70b9&gt;\u7684\u53f3\u5b50\u8282\u70b9\u4f5c\u4e3a\u5f53\u524d\u8282\u70b9\u3002<\/li><li>\u7ee7\u7eed\u628a 12 \u548c\u5f53\u524d\u8282\u70b9\u7684\u952e\u503c 13 \u6bd4\u8f83\uff0c\u53d1\u73b0 12 \u5c0f\u4e8e 13\uff0c\u628a\u5f53\u524d\u8282\u70b9\u7684\u5de6\u5b50\u8282\u70b9\u4f5c\u4e3a\u5f53\u524d\u8282\u70b9\u3002<\/li><li>\u628a 12 \u548c\u5f53\u524d\u8282\u70b9\u7684\u952e\u503c 12 \u5bf9\u6bd4\uff0c12 \u7b49\u4e8e 12\uff0c\u6ee1\u8db3\u6761\u4ef6\uff0c\u6211\u4eec\u4ece\u5f53\u524d\u8282\u70b9\u4e2d\u53d6\u51fa data\uff0c\u5373 id=12\uff0cname=xm\u3002<\/li><\/ul>\n\n\n\n<p>\u5229\u7528\u4e8c\u53c9\u67e5\u627e\u6811\u6211\u4eec\u53ea\u9700\u8981 3 \u6b21\u5373\u53ef\u627e\u5230\u5339\u914d\u7684\u6570\u636e\u3002\u5982\u679c\u5728\u8868\u4e2d\u4e00\u6761\u6761\u7684\u67e5\u627e\u7684\u8bdd\uff0c\u6211\u4eec\u9700\u8981 6 \u6b21\u624d\u80fd\u627e\u5230\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3>\u5e73\u8861\u4e8c\u53c9\u6811<\/h3>\n\n\n\n<p>\u4e0a\u9762\u6211\u4eec\u8bb2\u89e3\u4e86\u5229\u7528\u4e8c\u53c9\u67e5\u627e\u6811\u53ef\u4ee5\u5feb\u901f\u7684\u627e\u5230\u6570\u636e\u3002\u4f46\u662f\uff0c\u5982\u679c\u4e0a\u9762\u7684\u4e8c\u53c9\u67e5\u627e\u6811\u662f\u8fd9\u6837\u7684\u6784\u9020\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"544\" height=\"527\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/df32fac883cc79812c7a0d1ba8692a6c.jpg\" alt=\"\" class=\"wp-image-363\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/df32fac883cc79812c7a0d1ba8692a6c.jpg 544w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/df32fac883cc79812c7a0d1ba8692a6c-300x291.jpg 300w\" sizes=\"(max-width: 544px) 100vw, 544px\" \/><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u65f6\u5019\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u7684\u4e8c\u53c9\u67e5\u627e\u6811\u53d8\u6210\u4e86\u4e00\u4e2a<a rel=\"noreferrer noopener\" href=\"https:\/\/edu.csdn.net\/cloud\/pm_summit?utm_source=blogglc\" target=\"_blank\">\u94fe\u8868<\/a>\u3002\u5982\u679c\u6211\u4eec\u9700\u8981\u67e5\u627e id=17 \u7684\u7528\u6237\u4fe1\u606f\uff0c\u6211\u4eec\u9700\u8981\u67e5\u627e 7 \u6b21\uff0c\u4e5f\u5c31\u76f8\u5f53\u4e8e\u5168\u8868\u626b\u63cf\u4e86\u3002\u00a0\u5bfc\u81f4\u8fd9\u4e2a\u73b0\u8c61\u7684\u539f\u56e0\u5176\u5b9e\u662f\u4e8c\u53c9\u67e5\u627e\u6811\u53d8\u5f97\u4e0d\u5e73\u8861\u4e86\uff0c\u4e5f\u5c31\u662f\u9ad8\u5ea6\u592a\u9ad8\u4e86\uff0c\u4ece\u800c\u5bfc\u81f4\u67e5\u627e\u6548\u7387\u7684\u4e0d\u7a33\u5b9a\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u9700\u8981\u4fdd\u8bc1\u4e8c\u53c9\u67e5\u627e\u6811\u4e00\u76f4\u4fdd\u6301\u5e73\u8861\uff0c\u5c31\u9700\u8981\u7528\u5230\u5e73\u8861\u4e8c\u53c9\u6811\u4e86\u3002\u00a0\u5e73\u8861\u4e8c\u53c9\u6811\u53c8\u79f0 AVL \u6811\uff0c\u5728\u6ee1\u8db3\u4e8c\u53c9\u67e5\u627e\u6811\u7279\u6027\u7684\u57fa\u7840\u4e0a\uff0c\u8981\u6c42\u6bcf\u4e2a\u8282\u70b9\u7684\u5de6\u53f3\u5b50\u6811\u7684\u9ad8\u5ea6\u5dee\u4e0d\u80fd\u8d85\u8fc7 1\u3002\u00a0\u4e0b\u9762\u662f\u5e73\u8861\u4e8c\u53c9\u6811\u548c\u975e\u5e73\u8861\u4e8c\u53c9\u6811\u7684\u5bf9\u6bd4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"824\" height=\"556\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5211b9089b2a9d0ffb3c6c4f35cda7fc.jpg\" alt=\"\" class=\"wp-image-364\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5211b9089b2a9d0ffb3c6c4f35cda7fc.jpg 824w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5211b9089b2a9d0ffb3c6c4f35cda7fc-300x202.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5211b9089b2a9d0ffb3c6c4f35cda7fc-768x518.jpg 768w\" sizes=\"(max-width: 824px) 100vw, 824px\" \/><\/figure>\n\n\n\n<p>\u7531\u5e73\u8861\u4e8c\u53c9\u6811\u7684\u6784\u9020\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u7b2c\u4e00\u5f20\u56fe\u4e2d\u7684\u4e8c\u53c9\u6811\u5176\u5b9e\u5c31\u662f\u4e00\u68f5\u5e73\u8861\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n<p>\u5e73\u8861\u4e8c\u53c9\u6811\u4fdd\u8bc1\u4e86\u6811\u7684\u6784\u9020\u662f\u5e73\u8861\u7684\uff0c\u5f53\u6211\u4eec\u63d2\u5165\u6216\u5220\u9664\u6570\u636e\u5bfc\u81f4\u4e0d\u6ee1\u8db3\u5e73\u8861\u4e8c\u53c9\u6811\u4e0d\u5e73\u8861\u65f6\uff0c\u5e73\u8861\u4e8c\u53c9\u6811\u4f1a\u8fdb\u884c\u8c03\u6574\u6811\u4e0a\u7684\u8282\u70b9\u6765\u4fdd\u6301\u5e73\u8861\u3002\u5177\u4f53\u7684\u8c03\u6574\u65b9\u5f0f\u8fd9\u91cc\u5c31\u4e0d\u4ecb\u7ecd\u4e86\u3002\u5e73\u8861\u4e8c\u53c9\u6811\u76f8\u6bd4\u4e8e\u4e8c\u53c9\u67e5\u627e\u6811\u6765\u8bf4\uff0c\u67e5\u627e\u6548\u7387\u66f4\u7a33\u5b9a\uff0c\u603b\u4f53\u7684\u67e5\u627e\u901f\u5ea6\u4e5f\u66f4\u5feb\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3>B \u6811<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u5185\u5b58\u7684\u6613\u5931\u6027\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u90fd\u4f1a\u9009\u62e9\u5c06 user \u8868\u4e2d\u7684\u6570\u636e\u548c\u7d22\u5f15\u5b58\u50a8\u5728\u78c1\u76d8\u8fd9\u79cd\u5916\u56f4\u8bbe\u5907\u4e2d\u3002\u4f46\u662f\u548c\u5185\u5b58\u76f8\u6bd4\uff0c\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u6570\u636e\u7684\u901f\u5ea6\u4f1a\u6162\u4e0a\u767e\u500d\u5343\u500d\u751a\u81f3\u4e07\u500d\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u5e94\u5f53\u5c3d\u91cf\u51cf\u5c11\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u6570\u636e\u7684\u6b21\u6570\u3002\u53e6\u5916\uff0c\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u90fd\u662f\u6309\u7167\u78c1\u76d8\u5757\u6765\u8bfb\u53d6\u7684\uff0c\u5e76\u4e0d\u662f\u4e00\u6761\u4e00\u6761\u7684\u8bfb\u3002\u5982\u679c\u6211\u4eec\u80fd\u628a\u5c3d\u91cf\u591a\u7684\u6570\u636e\u653e\u8fdb\u78c1\u76d8\u5757\u4e2d\uff0c\u90a3\u4e00\u6b21\u78c1\u76d8\u8bfb\u53d6\u64cd\u4f5c\u5c31\u4f1a\u8bfb\u53d6\u66f4\u591a\u6570\u636e\uff0c\u90a3\u6211\u4eec\u67e5\u627e\u6570\u636e\u7684\u65f6\u95f4\u4e5f\u4f1a\u5927\u5e45\u5ea6\u964d\u4f4e\u3002\u5982\u679c\u6211\u4eec\u7528\u6811\u8fd9\u79cd\u6570\u636e\u7ed3\u6784\u4f5c\u4e3a\u7d22\u5f15\u7684\u6570\u636e\u7ed3\u6784\uff0c\u90a3\u6211\u4eec\u6bcf\u67e5\u627e\u4e00\u6b21\u6570\u636e\u5c31\u9700\u8981\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u4e00\u4e2a\u8282\u70b9\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u8bf4\u7684\u4e00\u4e2a\u78c1\u76d8\u5757\u3002\u6211\u4eec\u90fd\u77e5\u9053\u5e73\u8861\u4e8c\u53c9\u6811\u53ef\u662f\u6bcf\u4e2a\u8282\u70b9\u53ea\u5b58\u50a8\u4e00\u4e2a\u952e\u503c\u548c\u6570\u636e\u7684\u3002\u90a3\u8bf4\u660e\u4ec0\u4e48\uff1f\u8bf4\u660e\u6bcf\u4e2a\u78c1\u76d8\u5757\u4ec5\u4ec5\u5b58\u50a8\u4e00\u4e2a\u952e\u503c\u548c\u6570\u636e\uff01\u90a3\u5982\u679c\u6211\u4eec\u8981\u5b58\u50a8\u6d77\u91cf\u7684\u6570\u636e\u5462\uff1f<\/p>\n\n\n\n<p>\u53ef\u4ee5\u60f3\u8c61\u5230\u4e8c\u53c9\u6811\u7684\u8282\u70b9\u5c06\u4f1a\u975e\u5e38\u591a\uff0c\u9ad8\u5ea6\u4e5f\u4f1a\u6781\u5176\u9ad8\uff0c\u6211\u4eec\u67e5\u627e\u6570\u636e\u65f6\u4e5f\u4f1a\u8fdb\u884c\u5f88\u591a\u6b21\u78c1\u76d8 IO\uff0c\u6211\u4eec\u67e5\u627e\u6570\u636e\u7684\u6548\u7387\u5c06\u4f1a\u6781\u4f4e\uff01<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"784\" height=\"426\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/c2dd5d889eae3d8e03ae2c1225193081.jpg\" alt=\"\" class=\"wp-image-365\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/c2dd5d889eae3d8e03ae2c1225193081.jpg 784w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/c2dd5d889eae3d8e03ae2c1225193081-300x163.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/c2dd5d889eae3d8e03ae2c1225193081-768x417.jpg 768w\" sizes=\"(max-width: 784px) 100vw, 784px\" \/><\/figure>\n\n\n\n<p>\u4e3a\u4e86\u89e3\u51b3\u5e73\u8861\u4e8c\u53c9\u6811\u7684\u8fd9\u4e2a\u5f0a\u7aef\uff0c\u6211\u4eec\u5e94\u8be5\u5bfb\u627e\u4e00\u79cd\u5355\u4e2a\u8282\u70b9\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u952e\u503c\u548c\u6570\u636e\u7684\u5e73\u8861\u6811\u3002\u4e5f\u5c31\u662f\u6211\u4eec\u63a5\u4e0b\u6765\u8981\u8bf4\u7684 B \u6811\u3002<\/p>\n\n\n\n<p>B \u6811\uff08Balance Tree\uff09\u5373\u4e3a\u5e73\u8861\u6811\u7684\u610f\u601d\uff0c\u4e0b\u56fe\u5373\u662f\u4e00\u68f5&nbsp;B \u6811\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"442\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/95d7fecc516eb9c989e62c8033fd72cc-1024x442.jpg\" alt=\"\" class=\"wp-image-366\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/95d7fecc516eb9c989e62c8033fd72cc-1024x442.jpg 1024w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/95d7fecc516eb9c989e62c8033fd72cc-300x130.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/95d7fecc516eb9c989e62c8033fd72cc-768x332.jpg 768w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/95d7fecc516eb9c989e62c8033fd72cc.jpg 1060w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u56fe\u4e2d\u7684 p \u8282\u70b9\u4e3a\u6307\u5411\u5b50\u8282\u70b9\u7684\u6307\u9488\uff0c\u4e8c\u53c9\u67e5\u627e\u6811\u548c\u5e73\u8861\u4e8c\u53c9\u6811\u5176\u5b9e\u4e5f\u6709\uff0c\u56e0\u4e3a\u56fe\u7684\u7f8e\u89c2\u6027\uff0c\u88ab\u7701\u7565\u4e86\u3002<\/p>\n\n\n\n<p>\u56fe\u4e2d\u7684\u6bcf\u4e2a\u8282\u70b9\u79f0\u4e3a\u9875\uff0c\u9875\u5c31\u662f\u6211\u4eec\u4e0a\u9762\u8bf4\u7684\u78c1\u76d8\u5757\uff0c\u5728 MySQL \u4e2d\u6570\u636e\u8bfb\u53d6\u7684\u57fa\u672c\u5355\u4f4d\u90fd\u662f\u9875\uff0c\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u53eb\u505a\u9875\u66f4\u7b26\u5408 MySQL \u4e2d\u7d22\u5f15\u7684\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0cB \u6811\u76f8\u5bf9\u4e8e\u5e73\u8861\u4e8c\u53c9\u6811\uff0c\u6bcf\u4e2a\u8282\u70b9\u5b58\u50a8\u4e86\u66f4\u591a\u7684\u952e\u503c\uff08key\uff09\u548c\u6570\u636e\uff08data\uff09\uff0c\u5e76\u4e14\u6bcf\u4e2a\u8282\u70b9\u62e5\u6709\u66f4\u591a\u7684\u5b50\u8282\u70b9\uff0c\u5b50\u8282\u70b9\u7684\u4e2a\u6570\u4e00\u822c\u79f0\u4e3a\u9636\uff0c\u4e0a\u8ff0\u56fe\u4e2d\u7684 B \u6811\u4e3a 3 \u9636 B \u6811\uff0c\u9ad8\u5ea6\u4e5f\u4f1a\u5f88\u4f4e\u3002<\/p>\n\n\n\n<p>\u57fa\u4e8e\u8fd9\u4e2a\u7279\u6027\uff0cB \u6811\u67e5\u627e\u6570\u636e\u8bfb\u53d6\u78c1\u76d8\u7684\u6b21\u6570\u5c06\u4f1a\u5f88\u5c11\uff0c\u6570\u636e\u7684\u67e5\u627e\u6548\u7387\u4e5f\u4f1a\u6bd4\u5e73\u8861\u4e8c\u53c9\u6811\u9ad8\u5f88\u591a\u3002<\/p>\n\n\n\n<p>\u5047\u5982\u6211\u4eec\u8981\u67e5\u627e id=28 \u7684\u7528\u6237\u4fe1\u606f\uff0c\u90a3\u4e48\u6211\u4eec\u5728\u4e0a\u56fe B \u6811\u4e2d\u67e5\u627e\u7684\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul><li>\u5148\u627e\u5230\u6839\u8282\u70b9\u4e5f\u5c31\u662f\u9875 1\uff0c\u5224\u65ad 28 \u5728\u952e\u503c 17 \u548c 35 \u4e4b\u95f4\uff0c\u90a3\u4e48\u6211\u4eec\u6839\u636e\u9875 1 \u4e2d\u7684\u6307\u9488 p2 \u627e\u5230\u9875 3\u3002<\/li><li>\u5c06 28 \u548c\u9875 3 \u4e2d\u7684\u952e\u503c\u76f8\u6bd4\u8f83\uff0c28 \u5728 26 \u548c 30 \u4e4b\u95f4\uff0c\u6211\u4eec\u6839\u636e\u9875 3 \u4e2d\u7684\u6307\u9488 p2 \u627e\u5230\u9875 8\u3002<\/li><li>\u5c06&nbsp;28 \u548c\u9875 8 \u4e2d\u7684\u952e\u503c\u76f8\u6bd4\u8f83\uff0c\u53d1\u73b0\u6709\u5339\u914d\u7684\u952e\u503c 28\uff0c\u952e\u503c 28 \u5bf9\u5e94\u7684\u7528\u6237\u4fe1\u606f\u4e3a\uff0828\uff0cbv\uff09\u3002<\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3>B+ \u6811<\/h3>\n\n\n\n<p>B+&nbsp;\u6811\u662f\u5bf9 B \u6811\u7684\u8fdb\u4e00\u6b65\u4f18\u5316\u3002\u8ba9\u6211\u4eec\u5148\u6765\u770b\u4e0b B+ \u6811\u7684\u7ed3\u6784\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"856\" height=\"558\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/cb74d6bae7d381898ff5df31e82d4a48.jpg\" alt=\"\" class=\"wp-image-367\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/cb74d6bae7d381898ff5df31e82d4a48.jpg 856w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/cb74d6bae7d381898ff5df31e82d4a48-300x196.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/cb74d6bae7d381898ff5df31e82d4a48-768x501.jpg 768w\" sizes=\"(max-width: 856px) 100vw, 856px\" \/><\/figure>\n\n\n\n<p>\u6839\u636e\u4e0a\u56fe\u6211\u4eec\u6765\u770b\u4e0b B+&nbsp;\u6811\u548c B \u6811\u6709\u4ec0\u4e48\u4e0d\u540c\uff1a<\/p>\n\n\n\n<p>\u2460B+&nbsp;\u6811\u975e\u53f6\u5b50\u8282\u70b9\u4e0a\u662f\u4e0d\u5b58\u50a8\u6570\u636e\u7684\uff0c\u4ec5\u5b58\u50a8\u952e\u503c\uff0c\u800c B \u6811\u8282\u70b9\u4e2d\u4e0d\u4ec5\u5b58\u50a8\u952e\u503c\uff0c\u4e5f\u4f1a\u5b58\u50a8\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u4e4b\u6240\u4ee5\u8fd9\u4e48\u505a\u662f\u56e0\u4e3a\u5728\u6570\u636e\u5e93\u4e2d\u9875\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0cInnoDB \u4e2d\u9875\u7684\u9ed8\u8ba4\u5927\u5c0f\u662f 16KB\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4e0d\u5b58\u50a8\u6570\u636e\uff0c\u90a3\u4e48\u5c31\u4f1a\u5b58\u50a8\u66f4\u591a\u7684\u952e\u503c\uff0c\u76f8\u5e94\u7684\u6811\u7684\u9636\u6570\uff08\u8282\u70b9\u7684\u5b50\u8282\u70b9\u6811\uff09\u5c31\u4f1a\u66f4\u5927\uff0c\u6811\u5c31\u4f1a\u66f4\u77ee\u66f4\u80d6\uff0c\u5982\u6b64\u4e00\u6765\u6211\u4eec\u67e5\u627e\u6570\u636e\u8fdb\u884c\u78c1\u76d8\u7684 IO \u6b21\u6570\u53c8\u4f1a\u518d\u6b21\u51cf\u5c11\uff0c\u6570\u636e\u67e5\u8be2\u7684\u6548\u7387\u4e5f\u4f1a\u66f4\u5feb\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\uff0cB+ \u6811\u7684\u9636\u6570\u662f\u7b49\u4e8e\u952e\u503c\u7684\u6570\u91cf\u7684\uff0c\u5982\u679c\u6211\u4eec\u7684 B+ \u6811\u4e00\u4e2a\u8282\u70b9\u53ef\u4ee5\u5b58\u50a8 1000&nbsp;\u4e2a\u952e\u503c\uff0c\u90a3\u4e48 3 \u5c42 B+ \u6811\u53ef\u4ee5\u5b58\u50a8 1000\u00d71000\u00d71000=10 \u4ebf\u4e2a\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u4e00\u822c\u6839\u8282\u70b9\u662f\u5e38\u9a7b\u5185\u5b58\u7684\uff0c\u6240\u4ee5\u4e00\u822c\u6211\u4eec\u67e5\u627e 10 \u4ebf\u6570\u636e\uff0c\u53ea\u9700\u8981 2 \u6b21\u78c1\u76d8 IO\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u2461\u56e0\u4e3a B+ \u6811\u7d22\u5f15\u7684\u6240\u6709\u6570\u636e\u5747\u5b58\u50a8\u5728\u53f6\u5b50\u8282\u70b9\uff0c\u800c\u4e14\u6570\u636e\u662f\u6309\u7167\u987a\u5e8f\u6392\u5217\u7684\u3002<\/p>\n\n\n\n<p>\u90a3\u4e48 B+ \u6811\u4f7f\u5f97\u8303\u56f4\u67e5\u627e\uff0c\u6392\u5e8f\u67e5\u627e\uff0c\u5206\u7ec4\u67e5\u627e\u4ee5\u53ca\u53bb\u91cd\u67e5\u627e\u53d8\u5f97\u5f02\u5e38\u7b80\u5355\u3002\u800c B \u6811\u56e0\u4e3a\u6570\u636e\u5206\u6563\u5728\u5404\u4e2a\u8282\u70b9\uff0c\u8981\u5b9e\u73b0\u8fd9\u4e00\u70b9\u662f\u5f88\u4e0d\u5bb9\u6613\u7684\u3002<\/p>\n\n\n\n<p>\u6709\u5fc3\u7684\u8bfb\u8005\u53ef\u80fd\u8fd8\u53d1\u73b0\u4e0a\u56fe B+ \u6811\u4e2d\u5404\u4e2a\u9875\u4e4b\u95f4\u662f\u901a\u8fc7\u53cc\u5411\u94fe\u8868\u8fde\u63a5\u7684\uff0c\u53f6\u5b50\u8282\u70b9\u4e2d\u7684\u6570\u636e\u662f\u901a\u8fc7\u5355\u5411\u94fe\u8868\u8fde\u63a5\u7684\u3002<\/p>\n\n\n\n<p>\u5176\u5b9e\u4e0a\u9762\u7684 B \u6811\u6211\u4eec\u4e5f\u53ef\u4ee5\u5bf9\u5404\u4e2a\u8282\u70b9\u52a0\u4e0a\u94fe\u8868\u3002\u8fd9\u4e9b\u4e0d\u662f\u5b83\u4eec\u4e4b\u524d\u7684\u533a\u522b\uff0c\u662f\u56e0\u4e3a\u5728 MySQL \u7684 InnoDB \u5b58\u50a8\u5f15\u64ce\u4e2d\uff0c\u7d22\u5f15\u5c31\u662f\u8fd9\u6837\u5b58\u50a8\u7684\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\u4e0a\u56fe\u4e2d\u7684 B+ \u6811\u7d22\u5f15\u5c31\u662f InnoDB \u4e2d B+ \u6811\u7d22\u5f15\u771f\u6b63\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u51c6\u786e\u7684\u8bf4\u5e94\u8be5\u662f\u805a\u96c6\u7d22\u5f15\uff08\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u4e0b\u9762\u4f1a\u8bb2\u5230\uff09\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u5728 InnoDB \u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u6570\u636e\u9875\u4e4b\u95f4\u901a\u8fc7\u53cc\u5411\u94fe\u8868\u8fde\u63a5\u4ee5\u53ca\u53f6\u5b50\u8282\u70b9\u4e2d\u6570\u636e\u4e4b\u95f4\u901a\u8fc7\u5355\u5411\u94fe\u8868\u8fde\u63a5\u7684\u65b9\u5f0f\u53ef\u4ee5\u627e\u5230\u8868\u4e2d\u6240\u6709\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>MyISAM \u4e2d\u7684 B+ \u6811\u7d22\u5f15\u5b9e\u73b0\u4e0e InnoDB \u4e2d\u7684\u7565\u6709\u4e0d\u540c\u3002\u5728 MyISAM \u4e2d\uff0cB+ \u6811\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u5e76\u4e0d\u5b58\u50a8\u6570\u636e\uff0c\u800c\u662f\u5b58\u50a8\u6570\u636e\u7684\u6587\u4ef6\u5730\u5740\u3002<\/p>\n\n\n\n<h3><a><\/a>\u805a\u96c6\u7d22\u5f15 VS&nbsp;\u975e\u805a\u96c6\u7d22\u5f15<\/h3>\n\n\n\n<p>\u5728\u4e0a\u8282\u4ecb\u7ecd B+ \u6811\u7d22\u5f15\u7684\u65f6\u5019\uff0c\u6211\u4eec\u63d0\u5230\u4e86\u56fe\u4e2d\u7684\u7d22\u5f15\u5176\u5b9e\u662f\u805a\u96c6\u7d22\u5f15\u7684\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u90a3\u4ec0\u4e48\u662f\u805a\u96c6\u7d22\u5f15\u5462\uff1f\u5728 MySQL \u4e2d\uff0cB+ \u6811\u7d22\u5f15\u6309\u7167\u5b58\u50a8\u65b9\u5f0f\u7684\u4e0d\u540c\u5206\u4e3a\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u7740\u91cd\u4ecb\u7ecd InnoDB \u4e2d\u7684\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\uff1a<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u2460\u805a\u96c6\u7d22\u5f15\uff08\u805a\u7c07\u7d22\u5f15\uff09\uff1a<\/strong>\u4ee5 InnoDB \u4f5c\u4e3a\u5b58\u50a8\u5f15\u64ce\u7684\u8868\uff0c\u8868\u4e2d\u7684\u6570\u636e\u90fd\u4f1a\u6709\u4e00\u4e2a\u4e3b\u952e\uff0c\u5373\u4f7f\u4f60\u4e0d\u521b\u5efa\u4e3b\u952e\uff0c\u7cfb\u7edf\u4e5f\u4f1a\u5e2e\u4f60\u521b\u5efa\u4e00\u4e2a\u9690\u5f0f\u7684\u4e3b\u952e\u3002<\/p>\n\n\n\n<p>\u8fd9\u662f\u56e0\u4e3a InnoDB \u662f\u628a\u6570\u636e\u5b58\u653e\u5728 B+ \u6811\u4e2d\u7684\uff0c\u800c B+&nbsp;\u6811\u7684\u952e\u503c\u5c31\u662f\u4e3b\u952e\uff0c\u5728 B+&nbsp;\u6811\u7684\u53f6\u5b50\u8282\u70b9\u4e2d\uff0c\u5b58\u50a8\u4e86\u8868\u4e2d\u6240\u6709\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u4ee5\u4e3b\u952e\u4f5c\u4e3a B+ \u6811\u7d22\u5f15\u7684\u952e\u503c\u800c\u6784\u5efa\u7684 B+&nbsp;\u6811\u7d22\u5f15\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3a\u805a\u96c6\u7d22\u5f15\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u2461\u975e\u805a\u96c6\u7d22\u5f15\uff08\u975e\u805a\u7c07\u7d22\u5f15\uff09\uff1a<\/strong>\u4ee5\u4e3b\u952e\u4ee5\u5916\u7684\u5217\u503c\u4f5c\u4e3a\u952e\u503c\u6784\u5efa\u7684 B+ \u6811\u7d22\u5f15\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3a\u975e\u805a\u96c6\u7d22\u5f15\u3002<\/p>\n\n\n\n<p>\u975e\u805a\u96c6\u7d22\u5f15\u4e0e\u805a\u96c6\u7d22\u5f15\u7684\u533a\u522b\u5728\u4e8e\u975e\u805a\u96c6\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u4e0d\u5b58\u50a8\u8868\u4e2d\u7684\u6570\u636e\uff0c\u800c\u662f\u5b58\u50a8\u8be5\u5217\u5bf9\u5e94\u7684\u4e3b\u952e\uff0c\u60f3\u8981\u67e5\u627e\u6570\u636e\u6211\u4eec\u8fd8\u9700\u8981\u6839\u636e\u4e3b\u952e\u518d\u53bb\u805a\u96c6\u7d22\u5f15\u4e2d\u8fdb\u884c\u67e5\u627e\uff0c\u8fd9\u4e2a\u518d\u6839\u636e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6570\u636e\u7684\u8fc7\u7a0b\uff0c\u6211\u4eec\u79f0\u4e3a\u56de\u8868\u3002<\/p>\n\n\n\n<p>\u660e\u767d\u4e86\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u7684\u5b9a\u4e49\uff0c\u6211\u4eec\u5e94\u8be5\u660e\u767d\u8fd9\u6837\u4e00\u53e5\u8bdd\uff1a\u6570\u636e\u5373\u7d22\u5f15\uff0c\u7d22\u5f15\u5373\u6570\u636e\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3>\u5229\u7528\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6570\u636e<\/h3>\n\n\n\n<p>\u524d\u9762\u6211\u4eec\u8bb2\u89e3 B+ \u6811\u7d22\u5f15\u7684\u65f6\u5019\u5e76\u6ca1\u6709\u53bb\u8bf4\u600e\u4e48\u5728 B+ \u6811\u4e2d\u8fdb\u884c\u6570\u636e\u7684\u67e5\u627e\uff0c\u4e3b\u8981\u5c31\u662f\u56e0\u4e3a\u8fd8\u6ca1\u6709\u5f15\u51fa\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u7684\u6982\u5ff5\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u8bb2\u89e3\u5982\u4f55\u901a\u8fc7\u805a\u96c6\u7d22\u5f15\u4ee5\u53ca\u975e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6570\u636e\u8868\u4e2d\u6570\u636e\u7684\u65b9\u5f0f\u4ecb\u7ecd\u4e00\u4e0b B+ \u6811\u7d22\u5f15\u67e5\u627e\u6570\u636e\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4><strong>\u5229\u7528\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6570\u636e<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"844\" height=\"563\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/69cde2db65b9913164297a2a741b0ede.jpg\" alt=\"\" class=\"wp-image-368\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/69cde2db65b9913164297a2a741b0ede.jpg 844w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/69cde2db65b9913164297a2a741b0ede-300x200.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/69cde2db65b9913164297a2a741b0ede-768x512.jpg 768w\" sizes=\"(max-width: 844px) 100vw, 844px\" \/><\/figure>\n\n\n\n<p>\u8fd8\u662f\u8fd9\u5f20 B+ \u6811\u7d22\u5f15\u56fe\uff0c\u73b0\u5728\u6211\u4eec\u5e94\u8be5\u77e5\u9053\u8fd9\u5c31\u662f\u805a\u96c6\u7d22\u5f15\uff0c\u8868\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u5728\u5176\u4e2d\u3002<\/p>\n\n\n\n<p>\u73b0\u5728\u5047\u8bbe\u6211\u4eec\u8981\u67e5\u627e id&gt;=18 \u5e76\u4e14 id&lt;40&nbsp;\u7684\u7528\u6237\u6570\u636e\u3002\u5bf9\u5e94\u7684 sql \u8bed\u53e5\u4e3a\uff1a<\/p>\n\n\n\n<p>MySQL<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from user where id >= 18 and id &lt; 40<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2d id \u4e3a\u4e3b\u952e\uff0c\u5177\u4f53\u7684\u67e5\u627e\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u2460\u4e00\u822c\u6839\u8282\u70b9\u90fd\u662f\u5e38\u9a7b\u5185\u5b58\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u9875 1 \u5df2\u7ecf\u5728\u5185\u5b58\u4e2d\u4e86\uff0c\u6b64\u65f6\u4e0d\u9700\u8981\u5230\u78c1\u76d8\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u76f4\u63a5\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u5230\u9875 1\uff0c\u8981\u67e5\u627e\u8fd9\u4e2a id&gt;=18 and id &lt;40&nbsp;\u6216\u8005\u8303\u56f4\u503c\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u627e\u5230 id=18 \u7684\u952e\u503c\u3002<\/p>\n\n\n\n<p>\u4ece\u9875 1 \u4e2d\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u952e\u503c 18\uff0c\u6b64\u65f6\u6211\u4eec\u9700\u8981\u6839\u636e\u6307\u9488 p2\uff0c\u5b9a\u4f4d\u5230\u9875 3\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u2461\u8981\u4ece\u9875 3 \u4e2d\u67e5\u627e\u6570\u636e\uff0c\u6211\u4eec\u5c31\u9700\u8981\u62ff\u7740 p2 \u6307\u9488\u53bb\u78c1\u76d8\u4e2d\u8fdb\u884c\u8bfb\u53d6\u9875 3\u3002<\/p>\n\n\n\n<p>\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u9875 3 \u540e\u5c06\u9875 3 \u653e\u5165\u5185\u5b58\u4e2d\uff0c\u7136\u540e\u8fdb\u884c\u67e5\u627e\uff0c\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u952e\u503c 18\uff0c\u7136\u540e\u518d\u62ff\u5230\u9875 3 \u4e2d\u7684\u6307\u9488 p1\uff0c\u5b9a\u4f4d\u5230\u9875 8\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u2462\u540c\u6837\u7684\u9875 8 \u9875\u4e0d\u5728\u5185\u5b58\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u518d\u53bb\u78c1\u76d8\u4e2d\u5c06\u9875 8 \u8bfb\u53d6\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n\n\n\n<p>\u5c06\u9875 8 \u8bfb\u53d6\u5230\u5185\u5b58\u4e2d\u540e\u3002\u56e0\u4e3a\u9875\u4e2d\u7684\u6570\u636e\u662f\u94fe\u8868\u8fdb\u884c\u8fde\u63a5\u7684\uff0c\u800c\u4e14\u952e\u503c\u662f\u6309\u7167\u987a\u5e8f\u5b58\u653e\u7684\uff0c\u6b64\u65f6\u53ef\u4ee5\u6839\u636e<a href=\"https:\/\/edu.csdn.net\/cloud\/pm_summit?utm_source=blogglc\" target=\"_blank\" rel=\"noreferrer noopener\">\u4e8c\u5206\u67e5\u627e<\/a>\u6cd5\u5b9a\u4f4d\u5230\u952e\u503c 18\u3002<\/p>\n\n\n\n<p>\u6b64\u65f6\u56e0\u4e3a\u5df2\u7ecf\u5230\u6570\u636e\u9875\u4e86\uff0c\u6b64\u65f6\u6211\u4eec\u5df2\u7ecf\u627e\u5230\u4e00\u6761\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u4e86\uff0c\u5c31\u662f\u952e\u503c 18 \u5bf9\u5e94\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u662f\u8303\u56f4\u67e5\u627e\uff0c\u800c\u4e14\u6b64\u65f6\u6240\u6709\u7684\u6570\u636e\u53c8\u90fd\u5b58\u5728\u53f6\u5b50\u8282\u70b9\uff0c\u5e76\u4e14\u662f\u6709\u5e8f\u6392\u5217\u7684\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u5bf9\u9875 8 \u4e2d\u7684\u952e\u503c\u4f9d\u6b21\u8fdb\u884c\u904d\u5386\u67e5\u627e\u5e76\u5339\u914d\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u4e00\u76f4\u627e\u5230\u952e\u503c\u4e3a 22 \u7684\u6570\u636e\uff0c\u7136\u540e\u9875 8 \u4e2d\u5c31\u6ca1\u6709\u6570\u636e\u4e86\uff0c\u6b64\u65f6\u6211\u4eec\u9700\u8981\u62ff\u7740\u9875 8 \u4e2d\u7684 p \u6307\u9488\u53bb\u8bfb\u53d6\u9875 9 \u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u2463\u56e0\u4e3a\u9875 9 \u4e0d\u5728\u5185\u5b58\u4e2d\uff0c\u5c31\u53c8\u4f1a\u52a0\u8f7d\u9875 9 \u5230\u5185\u5b58\u4e2d\uff0c\u5e76\u901a\u8fc7\u548c\u9875 8 \u4e2d\u4e00\u6837\u7684\u65b9\u5f0f\u8fdb\u884c\u6570\u636e\u7684\u67e5\u627e\uff0c\u76f4\u5230\u5c06\u9875 12 \u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff0c\u53d1\u73b0 41 \u5927\u4e8e 40\uff0c\u6b64\u65f6\u4e0d\u6ee1\u8db3\u6761\u4ef6\u3002\u90a3\u4e48\u67e5\u627e\u5230\u6b64\u7ec8\u6b62\u3002<\/p>\n\n\n\n<p>\u6700\u7ec8\u6211\u4eec\u627e\u5230\u6ee1\u8db3\u6761\u4ef6\u7684\u6240\u6709\u6570\u636e\uff0c\u603b\u5171 12 \u6761\u8bb0\u5f55\uff1a<\/p>\n\n\n\n<p>(18,kl), (19,kl), (22,hj), (24,io), (25,vg) , (29,jk), (31,jk) , (33,rt) , (34,ty) , (35,yu) , (37,rt) , (39,rt) \u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u4e0b\u9762\u770b\u4e0b\u5177\u4f53\u7684\u67e5\u627e\u6d41\u7a0b\u56fe<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"880\" height=\"572\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0f85b49b62a61e038b9e7e83c67fb51a.jpg\" alt=\"\" class=\"wp-image-370\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0f85b49b62a61e038b9e7e83c67fb51a.jpg 880w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0f85b49b62a61e038b9e7e83c67fb51a-300x195.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/0f85b49b62a61e038b9e7e83c67fb51a-768x499.jpg 768w\" sizes=\"(max-width: 880px) 100vw, 880px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u5229\u7528\u975e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6570\u636e<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"1024\" height=\"626\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5492ad726bce61375b6ed762a6de8db4.jpg\" alt=\"\" class=\"wp-image-371\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5492ad726bce61375b6ed762a6de8db4.jpg 1024w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5492ad726bce61375b6ed762a6de8db4-300x183.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/5492ad726bce61375b6ed762a6de8db4-768x470.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u8bfb\u8005\u770b\u5230\u8fd9\u5f20\u56fe\u7684\u65f6\u5019\u53ef\u80fd\u4f1a\u8499\uff0c\u8fd9\u662f\u5565\u4e1c\u897f\u554a\uff1f\u600e\u4e48\u90fd\u662f\u6570\u5b57\u3002\u5982\u679c\u6709\u8fd9\u79cd\u611f\u89c9\uff0c\u8bf7\u4ed4\u7ec6\u770b\u4e0b\u56fe\u4e2d\u7ea2\u5b57\u7684\u89e3\u91ca\u3002<\/p>\n\n\n\n<p>\u4ec0\u4e48\uff1f\u8fd8\u770b\u4e0d\u61c2\uff1f\u90a3\u6211\u518d\u6765\u89e3\u91ca\u4e0b\u5427\u3002\u9996\u5148\uff0c\u8fd9\u4e2a\u975e\u805a\u96c6\u7d22\u5f15\u8868\u793a\u7684\u662f\u7528\u6237\u5e78\u8fd0\u6570\u5b57\u7684\u7d22\u5f15\uff08\u4e3a\u4ec0\u4e48\u662f\u5e78\u8fd0\u6570\u5b57\uff1f\u4e00\u65f6\u5174\u8d77\u60f3\u8d77\u6765\u7684:-)\uff09\uff0c\u6b64\u65f6\u8868\u7ed3\u6784\u662f\u8fd9\u6837\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"682\" height=\"139\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/76342e85eea91c6bcd8bda8b9f00c284.png\" alt=\"\" class=\"wp-image-372\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/76342e85eea91c6bcd8bda8b9f00c284.png 682w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/76342e85eea91c6bcd8bda8b9f00c284-300x61.png 300w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/><\/figure>\n\n\n\n<p>\u5728\u53f6\u5b50\u8282\u70b9\u4e2d\uff0c\u4e0d\u518d\u5b58\u50a8\u6240\u6709\u7684\u6570\u636e\u4e86\uff0c\u5b58\u50a8\u7684\u662f\u952e\u503c\u548c\u4e3b\u952e\u3002\u5bf9\u4e8e\u53f6\u5b50\u8282\u70b9\u4e2d\u7684 x-y\uff0c\u6bd4\u5982 1-1\u3002\u5de6\u8fb9\u7684 1 \u8868\u793a\u7684\u662f\u7d22\u5f15\u7684\u952e\u503c\uff0c\u53f3\u8fb9\u7684 1 \u8868\u793a\u7684\u662f\u4e3b\u952e\u503c\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6211\u4eec\u8981\u627e\u5230\u5e78\u8fd0\u6570\u5b57\u4e3a 33 \u7684\u7528\u6237\u4fe1\u606f\uff0c\u5bf9\u5e94\u7684 sql \u8bed\u53e5\u4e3a\uff1a<\/p>\n\n\n\n<p>MySQL<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\t\r\nselect * from user where luckNum = 33<\/code><\/pre>\n\n\n\n<p>\u67e5\u627e\u7684\u6d41\u7a0b\u8ddf\u805a\u96c6\u7d22\u5f15\u4e00\u6837\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u3002\u6211\u4eec\u6700\u7ec8\u4f1a\u627e\u5230\u4e3b\u952e\u503c 47\uff0c\u627e\u5230\u4e3b\u952e\u540e\u6211\u4eec\u9700\u8981\u518d\u5230\u805a\u96c6\u7d22\u5f15\u4e2d\u67e5\u627e\u5177\u4f53\u5bf9\u5e94\u7684\u6570\u636e\u4fe1\u606f\uff0c\u6b64\u65f6\u53c8\u56de\u5230\u4e86\u805a\u96c6\u7d22\u5f15\u7684\u67e5\u627e\u6d41\u7a0b\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u770b\u4e0b\u5177\u4f53\u7684\u67e5\u627e\u6d41\u7a0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"599\" src=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/355c6de0736e32a353fdaba37efe26f5-1024x599.jpg\" alt=\"\" class=\"wp-image-373\" srcset=\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/355c6de0736e32a353fdaba37efe26f5-1024x599.jpg 1024w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/355c6de0736e32a353fdaba37efe26f5-300x175.jpg 300w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/355c6de0736e32a353fdaba37efe26f5-768x449.jpg 768w, http:\/\/blog.kijk.top\/wp-content\/uploads\/2024\/11\/355c6de0736e32a353fdaba37efe26f5.jpg 1028w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u5728 MyISAM \u4e2d\uff0c\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u90fd\u4f1a\u5b58\u50a8\u6570\u636e\u7684\u6587\u4ef6\u5730\u5740\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3>\u603b\u7ed3<\/h3>\n\n\n\n<p>\u672c\u7bc7\u6587\u7ae0\u4ece\u4e8c\u53c9\u67e5\u627e\u6811\uff0c\u8be6\u7ec6\u8bf4\u660e\u4e86\u4e3a\u4ec0\u4e48 MySQL \u7528 B+ \u6811\u4f5c\u4e3a\u6570\u636e\u7684\u7d22\u5f15\uff0c\u4ee5\u53ca\u5728 InnoDB \u4e2d\u6570\u636e\u5e93\u5982\u4f55\u901a\u8fc7 B+&nbsp;\u6811\u7d22\u5f15\u6765\u5b58\u50a8\u6570\u636e\u4ee5\u53ca\u67e5\u627e\u6570\u636e\u3002\u6211\u4eec\u4e00\u5b9a\u8981\u8bb0\u4f4f\u8fd9\u53e5\u8bdd\uff1a\u6570\u636e\u5373\u7d22\u5f15\uff0c\u7d22\u5f15\u5373\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\u4e8e\uff1ahttps:\/\/www.cnblogs.com\/zhuyeshen\/p\/12082839.html \u7d22 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/360"}],"collection":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=360"}],"version-history":[{"count":6,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/360\/revisions"}],"predecessor-version":[{"id":377,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/360\/revisions\/377"}],"wp:attachment":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=360"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}