{"id":76774,"date":"2024-10-16T09:49:19","date_gmt":"2024-10-16T01:49:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76774\/"},"modified":"2024-10-16T09:49:19","modified_gmt":"2024-10-16T01:49:19","slug":"mysql%e7%b4%a2%e5%bc%95%e8%83%8c%e5%be%8c%e7%9a%84%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b%e5%8f%8a%e7%ae%97%e6%b3%95%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76774\/","title":{"rendered":"MySQL\u7d22\u5f15\u80cc\u5f8c\u7684\u6578\u64da\u7d50\u69cb\u53ca\u7b97\u6cd5\u539f\u7406"},"content":{"rendered":"<h1 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id=\"b-tree%e7%b4%a2%e5%bc%95%e7%9a%84%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-zmaAuyJLGE\">B-Tree\u7d22\u5f15\u7684\u6578\u64da\u7d50\u69cb<\/h2>\n<p>B-Tree\u7d22\u5f15\u662f\u4e00\u7a2e\u81ea\u5e73\u8861\u7684\u6a39\u5f62\u6578\u64da\u7d50\u69cb\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u9ede\uff1a<\/p>\n<ul>\n<li>\u6bcf\u500b\u7bc0\u9ede\u53ef\u4ee5\u5305\u542b\u591a\u500b\u9375\u503c\u548c\u6307\u5411\u5b50\u7bc0\u9ede\u7684\u6307\u91dd\u3002<\/li>\n<li>\u6240\u6709\u8449\u5b50\u7bc0\u9ede\u4f4d\u65bc\u540c\u4e00\u5c64\uff0c\u78ba\u4fdd\u67e5\u8a62\u7684\u6642\u9593\u8907\u96dc\u5ea6\u70baO(log n)\u3002<\/li>\n<li>\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u6703\u81ea\u52d5\u8abf\u6574\u6a39\u7684\u7d50\u69cb\uff0c\u4ee5\u4fdd\u6301\u5e73\u8861\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662fB-Tree\u7684\u57fa\u672c\u7d50\u69cb\u793a\u610f\uff1a<\/p>\n<pre>\n          [20]\n         \/    \n      [10]    [30]\n      \/        \/  \n   [5]  [15] [25] [35]\n<\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e7%ae%97%e6%b3%95%e5%8e%9f%e7%90%86-zmaAuyJLGE\">\u7d22\u5f15\u7684\u7b97\u6cd5\u539f\u7406<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u7d22\u5f15\u7684\u67e5\u8a62\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u7576\u7528\u6236\u767c\u51fa\u67e5\u8a62\u8acb\u6c42\u6642\uff0cMySQL\u9996\u5148\u6aa2\u67e5\u662f\u5426\u5b58\u5728\u76f8\u95dc\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u5982\u679c\u5b58\u5728\uff0cMySQL\u5c07\u4f7f\u7528\u7d22\u5f15\u4f86\u5b9a\u4f4d\u6578\u64da\uff0c\u800c\u4e0d\u662f\u5168\u8868\u6383\u63cf\u3002<\/li>\n<li>\u67e5\u8a62\u7d50\u679c\u5c07\u6839\u64da\u7d22\u5f15\u4e2d\u7684\u6307\u91dd\u76f4\u63a5\u8a2a\u554f\u6578\u64da\u9801\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ol>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u5305\u542b\u201cid\u201d\u548c\u201cname\u201d\u5169\u500b\u5b57\u6bb5\u3002\u5982\u679c\u5c0d\u201cname\u201d\u5b57\u6bb5\u5efa\u7acb\u4e86B-Tree\u7d22\u5f15\uff0c\u67e5\u8a62\u201cSELECT 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id=\"%e7%b8%bd%e7%b5%90-zmaAuyJLGE\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7d22\u5f15\u80cc\u5f8c\u7684\u6578\u64da\u7d50\u69cb\u548c\u7b97\u6cd5\u539f\u7406\u662f\u5176\u9ad8\u6548\u67e5\u8a62\u7684\u57fa\u790e\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u901f\u5ea6\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u5e73\u8861\u7d22\u5f15\u7684\u4f7f\u7528\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6027\u80fd\u640d\u5931\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> 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