{"id":174435,"date":"2024-11-07T21:50:20","date_gmt":"2024-11-07T13:50:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174435\/"},"modified":"2024-11-07T21:50:21","modified_gmt":"2024-11-07T13:50:21","slug":"%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8c%e9%ab%98%e6%95%88%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%9f-%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174435\/","title":{"rendered":"\u5982\u4f55\u9032\u884c\u9ad8\u6548\u5408\u4f75\u6392\u5e8f\u6578\u64da\u5eab\u64cd\u4f5c\uff1f (\u5408\u4f75\u6392\u5e8f\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8c%e9%ab%98%e6%95%88%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%9f-%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e6%95%b8%e6%93%9a-UkgColosHW\">\u5982\u4f55\u9032\u884c\u9ad8\u6548\u5408\u4f75\u6392\u5e8f\u6578\u64da\u5eab\u64cd\u4f5c\uff1f (\u5408\u4f75\u6392\u5e8f\u6578\u64da\u5eab)<\/h1>\n<p>\u5408\u4f75\u6392\u5e8f\uff08Merge Sort\uff09\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u7279\u5225\u9069\u5408\u7528\u65bc\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u3002\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0c\u5408\u4f75\u6392\u5e8f\u7684\u61c9\u7528\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u548c\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9ad8\u6548\u5730\u5be6\u73fe\u5408\u4f75\u6392\u5e8f\u64cd\u4f5c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-UkgColosHW\">\u5408\u4f75\u6392\u5e8f\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u5408\u4f75\u6392\u5e8f\u662f\u4e00\u7a2e\u5206\u6cbb\u6cd5\uff08Divide and Conquer\uff09\u7b97\u6cd5\uff0c\u5176\u57fa\u672c\u601d\u60f3\u662f\u5c07\u6578\u64da\u96c6\u5206\u6210\u5169\u500b\u5b50\u96c6\uff0c\u5c0d\u9019\u5169\u500b\u5b50\u96c6\u9032\u884c\u6392\u5e8f\uff0c\u7136\u5f8c\u5c07\u5df2\u6392\u5e8f\u7684\u5b50\u96c6\u5408\u4f75\u6210\u4e00\u500b\u5b8c\u6574\u7684\u6709\u5e8f\u6578\u64da\u96c6\u3002\u9019\u4e00\u904e\u7a0b\u53ef\u4ee5\u905e\u6b78\u9032\u884c\uff0c\u76f4\u5230\u6bcf\u500b\u5b50\u96c6\u53ea\u5305\u542b\u4e00\u500b\u5143\u7d20\u70ba\u6b62\u3002<\/p>\n<h3 id=\"%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f%e7%9a%84%e6%ad%a5%e9%a9%9f-UkgColosHW\">\u5408\u4f75\u6392\u5e8f\u7684\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5c07\u5f85\u6392\u5e8f\u7684\u6578\u64da\u96c6\u5206\u6210\u5169\u500b\u5b50\u96c6\u3002<\/li>\n<li>\u5c0d\u6bcf\u500b\u5b50\u96c6\u9032\u884c\u5408\u4f75\u6392\u5e8f\u3002<\/li>\n<li>\u5c07\u5df2\u6392\u5e8f\u7684\u5b50\u96c6\u5408\u4f75\u6210\u4e00\u500b\u5b8c\u6574\u7684\u6709\u5e8f\u6578\u64da\u96c6\u3002<\/li>\n<\/ol>\n<h2 id=\"%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%af%a6%e7%8f%be%e5%90%88%e4%bd%b5%e6%8e%92%e5%ba%8f-UkgColosHW\">\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u5408\u4f75\u6392\u5e8f<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u5408\u4f75\u6392\u5e8f\u901a\u5e38\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%88%86%e5%89%b2-UkgColosHW\">1. \u6578\u64da\u5206\u5272<\/h3>\n<p>\u9996\u5148\uff0c\u5c07\u6578\u64da\u96c6\u5206\u5272\u6210\u591a\u500b\u5c0f\u7684\u6578\u64da\u584a\u3002\u9019\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u8a9e\u53e5\u4f86\u5be6\u73fe\uff0c\u4f8b\u5982\u4f7f\u7528 SQL \u7684 <code>LIMIT<\/code> \u548c <code>OFFSET<\/code> \u5b50\u53e5\u4f86\u5206\u6279\u7372\u53d6\u6578\u64da\u3002<\/p>\n<pre><code>SELECT * FROM your_table ORDER BY your_column LIMIT 100 OFFSET 0;<\/code><\/pre>\n<h3 id=\"2-%e6%8e%92%e5%ba%8f%e5%ad%90%e9%9b%86-UkgColosHW\">2. \u6392\u5e8f\u5b50\u96c6<\/h3>\n<p>\u5c0d\u6bcf\u500b\u5c0f\u6578\u64da\u584a\u9032\u884c\u6392\u5e8f\u3002\u9019\u53ef\u4ee5\u4f7f\u7528\u6578\u64da\u5eab\u7684\u5167\u5efa\u6392\u5e8f\u529f\u80fd\u4f86\u5b8c\u6210\uff0c\u4f8b\u5982\u4f7f\u7528 <code>ORDER BY<\/code> \u5b50\u53e5\u3002<\/p>\n<pre><code>SELECT * FROM your_table ORDER BY your_column LIMIT 100 OFFSET 0;<\/code><\/pre>\n<h3 id=\"3-%e5%90%88%e4%bd%b5%e5%b7%b2%e6%8e%92%e5%ba%8f%e7%9a%84%e5%ad%90%e9%9b%86-UkgColosHW\">3. \u5408\u4f75\u5df2\u6392\u5e8f\u7684\u5b50\u96c6<\/h3>\n<p>\u6700\u5f8c\uff0c\u5c07\u5df2\u6392\u5e8f\u7684\u5b50\u96c6\u5408\u4f75\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>UNION<\/code> \u6216\u8005 <code>JOIN<\/code> \u4f86\u5be6\u73fe\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u6578\u64da\u7684\u7d50\u69cb\u548c\u9700\u6c42\u3002<\/p>\n<pre><code>SELECT * FROM sorted_table1\nUNION ALL\nSELECT * FROM sorted_table2;<\/code><\/pre>\n<h2 id=\"%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-UkgColosHW\">\u6027\u80fd\u512a\u5316<\/h2>\n<p>\u5728\u9032\u884c\u5408\u4f75\u6392\u5e8f\u7684\u904e\u7a0b\u4e2d\uff0c\u6027\u80fd\u512a\u5316\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u4ee5\u8003\u616e\u7684\u512a\u5316\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u7d22\u5f15\u4f7f\u7528\uff1a<\/strong>\u78ba\u4fdd\u5c0d\u9700\u8981\u6392\u5e8f\u7684\u5217\u5efa\u7acb\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u6279\u91cf\u8655\u7406\uff1a<\/strong>\u5c07\u6578\u64da\u5206\u6279\u8655\u7406\uff0c\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u7684\u6578\u64da\u91cf\u3002<\/li>\n<li><strong>\u5167\u5b58\u7ba1\u7406\uff1a<\/strong>\u6839\u64da\u6578\u64da\u96c6\u7684\u5927\u5c0f\u8abf\u6574\u5167\u5b58\u914d\u7f6e\uff0c\u4ee5\u907f\u514d\u56e0\u5167\u5b58\u4e0d\u8db3\u800c\u5c0e\u81f4\u7684\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 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href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u8655\u7406\uff0c\u9078\u64c7\u5408\u9069\u7684<a 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