{"id":173441,"date":"2024-11-07T18:03:21","date_gmt":"2024-11-07T10:03:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173441\/"},"modified":"2024-11-07T18:03:22","modified_gmt":"2024-11-07T10:03:22","slug":"%e5%a6%82%e4%bd%95%e4%bc%b0%e8%a8%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e7%9a%84%e8%80%97%e6%99%82%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e8%80%97%e6%99%82%e4%bc%b0%e8%a8%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173441\/","title":{"rendered":"\u5982\u4f55\u4f30\u8a08\u6578\u64da\u5eab\u67e5\u8a62\u7684\u8017\u6642\uff1f (\u6578\u64da\u5eab\u67e5\u8a62\u8017\u6642\u4f30\u8a08)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bc%b0%e8%a8%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e7%9a%84%e8%80%97%e6%99%82%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e8%80%97%e6%99%82%e4%bc%b0%e8%a8%88-cwXYIKhsAP\">\u5982\u4f55\u4f30\u8a08\u6578\u64da\u5eab\u67e5\u8a62\u7684\u8017\u6642\uff1f 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id=\"%e6%9f%a5%e8%a9%a2%e8%80%97%e6%99%82%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-cwXYIKhsAP\">\u67e5\u8a62\u8017\u6642\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u67e5\u8a62\u7684\u8017\u6642\u901a\u5e38\u6307\u7684\u662f\u5f9e\u767c\u51fa\u67e5\u8a62\u5230\u7372\u5f97\u7d50\u679c\u6240\u9700\u7684\u6642\u9593\u3002\u9019\u500b\u904e\u7a0b\u53ef\u4ee5\u5206\u70ba\u5e7e\u500b\u968e\u6bb5\uff0c\u5305\u62ec\u89e3\u6790\u3001\u512a\u5316\u3001\u57f7\u884c\u548c\u8fd4\u56de\u7d50\u679c\u3002\u6bcf\u500b\u968e\u6bb5\u90fd\u53ef\u80fd\u53d7\u5230\u591a\u7a2e\u56e0\u7d20\u7684\u5f71\u97ff\uff0c\u4f8b\u5982\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u3001\u7d22\u5f15\u7684\u4f7f\u7528\u3001\u6578\u64da\u91cf\u7684\u5927\u5c0f\u4ee5\u53ca\u7cfb\u7d71\u7684\u786c\u9ad4\u914d\u7f6e\u7b49\u3002<\/p>\n<h2 id=\"%e5%bd%b1%e9%9f%bf%e6%9f%a5%e8%a9%a2%e8%80%97%e6%99%82%e7%9a%84%e5%9b%a0%e7%b4%a0-cwXYIKhsAP\">\u5f71\u97ff\u67e5\u8a62\u8017\u6642\u7684\u56e0\u7d20<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5eab\u8a2d\u8a08\uff1a<\/strong>\u826f\u597d\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u6b63\u898f\u5316\u548c\u53cd\u6b63\u898f\u5316\u7684\u9078\u64c7\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u8907\u96dc\u6027\u548c\u57f7\u884c\u6548\u7387\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff1a<\/strong>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u7684\u95dc\u9375\u3002\u9069\u7576\u7684\u7d22\u5f15\u53ef\u4ee5\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u6383\u63cf\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u964d\u4f4e\u8017\u6642\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a9e\u53e5\uff1a<\/strong>\u67e5\u8a62\u7684\u5beb\u6cd5\u4e5f\u6703\u5f71\u97ff\u6027\u80fd\u3002\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684\u5b50\u67e5\u8a62\u6216\u904e\u65bc\u8907\u96dc\u7684\u806f\u63a5\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u8b8a\u6162\u3002<\/li>\n<li><strong>\u6578\u64da\u91cf\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u67e5\u8a62\u7684\u8017\u6642\u901a\u5e38\u6703\u589e\u52a0\u3002\u9019\u662f\u56e0\u70ba\u7cfb\u7d71\u9700\u8981\u8655\u7406\u66f4\u591a\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u786c\u9ad4\u914d\u7f6e\uff1a<\/strong>\u4f3a\u670d\u5668\u7684CPU\u3001\u5167\u5b58\u548c\u5b58\u5132\u901f\u5ea6\u7b49\u786c\u9ad4\u914d\u7f6e\u4e5f\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bc%b0%e8%a8%88%e6%9f%a5%e8%a9%a2%e8%80%97%e6%99%82-cwXYIKhsAP\">\u5982\u4f55\u4f30\u8a08\u67e5\u8a62\u8017\u6642<\/h2>\n<p>\u4f30\u8a08\u67e5\u8a62\u8017\u6642\u7684\u65b9\u6cd5\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6280\u8853\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83-cwXYIKhsAP\">1. \u4f7f\u7528\u6578\u64da\u5eab\u7684\u57f7\u884c\u8a08\u5283<\/h3>\n<p>\u5927\u591a\u6578\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u90fd\u63d0\u4f9b\u4e86\u57f7\u884c\u8a08\u5283\u7684\u529f\u80fd\u3002\u57f7\u884c\u8a08\u5283\u986f\u793a\u4e86\u6578\u64da\u5eab\u5982\u4f55\u57f7\u884c\u67e5\u8a62\uff0c\u5305\u62ec\u4f7f\u7528\u7684\u7d22\u5f15\u3001\u806f\u63a5\u7684\u9806\u5e8f\u7b49\u3002\u901a\u904e\u5206\u6790\u57f7\u884c\u8a08\u5283\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4e86\u89e3\u67e5\u8a62\u7684\u6f5b\u5728\u74f6\u9838\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM users WHERE age &gt; 30;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%80%a7%e8%83%bd%e7%9b%a3%e6%8e%a7%e5%b7%a5%e5%85%b7-cwXYIKhsAP\">2. \u4f7f\u7528\u6027\u80fd\u76e3\u63a7\u5de5\u5177<\/h3>\n<p>\u8a31\u591a\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u6027\u80fd\u76e3\u63a7\u5de5\u5177\uff0c\u53ef\u4ee5\u5be6\u6642\u8ddf\u8e2a\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3002\u4f8b\u5982\uff0cMySQL\u7684\u6162\u67e5\u8a62\u65e5\u8a8c\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u8017\u6642\u8f03\u9577\u7684\u67e5\u8a62\u3002<\/p>\n<h3 id=\"3-%e6%b8%ac%e8%a9%a6%e5%92%8c%e5%9f%ba%e6%ba%96%e6%b8%ac%e8%a9%a6-cwXYIKhsAP\">3. \u6e2c\u8a66\u548c\u57fa\u6e96\u6e2c\u8a66<\/h3>\n<p>\u901a\u904e\u5728\u4e0d\u540c\u7684\u74b0\u5883\u4e2d\u57f7\u884c\u67e5\u8a62\u4e26\u6e2c\u91cf\u5176\u8017\u6642\uff0c\u53ef\u4ee5\u7372\u5f97\u66f4\u6e96\u78ba\u7684\u4f30\u8a08\u3002\u57fa\u6e96\u6e2c\u8a66\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u4e86\u89e3\u5728\u4e0d\u540c\u8ca0\u8f09\u4e0b\u67e5\u8a62\u7684\u6027\u80fd\u3002<\/p>\n<pre><code>SELECT COUNT(*) FROM orders WHERE order_date &gt; '2023-01-01';<\/code><\/pre>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e4%bb%a5%e9%99%8d%e4%bd%8e%e8%80%97%e6%99%82-cwXYIKhsAP\">\u512a\u5316\u67e5\u8a62\u4ee5\u964d\u4f4e\u8017\u6642<\/h2>\n<p>\u5728\u4e86\u89e3\u4e86\u67e5\u8a62\u7684\u8017\u6642\u5f8c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4e00\u4e9b\u63aa\u65bd\u4f86\u512a\u5316\u67e5\u8a62\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u3002<\/li>\n<li>\u7c21\u5316\u67e5\u8a62\u8a9e\u53e5\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\u548c\u806f\u63a5\u3002<\/li>\n<li>\u5b9a\u671f\u6e05\u7406\u548c\u7dad\u8b77\u6578\u64da\u5eab\uff0c\u4ee5\u4fdd\u6301\u5176\u6027\u80fd\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u7de9\u5b58\u6280\u8853\u4f86\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u76f4\u63a5\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cwXYIKhsAP\">\u7e3d\u7d50<\/h2>\n<p>\u4f30\u8a08\u6578\u64da\u5eab\u67e5\u8a62\u7684\u8017\u6642\u662f\u4e00\u500b\u591a\u65b9\u9762\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u6578\u64da\u5eab\u8a2d\u8a08\u3001\u67e5\u8a62\u8a9e\u53e5\u3001\u786c\u9ad4\u914d\u7f6e\u7b49\u591a\u7a2e\u56e0\u7d20\u3002\u901a\u904e\u4f7f\u7528\u57f7\u884c\u8a08\u5283\u3001\u6027\u80fd\u76e3\u63a7\u5de5\u5177\u4ee5\u53ca\u57fa\u6e96\u6e2c\u8a66\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u5728\u9ad8\u8ca0\u8f09\u4e0b\u4ecd\u80fd\u4fdd\u6301\u826f\u597d\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f30\u8a08\u6578\u64da\u5eab\u67e5\u8a62\u7684\u8017\u6642\uff0c\u638c\u63e1\u6027\u80fd\u512a\u5316\u6280\u5de7\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-173441","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=173441"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173441\/revisions"}],"predecessor-version":[{"id":173442,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173441\/revisions\/173442"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}