{"id":151497,"date":"2024-11-01T17:36:35","date_gmt":"2024-11-01T09:36:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/151497\/"},"modified":"2024-11-01T17:36:37","modified_gmt":"2024-11-01T09:36:37","slug":"%e7%99%be%e8%90%ac%e6%95%b8%e6%93%9a%e4%b8%8b%e5%b9%be%e7%a8%aesql%e6%80%a7%e8%83%bd%e6%b8%ac%e8%a9%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/151497\/","title":{"rendered":"\u767e\u842c\u6578\u64da\u4e0b\u5e7e\u7a2eSQL\u6027\u80fd\u6e2c\u8a66"},"content":{"rendered":"<h1 id=\"%e7%99%be%e8%90%ac%e6%95%b8%e6%93%9a%e4%b8%8b%e5%b9%be%e7%a8%aesql%e6%80%a7%e8%83%bd%e6%b8%ac%e8%a9%a6-zjduQpcbhl\">\u767e\u842c\u6578\u64da\u4e0b\u5e7e\u7a2eSQL\u6027\u80fd\u6e2c\u8a66<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u7279\u5225\u662f\u7576\u6578\u64da\u9054\u5230\u767e\u842c\u7d1a\u5225\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u6e2c\u8a66\u548c\u512a\u5316SQL\u67e5\u8a62\u7684\u6027\u80fd\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u5e38\u898b\u7684SQL\u6027\u80fd\u6e2c\u8a66\u65b9\u6cd5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728\u5927\u6578\u64da\u74b0\u5883\u4e2d\u9032\u884c\u6027\u80fd\u512a\u5316\u3002<\/p>\n<h2 id=\"1-%e5%9f%ba%e6%ba%96%e6%b8%ac%e8%a9%a6%ef%bc%88benchmarking%ef%bc%89-zjduQpcbhl\">1. \u57fa\u6e96\u6e2c\u8a66\uff08Benchmarking\uff09<\/h2>\n<p>\u57fa\u6e96\u6e2c\u8a66\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6027\u80fd\u6e2c\u8a66\u65b9\u6cd5\uff0c\u65e8\u5728\u8a55\u4f30\u6578\u64da\u5eab\u5728\u7279\u5b9a\u689d\u4ef6\u4e0b\u7684\u6027\u80fd\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u57f7\u884c\u4e00\u7d44\u9810\u5b9a\u7fa9\u7684\u67e5\u8a62\uff0c\u4e26\u6e2c\u91cf\u5176\u57f7\u884c\u6642\u9593\u548c\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u3002\u57fa\u6e96\u6e2c\u8a66\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u4e86\u89e3\u5728\u4e0d\u540c\u8ca0\u8f09\u4e0b\u6578\u64da\u5eab\u7684\u8868\u73fe\u3002<\/p>\n<pre><code>-- \u793a\u4f8b\uff1a\u57fa\u6e96\u6e2c\u8a66\u67e5\u8a62\nSELECT COUNT(*) FROM orders WHERE order_date &gt; '2023-01-01';\n<\/code><\/pre>\n<p>\u5728\u9032\u884c\u57fa\u6e96\u6e2c\u8a66\u6642\uff0c\u61c9\u78ba\u4fdd\u6e2c\u8a66\u74b0\u5883\u8207\u751f\u7522\u74b0\u5883\u76f8\u4f3c\uff0c\u4ee5\u7372\u5f97\u6e96\u78ba\u7684\u7d50\u679c\u3002\u6b64\u5916\uff0c\u6e2c\u8a66\u61c9\u5728\u4e0d\u540c\u7684\u6642\u9593\u6bb5\u9032\u884c\uff0c\u4ee5\u8003\u616e\u5230\u7cfb\u7d71\u8ca0\u8f09\u7684\u8b8a\u5316\u3002<\/p>\n<h2 id=\"2-%e8%b2%a0%e8%bc%89%e6%b8%ac%e8%a9%a6%ef%bc%88load-testing%ef%bc%89-zjduQpcbhl\">2. \u8ca0\u8f09\u6e2c\u8a66\uff08Load Testing\uff09<\/h2>\n<p>\u8ca0\u8f09\u6e2c\u8a66\u65e8\u5728\u6a21\u64ec\u591a\u7528\u6236\u540c\u6642\u8a2a\u554f\u6578\u64da\u5eab\u7684\u60c5\u6cc1\uff0c\u4ee5\u8a55\u4f30\u7cfb\u7d71\u5728\u9ad8\u8ca0\u8f09\u4e0b\u7684\u6027\u80fd\u3002\u9019\u7a2e\u6e2c\u8a66\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6f5b\u5728\u7684\u74f6\u9838\uff0c\u4e26\u78ba\u4fdd\u7cfb\u7d71\u80fd\u5920\u8655\u7406\u9810\u671f\u7684\u7528\u6236\u6578\u91cf\u3002<\/p>\n<p>\u5728\u9032\u884c\u8ca0\u8f09\u6e2c\u8a66\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u5982 JMeter \u6216 LoadRunner \u4f86\u6a21\u64ec\u591a\u500b\u7528\u6236\u7684\u8acb\u6c42\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u8ca0\u8f09\u6e2c\u8a66\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u6a21\u64ec\u591a\u500b\u7528\u6236\u67e5\u8a62\nSELECT * FROM products WHERE category_id = 1;\n<\/code><\/pre>\n<p>\u901a\u904e\u5206\u6790\u8ca0\u8f09\u6e2c\u8a66\u7684\u7d50\u679c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8abf\u6574\u6578\u64da\u5eab\u914d\u7f6e\u6216\u67e5\u8a62\u7d50\u69cb\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"3-%e5%a3%93%e5%8a%9b%e6%b8%ac%e8%a9%a6%ef%bc%88stress-testing%ef%bc%89-zjduQpcbhl\">3. \u58d3\u529b\u6e2c\u8a66\uff08Stress Testing\uff09<\/h2>\n<p>\u58d3\u529b\u6e2c\u8a66\u7684\u76ee\u7684\u662f\u5c07\u7cfb\u7d71\u63a8\u5411\u5176\u6975\u9650\uff0c\u4ee5\u78ba\u5b9a\u5176\u6700\u5927\u627f\u8f09\u80fd\u529b\u3002\u9019\u7a2e\u6e2c\u8a66\u901a\u5e38\u6703\u8d85\u904e\u6b63\u5e38\u7684\u64cd\u4f5c\u8ca0\u8f09\uff0c\u4e26\u89c0\u5bdf\u7cfb\u7d71\u5728\u6975\u7aef\u60c5\u6cc1\u4e0b\u7684\u884c\u70ba\u3002<\/p>\n<p>\u58d3\u529b\u6e2c\u8a66\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u7cfb\u7d71\u7684\u5f31\u9ede\uff0c\u4f8b\u5982\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u904e\u9577\u6216\u8cc7\u6e90\u4f7f\u7528\u904e\u9ad8\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u58d3\u529b\u6e2c\u8a66\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5927\u91cf\u6578\u64da\u67e5\u8a62\nSELECT * FROM orders WHERE customer_id IN (SELECT customer_id FROM customers LIMIT 10000);\n<\/code><\/pre>\n<h2 id=\"4-%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90%ef%bc%88performance-profiling%ef%bc%89-zjduQpcbhl\">4. \u6027\u80fd\u5206\u6790\uff08Performance Profiling\uff09<\/h2>\n<p>\u6027\u80fd\u5206\u6790\u662f\u4e00\u7a2e\u6df1\u5165\u4e86\u89e3SQL\u67e5\u8a62\u6027\u80fd\u7684\u6280\u8853\u3002\u901a\u904e\u4f7f\u7528\u6578\u64da\u5eab\u63d0\u4f9b\u7684\u5206\u6790\u5de5\u5177\uff08\u5982 EXPLAIN \u6216 ANALYZE\uff09\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7372\u5f97\u6709\u95dc\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5f9e\u800c\u8b58\u5225\u6f5b\u5728\u7684\u6027\u80fd\u554f\u984c\u3002<\/p>\n<pre><code>-- \u4f7f\u7528 EXPLAIN \u5206\u6790\u67e5\u8a62\nEXPLAIN SELECT * FROM orders WHERE order_date &gt; '2023-01-01';\n<\/code><\/pre>\n<p>\u6027\u80fd\u5206\u6790\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u512a\u5316\u67e5\u8a62\uff0c\u901a\u904e\u8abf\u6574\u7d22\u5f15\u6216\u91cd\u5beb\u67e5\u8a62\u4f86\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e8%88%87%e8%aa%bf%e5%84%aa%ef%bc%88monitoring-and-tuning%ef%bc%89-zjduQpcbhl\">5. \u76e3\u63a7\u8207\u8abf\u512a\uff08Monitoring and Tuning\uff09<\/h2>\n<p>\u6301\u7e8c\u7684\u76e3\u63a7\u548c\u8abf\u512a\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u4f7f\u7528\u76e3\u63a7\u5de5\u5177\uff08\u5982 Prometheus \u6216 Grafana\uff09\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5be6\u6642\u8ddf\u8e2a\u6578\u64da\u5eab\u7684\u6027\u80fd\u6307\u6a19\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002<\/p>\n<p>\u5b9a\u671f\u6aa2\u67e5\u67e5\u8a62\u6027\u80fd\u548c\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u53ef\u4ee5\u5e6b\u52a9\u53ca\u6642\u767c\u73fe\u554f\u984c\u4e26\u9032\u884c\u512a\u5316\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zjduQpcbhl\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u767e\u842c\u6578\u64da\u7684\u74b0\u5883\u4e0b\uff0c\u9032\u884cSQL\u6027\u80fd\u6e2c\u8a66\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u9ad8\u6548\u904b\u884c\u7684\u5fc5\u8981\u6b65\u9a5f\u3002\u901a\u904e\u57fa\u6e96\u6e2c\u8a66\u3001\u8ca0\u8f09\u6e2c\u8a66\u3001\u58d3\u529b\u6e2c\u8a66\u3001\u6027\u80fd\u5206\u6790\u4ee5\u53ca\u6301\u7e8c\u7684\u76e3\u63a7\u8207\u8abf\u512a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u8b58\u5225\u548c\u89e3\u6c7a\u6027\u80fd\u74f6\u9838\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u7cfb\u7d71\u5728\u9ad8\u8ca0\u8f09\u4e0b\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u767e\u842c\u6578\u64da\u4e0b\u7684\u5e7e\u7a2eSQL\u6027\u80fd\u6e2c\u8a66\u65b9\u6cd5\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\uff0c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u8655\u7406\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-151497","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151497","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=151497"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151497\/revisions"}],"predecessor-version":[{"id":151498,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151497\/revisions\/151498"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=151497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=151497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=151497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}