{"id":5407,"date":"2024-11-14T11:15:52","date_gmt":"2024-11-14T03:15:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5407\/"},"modified":"2024-11-14T11:15:52","modified_gmt":"2024-11-14T03:15:52","slug":"mysql%e6%89%a7%e8%a1%8c%e8%ae%a1%e5%88%92%e6%80%8e%e4%b9%88%e5%81%9a","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5407\/","title":{"rendered":"mysql\u6267\u884c\u8ba1\u5212\u600e\u4e48\u505a"},"content":{"rendered":"<blockquote><p>\n  \u5236\u5b9a mysql \u6267\u884c\u8ba1\u5212\u9700\u8981\u9075\u5faa\u4e94\u4e2a\u6b65\u9aa4\uff1a\u786e\u5b9a\u67e5\u8be2\u76ee\u6807\u5206\u6790\u67e5\u8be2\u8bed\u53e5\u67e5\u770b\u6267\u884c\u8ba1\u5212\u4f18\u5316\u67e5\u8be2\u76d1\u89c6\u548c\u8c03\u6574\u6839\u636e\u6267\u884c\u8ba1\u5212\uff0c\u53ef\u4ee5\u4f18\u5316\u67e5\u8be2\uff0c\u4f8b\u5982\u521b\u5efa\u7d22\u5f15\u3001\u91cd\u5199\u67e5\u8be2\u3001\u6d88\u9664\u5197\u4f59\u6216\u4f18\u5316\u8868\u7ed3\u6784\u3002\u4f18\u5316\u6267\u884c\u8ba1\u5212\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u76d1\u89c6\u548c\u8c03\u6574\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/28\/2024052811212398726.jpg\" class=\"aligncenter\" title=\"mysql\u6267\u884c\u8ba1\u5212\u600e\u4e48\u505a\u63d2\u56fe\" alt=\"mysql\u6267\u884c\u8ba1\u5212\u600e\u4e48\u505a\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5236\u5b9a MySQL \u6267\u884c\u8ba1\u5212<\/strong><\/p>\n<p>\u8981\u5236\u5b9a MySQL \u6267\u884c\u8ba1\u5212\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u786e\u5b9a\u67e5\u8be2\u76ee\u6807<\/strong><\/p>\n<p>\u660e\u786e\u67e5\u8be2\u7684\u76ee\u7684\uff0c\u662f\u83b7\u53d6\u6570\u636e\u3001\u66f4\u65b0\u6570\u636e\u8fd8\u662f\u5220\u9664\u6570\u636e\u3002\u660e\u786e\u76ee\u6807\u6709\u52a9\u4e8e\u9009\u62e9\u5408\u9002\u7684\u67e5\u8be2\u7c7b\u578b\u548c\u7d22\u5f15\u3002<\/p>\n<p><strong>2. \u5206\u6790\u67e5\u8be2\u8bed\u53e5<\/strong><\/p>\n<p>\u5bf9\u67e5\u8be2\u8bed\u53e5\u8fdb\u884c\u5206\u6790\uff0c\u627e\u51fa\u53ef\u80fd\u5f71\u54cd\u6027\u80fd\u7684\u56e0\u7d20\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u8868\u8fde\u63a5<\/li>\n<li>\u590d\u6742\u6761\u4ef6<\/li>\n<li>\u6392\u5e8f\u548c\u5206\u7ec4<\/li>\n<li>\u5b50\u67e5\u8be2<\/li>\n<\/ul>\n<p><strong>3. \u67e5\u770b\u6267\u884c\u8ba1\u5212<\/strong><\/p>\n<p>\u4f7f\u7528 EXPLAIN \u547d\u4ee4\u67e5\u770b\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\uff0c\u4e86\u89e3 MySQL \u5982\u4f55\u6267\u884c\u67e5\u8be2\uff0c\u4ee5\u53ca\u67e5\u8be2\u4e2d\u6bcf\u4e2a\u6b65\u9aa4\u7684\u6210\u672c\u3002<\/p>\n<p><strong>4. \u4f18\u5316\u67e5\u8be2<\/strong><\/p>\n<p>\u6839\u636e\u6267\u884c\u8ba1\u5212\uff0c\u8bc6\u522b\u53ef\u4ee5\u4f18\u5316\u7684\u5730\u65b9\uff0c\u4f8b\u5982\uff1a<\/p>\n<p><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong> \u4e3a\u7ecf\u5e38\u67e5\u8be2\u7684\u5217\u521b\u5efa\u7d22\u5f15\uff0c\u52a0\u5feb\u6570\u636e\u68c0\u7d22\u901f\u5ea6\u3002<br \/><strong>\u91cd\u5199\u67e5\u8be2\uff1a<\/strong> \u5bf9\u4e8e\u590d\u6742\u7684\u67e5\u8be2\uff0c\u5c1d\u8bd5\u91cd\u5199\u6210\u66f4\u7b80\u5355\u7684\u5f62\u5f0f\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 JOIN \u4ee3\u66ff\u5b50\u67e5\u8be2\u3002<br \/><strong>\u6d88\u9664\u5197\u4f59\uff1a<\/strong> \u907f\u514d\u67e5\u8be2\u4e2d\u5305\u542b\u91cd\u590d\u6216\u4e0d\u5fc5\u8981\u7684\u6761\u4ef6\u3002<br \/><strong>\u4f18\u5316\u8868\u7ed3\u6784\uff1a<\/strong> \u8003\u8651\u8c03\u6574\u8868\u7ed3\u6784\uff0c\u4f8b\u5982\uff0c\u51cf\u5c11\u8868\u7684\u5b57\u6bb5\u6570\u91cf\u6216\u66f4\u6539\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<p><strong>5. \u76d1\u89c6\u548c\u8c03\u6574<\/strong><\/p>\n<p>\u5b9a\u671f\u76d1\u89c6\u67e5\u8be2\u6027\u80fd\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u8c03\u6574\u3002\u968f\u7740\u6570\u636e\u548c\u67e5\u8be2\u7684\u66f4\u6539\uff0c\u6267\u884c\u8ba1\u5212\u4e5f\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u4f8b\u5982 pt-query-digest \u6216 Percona Toolkit\uff0c\u83b7\u5f97\u66f4\u6df1\u5165\u7684\u89c1\u89e3\u3002<\/li>\n<li>\u8003\u8651\u4f7f\u7528 MySQL \u4f18\u5316\u5668\u5efa\u8bae\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u751f\u6210\u4f18\u5316\u8fc7\u7684\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<li>\u4f18\u5316\u6267\u884c\u8ba1\u5212\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u76d1\u89c6\u548c\u8c03\u6574\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6267\u884c\u8ba1\u5212\u600e\u4e48\u505a\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5236\u5b9a mysql \u6267\u884c\u8ba1\u5212\u9700\u8981\u9075\u5faa\u4e94\u4e2a\u6b65\u9aa4\uff1a\u786e\u5b9a\u67e5\u8be2\u76ee\u6807\u5206\u6790\u67e5\u8be2\u8bed\u53e5\u67e5\u770b\u6267\u884c\u8ba1\u5212\u4f18\u5316\u67e5\u8be2\u76d1\u89c6\u548c\u8c03\u6574\u6839\u636e\u6267\u884c\u8ba1\u5212\uff0c\u53ef\u4ee5\u4f18\u5316\u67e5\u8be2\uff0c\u4f8b\u5982\u521b\u5efa\u7d22\u5f15\u3001\u91cd\u5199\u67e5\u8be2\u3001\u6d88\u9664\u5197\u4f59\u6216\u4f18\u5316\u8868\u7ed3\u6784\u3002\u4f18\u5316\u6267\u884c\u8ba1\u5212\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u76d1\u89c6\u548c\u8c03\u6574\u3002 \u5982\u4f55\u5236\u5b9a MySQL \u6267\u884c\u8ba1\u5212 \u8981\u5236\u5b9a MySQL \u6267\u884c\u8ba1\u5212\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u786e\u5b9a\u67e5\u8be2\u76ee\u6807 \u660e\u786e\u67e5\u8be2\u7684\u76ee\u7684\uff0c\u662f\u83b7\u53d6\u6570\u636e\u3001\u66f4\u65b0\u6570\u636e\u8fd8\u662f\u5220\u9664\u6570\u636e\u3002\u660e\u786e\u76ee\u6807\u6709\u52a9\u4e8e\u9009\u62e9\u5408\u9002\u7684\u67e5\u8be2\u7c7b\u578b\u548c\u7d22\u5f15\u3002 2. \u5206\u6790\u67e5\u8be2\u8bed\u53e5 \u5bf9\u67e5\u8be2\u8bed\u53e5\u8fdb\u884c\u5206\u6790\uff0c\u627e\u51fa\u53ef\u80fd\u5f71\u54cd\u6027\u80fd\u7684\u56e0\u7d20\uff0c\u4f8b\u5982\uff1a \u8868\u8fde\u63a5 \u590d\u6742\u6761\u4ef6 \u6392\u5e8f\u548c\u5206\u7ec4 \u5b50\u67e5\u8be2 3. \u67e5\u770b\u6267\u884c\u8ba1\u5212 \u4f7f\u7528 EXPLAIN \u547d\u4ee4\u67e5\u770b\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\uff0c\u4e86\u89e3 MySQL \u5982\u4f55\u6267\u884c\u67e5\u8be2\uff0c\u4ee5\u53ca\u67e5\u8be2\u4e2d\u6bcf\u4e2a\u6b65\u9aa4\u7684\u6210\u672c\u3002 4. \u4f18\u5316\u67e5\u8be2 \u6839\u636e\u6267\u884c\u8ba1\u5212\uff0c\u8bc6\u522b\u53ef\u4ee5\u4f18\u5316\u7684\u5730\u65b9\uff0c\u4f8b\u5982\uff1a \u4f7f\u7528\u7d22\u5f15\uff1a \u4e3a\u7ecf\u5e38\u67e5\u8be2\u7684\u5217\u521b\u5efa\u7d22\u5f15\uff0c\u52a0\u5feb\u6570\u636e\u68c0\u7d22\u901f\u5ea6\u3002\u91cd\u5199\u67e5\u8be2\uff1a \u5bf9\u4e8e\u590d\u6742\u7684\u67e5\u8be2\uff0c\u5c1d\u8bd5\u91cd\u5199\u6210\u66f4\u7b80\u5355\u7684\u5f62\u5f0f\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 JOIN \u4ee3\u66ff\u5b50\u67e5\u8be2\u3002\u6d88\u9664\u5197\u4f59\uff1a \u907f\u514d\u67e5\u8be2\u4e2d\u5305\u542b\u91cd\u590d\u6216\u4e0d\u5fc5\u8981\u7684\u6761\u4ef6\u3002\u4f18\u5316\u8868\u7ed3\u6784\uff1a \u8003\u8651\u8c03\u6574\u8868\u7ed3\u6784\uff0c\u4f8b\u5982\uff0c\u51cf\u5c11\u8868\u7684\u5b57\u6bb5\u6570\u91cf\u6216\u66f4\u6539\u6570\u636e\u7c7b\u578b\u3002 5. \u76d1\u89c6\u548c\u8c03\u6574 \u5b9a\u671f\u76d1\u89c6\u67e5\u8be2\u6027\u80fd\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u8c03\u6574\u3002\u968f\u7740\u6570\u636e\u548c\u67e5\u8be2\u7684\u66f4\u6539\uff0c\u6267\u884c\u8ba1\u5212\u4e5f\u4f1a\u53d1\u751f\u53d8\u5316\u3002 \u63d0\u793a\uff1a \u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u4f8b\u5982 pt-query-digest \u6216 Percona Toolkit\uff0c\u83b7\u5f97\u66f4\u6df1\u5165\u7684\u89c1\u89e3\u3002 \u8003\u8651\u4f7f\u7528 MySQL \u4f18\u5316\u5668\u5efa\u8bae\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u751f\u6210\u4f18\u5316\u8fc7\u7684\u6267\u884c\u8ba1\u5212\u3002 \u4f18\u5316\u6267\u884c\u8ba1\u5212\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u76d1\u89c6\u548c\u8c03\u6574\u3002 \u4ee5\u4e0a\u5c31\u662f\u6267\u884c\u8ba1\u5212\u600e\u4e48\u505a\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5407","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5407"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5407\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}