{"id":76934,"date":"2024-10-16T10:11:50","date_gmt":"2024-10-16T02:11:50","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76934\/"},"modified":"2024-10-16T10:11:50","modified_gmt":"2024-10-16T02:11:50","slug":"mysql%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e4%bb%a5%e5%8f%8a%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e9%a0%90%e4%bc%b0%e6%96%b9%e5%bc%8f%e5%88%9d%e6%8e%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76934\/","title":{"rendered":"MySQL\u7d71\u8a08\u4fe1\u606f\u4ee5\u53ca\u57f7\u884c\u8a08\u5283\u9810\u4f30\u65b9\u5f0f\u521d\u63a2"},"content":{"rendered":"<h1 id=\"mysql%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e4%bb%a5%e5%8f%8a%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e9%a0%90%e4%bc%b0%e6%96%b9%e5%bc%8f%e5%88%9d%e6%8e%a2-xTbisBwNHY\">MySQL\u7d71\u8a08\u4fe1\u606f\u4ee5\u53ca\u57f7\u884c\u8a08\u5283\u9810\u4f30\u65b9\u5f0f\u521d\u63a2<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u529f\u80fd\u4f86\u5e6b\u52a9\u7528\u6236\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002\u5176\u4e2d\uff0c\u7d71\u8a08\u4fe1\u606f\u548c\u57f7\u884c\u8a08\u5283\u9810\u4f30\u662f\u5169\u500b\u95dc\u9375\u7684\u6982\u5ff5\uff0c\u5c0d\u65bc\u7406\u89e3\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%ef%bc%9f-xTbisBwNHY\">\u4ec0\u9ebc\u662f\u7d71\u8a08\u4fe1\u606f\uff1f<\/h2>\n<p>\u7d71\u8a08\u4fe1\u606f\u662fMySQL\u7528\u4f86\u8a55\u4f30\u67e5\u8a62\u6027\u80fd\u7684\u6578\u64da\u3002\u9019\u4e9b\u4fe1\u606f\u5305\u62ec\u8868\u7684\u884c\u6578\u3001\u7d22\u5f15\u7684\u5206\u4f48\u3001\u6578\u64da\u7684\u5206\u4f48\u7b49\u3002MySQL\u4f7f\u7528\u9019\u4e9b\u7d71\u8a08\u4fe1\u606f\u4f86\u751f\u6210\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u6c7a\u5b9a\u5982\u4f55\u6700\u6709\u6548\u5730\u57f7\u884c\u67e5\u8a62\u3002<\/p>\n<h3 id=\"%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e7%9a%84%e9%a1%9e%e5%9e%8b-xTbisBwNHY\">\u7d71\u8a08\u4fe1\u606f\u7684\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u8868\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u5305\u62ec\u8868\u7684\u884c\u6578\u3001\u6578\u64da\u5927\u5c0f\u7b49\u3002<\/li>\n<li><strong>\u7d22\u5f15\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u5305\u62ec\u7d22\u5f15\u7684\u57fa\u6578\u3001\u7d22\u5f15\u7684\u5927\u5c0f\u7b49\u3002<\/li>\n<li><strong>\u5217\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u5305\u62ec\u5217\u7684\u6578\u64da\u5206\u4f48\u3001\u552f\u4e00\u6027\u7b49\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%94%b6%e9%9b%86%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%ef%bc%9f-xTbisBwNHY\">\u5982\u4f55\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff1f<\/h2>\n<p>MySQL\u6703\u81ea\u52d5\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff0c\u4f46\u7528\u6236\u4e5f\u53ef\u4ee5\u624b\u52d5\u66f4\u65b0\u9019\u4e9b\u4fe1\u606f\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/p>\n<pre><code>ANALYZE TABLE table_name;<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u6703\u5206\u6790\u6307\u5b9a\u7684\u8868\uff0c\u4e26\u66f4\u65b0\u5176\u7d71\u8a08\u4fe1\u606f\u3002\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u53ef\u4ee5\u5e6b\u52a9MySQL\u751f\u6210\u66f4\u6e96\u78ba\u7684\u57f7\u884c\u8a08\u5283\u3002<\/p>\n<h2 id=\"%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e9%a0%90%e4%bc%b0-xTbisBwNHY\">\u57f7\u884c\u8a08\u5283\u9810\u4f30<\/h2>\n<p>\u57f7\u884c\u8a08\u5283\u662fMySQL\u5728\u57f7\u884c\u67e5\u8a62\u4e4b\u524d\u751f\u6210\u7684\u4e00\u500b\u8a08\u5283\uff0c\u63cf\u8ff0\u4e86\u5982\u4f55\u8a2a\u554f\u6578\u64da\u3002\u9019\u500b\u8a08\u5283\u5305\u62ec\u4e86\u4f7f\u7528\u7684\u7d22\u5f15\u3001\u8a2a\u554f\u7684\u884c\u6578\u3001\u9023\u63a5\u7684\u65b9\u5f0f\u7b49\u3002\u7528\u6236\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff1a<\/p>\n<pre><code>EXPLAIN SELECT * FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u6703\u8fd4\u56de\u4e00\u500b\u8868\uff0c\u986f\u793aMySQL\u9810\u4f30\u7684\u57f7\u884c\u8a08\u5283\u3002\u901a\u904e\u5206\u6790\u9019\u500b\u57f7\u884c\u8a08\u5283\uff0c\u7528\u6236\u53ef\u4ee5\u4e86\u89e3\u67e5\u8a62\u7684\u6027\u80fd\u74f6\u9838\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002<\/p>\n<h3 id=\"%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e7%9a%84%e4%b8%bb%e8%a6%81%e7%b5%84%e6%88%90%e9%83%a8%e5%88%86-xTbisBwNHY\">\u57f7\u884c\u8a08\u5283\u7684\u4e3b\u8981\u7d44\u6210\u90e8\u5206<\/h3>\n<ul>\n<li><strong>id\uff1a<\/strong>\u67e5\u8a62\u7684\u552f\u4e00\u6a19\u8b58\u3002<\/li>\n<li><strong>select_type\uff1a<\/strong>\u67e5\u8a62\u7684\u985e\u578b\uff0c\u5982\u7c21\u55ae\u67e5\u8a62\u3001\u806f\u5408\u67e5\u8a62\u7b49\u3002<\/li>\n<li><strong>table\uff1a<\/strong>\u8a2a\u554f\u7684\u8868\u540d\u3002<\/li>\n<li><strong>type\uff1a<\/strong>\u8a2a\u554f\u7684\u985e\u578b\uff0c\u5982\u5168\u8868\u6383\u63cf\u3001\u7d22\u5f15\u6383\u63cf\u7b49\u3002<\/li>\n<li><strong>possible_keys\uff1a<\/strong>\u53ef\u80fd\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>key\uff1a<\/strong>\u5be6\u969b\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>rows\uff1a<\/strong>\u9810\u4f30\u9700\u8981\u8a2a\u554f\u7684\u884c\u6578\u3002<\/li>\n<li><strong>Extra\uff1a<\/strong>\u5176\u4ed6\u4fe1\u606f\uff0c\u5982\u662f\u5426\u4f7f\u7528\u4e86\u81e8\u6642\u8868\u7b49\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd%e7%9a%84%e5%bb%ba%e8%ad%b0-xTbisBwNHY\">\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u5efa\u8b70<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7528\u6236\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u4ee5\u78ba\u4fdd\u57f7\u884c\u8a08\u5283\u7684\u6e96\u78ba\u6027\u3002<\/li>\n<li>\u4f7f\u7528\u5408\u9069\u7684\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528SELECT *\uff0c\u53ea\u9078\u64c7\u9700\u8981\u7684\u5217\u3002<\/li>\n<li>\u5206\u6790\u57f7\u884c\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u4e26\u9032\u884c\u512a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xTbisBwNHY\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684\u7d71\u8a08\u4fe1\u606f\u548c\u57f7\u884c\u8a08\u5283\u9810\u4f30\u662f\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\u3002\u901a\u904e\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u548c\u5206\u6790\u57f7\u884c\u8a08\u5283\uff0c\u7528\u6236\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\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> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u5728\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u74b0\u5883\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u7d71\u8a08\u4fe1\u606f\u53ca\u57f7\u884c\u8a08\u5283\u9810\u4f30\u65b9\u6cd5\uff0c\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u6027\u80fd\u512a\u5316\u7684\u57fa\u790e\u8207\u6280\u5de7\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-76934","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76934","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=76934"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76934\/revisions"}],"predecessor-version":[{"id":76935,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76934\/revisions\/76935"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}