{"id":76152,"date":"2024-10-16T04:17:17","date_gmt":"2024-10-15T20:17:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76152\/"},"modified":"2024-10-16T04:17:17","modified_gmt":"2024-10-15T20:17:17","slug":"mysql%e5%8d%83%e8%90%ac%e7%b4%9a%e6%95%b8%e6%93%9a%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%84%aa%e5%8c%96%e6%8a%80%e5%b7%a7%e5%8f%8a%e6%80%9d%e8%b7%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76152\/","title":{"rendered":"MySQL\u5343\u842c\u7d1a\u6578\u64da\u67e5\u8a62\u7684\u512a\u5316\u6280\u5de7\u53ca\u601d\u8def"},"content":{"rendered":"<h1 id=\"mysql%e5%8d%83%e8%90%ac%e7%b4%9a%e6%95%b8%e6%93%9a%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%84%aa%e5%8c%96%e6%8a%80%e5%b7%a7%e5%8f%8a%e6%80%9d%e8%b7%af-uoAmJXiuvq\">MySQL\u5343\u842c\u7d1a\u6578\u64da\u67e5\u8a62\u7684\u512a\u5316\u6280\u5de7\u53ca\u601d\u8def<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u9ad8\u6548\u5730\u67e5\u8a62\u5343\u842c\u7d1a\u6578\u64da\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\u4e00\u4e9b\u512a\u5316MySQL\u67e5\u8a62\u6027\u80fd\u7684\u6280\u5de7\u548c\u601d\u8def\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-uoAmJXiuvq\">1. \u4f7f\u7528\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u5728\u8868\u7684\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7d22\u5f15\u7684\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u5217\uff1a<\/strong>\u5c0d\u65bc\u7d93\u5e38\u7528\u65bc\u67e5\u8a62\u7684\u5217\uff08\u5982\u4e3b\u9375\u3001\u5916\u9375\u548c\u7d93\u5e38\u7528\u65bc\u7be9\u9078\u7684\u5217\uff09\u5275\u5efa\u7d22\u5f15\u3002<\/li>\n<li><strong>\u907f\u514d\u904e\u591a\u7d22\u5f15\uff1a<\/strong>\u96d6\u7136\u7d22\u5f15\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u61c9\u8b39\u614e\u9078\u64c7\u3002<\/li>\n<li><strong>\u4f7f\u7528\u8907\u5408\u7d22\u5f15\uff1a<\/strong>\u5c0d\u65bc\u591a\u500b\u5217\u7684\u67e5\u8a62\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u8907\u5408\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-uoAmJXiuvq\">2. \u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u512a\u5316\u67e5\u8a62\u8a9e\u53e5\u662f\u63d0\u9ad8\u6027\u80fd\u7684\u53e6\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u67e5\u8a62\u512a\u5316\u6280\u5de7\uff1a<\/p>\n<ul>\n<li><strong>\u907f\u514dSELECT *\uff1a<\/strong>\u53ea\u9078\u64c7\u9700\u8981\u7684\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u5927\u5c0f\u3002<\/li>\n<li><strong>\u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62\uff1a<\/strong>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528JOIN\u53ef\u4ee5\u6bd4\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002<\/li>\n<li><strong>\u4f7f\u7528LIMIT\uff1a<\/strong>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528LIMIT\u53ef\u4ee5\u9650\u5236\u8fd4\u56de\u7684\u884c\u6578\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-uoAmJXiuvq\">3. \u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u826f\u597d\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u5c0d\u65bc\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u8a2d\u8a08\u4e0a\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u6b63\u898f\u5316\uff1a<\/strong>\u901a\u904e\u6b63\u898f\u5316\u4f86\u6d88\u9664\u5197\u9918\u6578\u64da\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u7684\u5b58\u5132\u91cf\u548c\u67e5\u8a62\u7684\u8907\u96dc\u6027\u3002<\/li>\n<li><strong>\u5206\u5340\u8868\uff1a<\/strong>\u5c0d\u65bc\u975e\u5e38\u5927\u7684\u8868\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u5340\u8868\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff1a<\/strong>\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u4e26\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-uoAmJXiuvq\">4. \u76e3\u63a7\u548c\u8abf\u6574<\/h2>\n<p>\u6301\u7e8c\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\u4e26\u9032\u884c\u8abf\u6574\u662f\u78ba\u4fdd\u67e5\u8a62\u6548\u7387\u7684\u95dc\u9375\u3002\u53ef\u4ee5\u4f7f\u7528MySQL\u7684\u6162\u67e5\u8a62\u65e5\u8a8c\u4f86\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff0c\u4e26\u91dd\u5c0d\u6027\u5730\u9032\u884c\u512a\u5316\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c-uoAmJXiuvq\">\u793a\u4f8b\uff1a\u4f7f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c<\/h3>\n<pre><code>SET GLOBAL slow_query_log = 'ON';\nSET GLOBAL long_query_time = 1; -- \u8a2d\u7f6e\u6162\u67e5\u8a62\u7684\u6642\u9593\u95be\u503c\n<\/code><\/pre>\n<p>\u901a\u904e\u5206\u6790\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u53ef\u4ee5\u627e\u51fa\u9700\u8981\u512a\u5316\u7684\u67e5\u8a62\uff0c\u4e26\u6839\u64da\u524d\u8ff0\u7684\u6280\u5de7\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uoAmJXiuvq\">\u7e3d\u7d50<\/h2>\n<p>\u512a\u5316MySQL\u5343\u842c\u7d1a\u6578\u64da\u67e5\u8a62\u7684\u904e\u7a0b\u662f\u4e00\u500b\u6301\u7e8c\u7684\u5de5\u4f5c\uff0c\u9700\u8981\u7d50\u5408\u7d22\u5f15\u3001\u67e5\u8a62\u512a\u5316\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u6027\u80fd\u76e3\u63a7\u7b49\u591a\u65b9\u9762\u7684\u6280\u5de7\u3002\u901a\u904e\u9019\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u61c9\u7528\u7684\u6548\u7387\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684MySQL\u6578\u64da\u5eab\u9700\u6c42\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u80fd\u5920\u5feb\u901f\u97ff\u61c9\u7528\u6236\u8acb\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u5343\u842c\u7d1a\u6578\u64da\u67e5\u8a62\u7684\u512a\u5316\u6280\u5de7\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u6e1b\u5c11\u5ef6\u9072\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u601d\u8def\u8207\u65b9\u6cd5\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-76152","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76152","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=76152"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76152\/revisions"}],"predecessor-version":[{"id":76153,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76152\/revisions\/76153"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}