{"id":194541,"date":"2024-11-13T07:31:22","date_gmt":"2024-11-12T23:31:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194541\/"},"modified":"2024-11-13T07:31:23","modified_gmt":"2024-11-12T23:31:23","slug":"%e7%94%a8mysqldumpslow%e5%88%86%e6%9e%90%e5%9f%b7%e8%a1%8c%e8%bc%83%e6%85%a2%e7%9a%84sql%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194541\/","title":{"rendered":"\u7528mysqldumpslow\u5206\u6790\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e7%94%a8mysqldumpslow%e5%88%86%e6%9e%90%e5%9f%b7%e8%a1%8c%e8%bc%83%e6%85%a2%e7%9a%84sql%e8%aa%9e%e5%8f%a5-kbhxrBxFJW\">\u7528mysqldumpslow\u5206\u6790\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6027\u80fd\u512a\u5316\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u8ab2\u984c\u3002\u7576\u61c9\u7528\u7a0b\u5e8f\u7684\u97ff\u61c9\u901f\u5ea6\u8b8a\u6162\u6642\uff0c\u901a\u5e38\u662f\u56e0\u70ba\u67d0\u4e9bSQL\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u904e\u9577\u3002\u70ba\u4e86\u627e\u51fa\u9019\u4e9b\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5\uff0cMySQL\u63d0\u4f9b\u4e86\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u2014\u2014mysqldumpslow\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528mysqldumpslow\u4f86\u5206\u6790\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmysqldumpslow%ef%bc%9f-kbhxrBxFJW\">\u4ec0\u9ebc\u662fmysqldumpslow\uff1f<\/h2>\n<p>mysqldumpslow\u662f\u4e00\u500bMySQL\u9644\u5e36\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u4e3b\u8981\u7528\u65bc\u5206\u6790\u6162\u67e5\u8a62\u65e5\u8a8c\uff08slow query log\uff09\u3002\u7576MySQL\u4f3a\u670d\u5668\u57f7\u884c\u7684\u67e5\u8a62\u8d85\u904e\u8a2d\u5b9a\u7684\u6642\u9593\u95be\u503c\u6642\uff0c\u9019\u4e9b\u67e5\u8a62\u6703\u88ab\u8a18\u9304\u5230\u6162\u67e5\u8a62\u65e5\u8a8c\u4e2d\u3002mysqldumpslow\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5f9e\u9019\u4e9b\u65e5\u8a8c\u4e2d\u63d0\u53d6\u6709\u7528\u7684\u4fe1\u606f\uff0c\u4e26\u4ee5\u6613\u65bc\u7406\u89e3\u7684\u683c\u5f0f\u986f\u793a\u51fa\u4f86\u3002<\/p>\n<h2 id=\"%e5%95%9f%e7%94%a8%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c-kbhxrBxFJW\">\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c<\/h2>\n<p>\u5728\u4f7f\u7528mysqldumpslow\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fdd\u6162\u67e5\u8a62\u65e5\u8a8c\u5df2\u7d93\u555f\u7528\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u555f\u7528\uff1a<\/p>\n<pre><code>SET GLOBAL slow_query_log = 'ON';\nSET GLOBAL long_query_time = 1;  -- \u8a2d\u5b9a\u67e5\u8a62\u8d85\u904e1\u79d2\u7684\u67e5\u8a62\u88ab\u8a18\u9304\n<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u6240\u6709\u57f7\u884c\u6642\u9593\u8d85\u904e1\u79d2\u7684\u67e5\u8a62\u5c07\u6703\u88ab\u8a18\u9304\u5230\u6162\u67e5\u8a62\u65e5\u8a8c\u4e2d\u3002\u65e5\u8a8c\u7684\u9ed8\u8a8d\u4f4d\u7f6e\u901a\u5e38\u662f\/var\/log\/mysql\/mysql-slow.log\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u8a62\u7576\u524d\u7684\u65e5\u8a8c\u4f4d\u7f6e\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'slow_query_log_file';\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8mysqldumpslow%e5%88%86%e6%9e%90%e6%85%a2%e6%9f%a5%e8%a9%a2-kbhxrBxFJW\">\u4f7f\u7528mysqldumpslow\u5206\u6790\u6162\u67e5\u8a62<\/h2>\n<p>\u4e00\u65e6\u6162\u67e5\u8a62\u65e5\u8a8c\u555f\u7528\u4e26\u958b\u59cb\u8a18\u9304\u67e5\u8a62\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528mysqldumpslow\u4f86\u5206\u6790\u9019\u4e9b\u67e5\u8a62\u3002\u57fa\u672c\u7684\u4f7f\u7528\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>mysqldumpslow [options] \/path\/to\/slow-query.log\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u9078\u9805\uff1a<\/p>\n<ul>\n<li><code>-s<\/code>\uff1a\u6307\u5b9a\u6392\u5e8f\u65b9\u5f0f\uff0c\u4f8b\u5982\u6309\u57f7\u884c\u6b21\u6578\uff08c\uff09\u3001\u7e3d\u6642\u9593\uff08t\uff09\u3001\u5e73\u5747\u6642\u9593\uff08l\uff09\u7b49\u3002<\/li>\n<li><code>-t<\/code>\uff1a\u6307\u5b9a\u986f\u793a\u7684\u67e5\u8a62\u6578\u91cf\u3002<\/li>\n<li><code>-r<\/code>\uff1a\u986f\u793a\u539f\u59cb\u67e5\u8a62\uff0c\u800c\u4e0d\u662f\u7c21\u5316\u7684\u7248\u672c\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u986f\u793a\u57f7\u884c\u6b21\u6578\u6700\u591a\u768410\u689d\u67e5\u8a62\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>mysqldumpslow -s c -t 10 \/var\/log\/mysql\/mysql-slow.log\n<\/code><\/pre>\n<h2 id=\"%e5%88%86%e6%9e%90%e7%b5%90%e6%9e%9c%e7%a4%ba%e4%be%8b-kbhxrBxFJW\">\u5206\u6790\u7d50\u679c\u793a\u4f8b<\/h2>\n<p>\u57f7\u884c\u4e0a\u8ff0\u547d\u4ee4\u5f8c\uff0c\u53ef\u80fd\u6703\u5f97\u5230\u5982\u4e0b\u7684\u8f38\u51fa\uff1a<\/p>\n<pre><code>Count: 10  Time: 0.1234  Lock: 0.0000  Rows: 1\nSELECT * FROM users WHERE id = ?;\n<\/code><\/pre>\n<p>\u9019\u8868\u793a\u8a72\u67e5\u8a62\u57f7\u884c\u4e8610\u6b21\uff0c\u7e3d\u8017\u6642\u70ba0.1234\u79d2\uff0c\u4e26\u4e14\u6bcf\u6b21\u67e5\u8a62\u8fd4\u56de1\u884c\u6578\u64da\u3002\u901a\u904e\u9019\u4e9b\u4fe1\u606f\uff0c\u53ef\u4ee5\u9032\u4e00\u6b65\u5206\u6790\u8a72\u67e5\u8a62\u7684\u6027\u80fd\u554f\u984c\uff0c\u4f8b\u5982\u662f\u5426\u9700\u8981\u6dfb\u52a0\u7d22\u5f15\u6216\u512a\u5316\u67e5\u8a62\u908f\u8f2f\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%85%a2%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%bb%ba%e8%ad%b0-kbhxrBxFJW\">\u512a\u5316\u6162\u67e5\u8a62\u7684\u5efa\u8b70<\/h2>\n<p>\u5728\u8b58\u5225\u51fa\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5\u5f8c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u512a\u5316\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u6aa2\u67e5\u4e26\u6dfb\u52a0\u5fc5\u8981\u7684\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li>\u91cd\u69cb\u67e5\u8a62\u8a9e\u53e5\uff0c\u907f\u514d\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684\u5b50\u67e5\u8a62\u6216\u806f\u63a5\u3002<\/li>\n<li>\u4f7f\u7528EXPLAIN\u547d\u4ee4\u4f86\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u5eab\u7684\u7d50\u69cb\u8a2d\u8a08\uff0c\u662f\u5426\u9700\u8981\u9032\u884c\u6b63\u898f\u5316\u6216\u53cd\u6b63\u898f\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kbhxrBxFJW\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528mysqldumpslow\u5206\u6790\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5\u662f\u4e00\u500b\u6709\u6548\u7684\u6027\u80fd\u512a\u5316\u65b9\u6cd5\u3002\u901a\u904e\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\u4e26\u4f7f\u7528mysqldumpslow\u5de5\u5177\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u8f15\u9b06\u8b58\u5225\u548c\u512a\u5316\u6027\u80fd\u74f6\u9838\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\u7a0b\u5e8f\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>\u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6027\u80fd\u5f97\u5230\u5145\u5206\u767c\u63ee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528mysqldumpslow\u5de5\u5177\u5206\u6790\u57f7\u884c\u8f03\u6162\u7684SQL\u8a9e\u53e5\uff0c\u5e6b\u52a9\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\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-194541","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194541","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=194541"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194541\/revisions"}],"predecessor-version":[{"id":194542,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194541\/revisions\/194542"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}