{"id":187474,"date":"2024-11-11T14:34:22","date_gmt":"2024-11-11T06:34:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187474\/"},"modified":"2024-11-11T14:34:23","modified_gmt":"2024-11-11T06:34:23","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%a7%e8%83%bd%e6%ae%ba%e6%89%8b%ef%bc%9fmysql-sql-%e5%84%aa%e5%8c%96%e6%94%bb%e7%95%a5%e4%be%86%e4%ba%86%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187474\/","title":{"rendered":"\u6578\u64da\u5eab\u6027\u80fd\u6bba\u624b\uff1fMySQL SQL \u512a\u5316\u653b\u7565\u4f86\u4e86\uff01"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%a7%e8%83%bd%e6%ae%ba%e6%89%8b%ef%bc%9fmysql-sql-%e5%84%aa%e5%8c%96%e6%94%bb%e7%95%a5%e4%be%86%e4%ba%86%ef%bc%81-BIfLjQNHOP\">\u6578\u64da\u5eab\u6027\u80fd\u6bba\u624b\uff1fMySQL SQL \u512a\u5316\u653b\u7565\u4f86\u4e86\uff01<\/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\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u7528\u6236\u8acb\u6c42\u7684\u589e\u52a0\uff0cMySQL \u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u5e38\u898b\u7684 MySQL \u6027\u80fd\u554f\u984c\u53ca\u5176\u512a\u5316\u7b56\u7565\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63d0\u5347\u6578\u64da\u5eab\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-BIfLjQNHOP\">1. \u7406\u89e3\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ff MySQL \u6578\u64da\u5eab\u6574\u9ad4\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002\u4f7f\u7528\u4e0d\u7576\u7684\u67e5\u8a62\u8a9e\u53e5\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 EXPLAIN \u8a9e\u53e5\uff1a<\/strong>\u5728\u57f7\u884c\u67e5\u8a62\u4e4b\u524d\uff0c\u4f7f\u7528 <code>EXPLAIN<\/code> \u8a9e\u53e5\u4f86\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u4e86\u89e3 MySQL \u5982\u4f55\u57f7\u884c\u67e5\u8a62\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li><strong>\u907f\u514d SELECT *\uff1a<\/strong>\u5728\u67e5\u8a62\u4e2d\u907f\u514d\u4f7f\u7528 <code>SELECT *<\/code>\uff0c\u800c\u662f\u660e\u78ba\u6307\u5b9a\u6240\u9700\u7684\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u689d\u4ef6\u6dfb\u52a0\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002\u78ba\u4fdd\u7d22\u5f15\u7684\u9078\u64c7\u6027\u9ad8\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-BIfLjQNHOP\">2. \u512a\u5316\u6578\u64da\u5eab\u7d50\u69cb<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u7d50\u69cb\u8a2d\u8a08\u5c0d\u6027\u80fd\u6709\u8457\u6df1\u9060\u7684\u5f71\u97ff\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u6578\u64da\u5eab\u7d50\u69cb\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u6b63\u898f\u5316\u8207\u53cd\u6b63\u898f\u5316\uff1a<\/strong>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u6b63\u898f\u5316\uff0c\u4ee5\u6d88\u9664\u5197\u9918\u6578\u64da\u3002\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53cd\u6b63\u898f\u5316\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8b80\u53d6\u64cd\u4f5c\u983b\u7e41\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff1a<\/strong>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u548c\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u6574\u6578\u985e\u578b\uff0c\u4f7f\u7528 <code>TINYINT<\/code> \u800c\u4e0d\u662f <code>INT<\/code> \u53ef\u4ee5\u7bc0\u7701\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e8%aa%bf%e6%95%b4-mysql-%e9%85%8d%e7%bd%ae-BIfLjQNHOP\">3. \u8abf\u6574 MySQL \u914d\u7f6e<\/h2>\n<p>MySQL \u7684\u914d\u7f6e\u5c0d\u6027\u80fd\u6709\u8457\u91cd\u8981\u5f71\u97ff\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u914d\u7f6e\u8abf\u6574\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u8abf\u6574\u7de9\u885d\u5340\u5927\u5c0f\uff1a<\/strong>\u6839\u64da\u7cfb\u7d71\u7684\u5167\u5b58\u5927\u5c0f\uff0c\u8abf\u6574 <code>innodb_buffer_pool_size<\/code> \u7684\u5927\u5c0f\uff0c\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u6027\u80fd\u3002<\/li>\n<li><strong>\u4f7f\u7528\u67e5\u8a62\u7de9\u5b58\uff1a<\/strong>\u555f\u7528\u67e5\u8a62\u7de9\u5b58\u53ef\u4ee5\u63d0\u9ad8\u91cd\u8907\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u4f46\u9700\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u8a55\u4f30\u5176\u6548\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-BIfLjQNHOP\">4. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n<p>\u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab\u662f\u4fdd\u6301\u6027\u80fd\u7684\u95dc\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7dad\u8b77\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u5920\u6709\u6548\u3002\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e05\u7406\u904e\u671f\u6578\u64da\uff1a<\/strong>\u5b9a\u671f\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BIfLjQNHOP\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u7684\u6027\u80fd\u512a\u5316\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u67e5\u8a62\u512a\u5316\u3001\u6578\u64da\u5eab\u7d50\u69cb\u8a2d\u8a08\u3001\u914d\u7f6e\u8abf\u6574\u548c\u5b9a\u671f\u7dad\u8b77\u7b49\u591a\u500b\u65b9\u9762\u3002\u901a\u904e\u5be6\u65bd\u4e0a\u8ff0\u7b56\u7565\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u5347 MySQL \u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u5f9e\u800c\u70ba\u7528\u6236\u63d0\u4f9b\u66f4\u5feb\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u66f4\u597d\u7684\u4f7f\u7528\u9ad4\u9a57\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\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL SQL\u512a\u5316\u653b\u7565\uff0c\u63ed\u793a\u6578\u64da\u5eab\u6027\u80fd\u6bba\u624b\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\uff01<\/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-187474","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187474","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=187474"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187474\/revisions"}],"predecessor-version":[{"id":187475,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187474\/revisions\/187475"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}