{"id":168547,"date":"2024-11-06T13:17:31","date_gmt":"2024-11-06T05:17:31","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168547\/"},"modified":"2024-11-06T13:17:32","modified_gmt":"2024-11-06T05:17:32","slug":"sql-%e4%b8%ad%e7%b3%bb%e7%b5%b1%e8%ae%8a%e9%87%8f%e7%9a%84%e6%87%89%e7%94%a8%e5%af%a6%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168547\/","title":{"rendered":"SQL \u4e2d\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u5be6\u4f8b"},"content":{"rendered":"<h1 id=\"sql-%e4%b8%ad%e7%b3%bb%e7%b5%b1%e8%ae%8a%e9%87%8f%e7%9a%84%e6%87%89%e7%94%a8%e5%af%a6%e4%be%8b-acEMCVCdhP\">SQL \u4e2d\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u5be6\u4f8b<\/h1>\n<p>\u5728 SQL \u4e2d\uff0c\u7cfb\u7d71\u8b8a\u91cf\u662f\u7528\u4f86\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u5eab\u7684\u5404\u7a2e\u8a2d\u7f6e\u548c\u72c0\u614b\u7684\u8b8a\u91cf\u3002\u9019\u4e9b\u8b8a\u91cf\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u4e86\u89e3\u6578\u64da\u5eab\u7684\u904b\u884c\u72c0\u6cc1\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002\u672c\u6587\u5c07\u63a2\u8a0e SQL \u4e2d\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u5be6\u4f8b\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b3%bb%e7%b5%b1%e8%ae%8a%e9%87%8f%ef%bc%9f-acEMCVCdhP\">\u4ec0\u9ebc\u662f\u7cfb\u7d71\u8b8a\u91cf\uff1f<\/h2>\n<p>\u7cfb\u7d71\u8b8a\u91cf\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u4e2d\u9810\u5b9a\u7fa9\u7684\u8b8a\u91cf\uff0c\u9019\u4e9b\u8b8a\u91cf\u53ef\u4ee5\u7528\u4f86\u63a7\u5236\u6578\u64da\u5eab\u7684\u884c\u70ba\u548c\u6027\u80fd\u3002\u7cfb\u7d71\u8b8a\u91cf\u901a\u5e38\u5305\u62ec\u6578\u64da\u5eab\u7684\u914d\u7f6e\u53c3\u6578\u3001\u904b\u884c\u72c0\u614b\u3001\u7528\u6236\u6703\u8a71\u4fe1\u606f\u7b49\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u9019\u4e9b\u8b8a\u91cf\u4f86\u7372\u53d6\u6709\u95dc\u6578\u64da\u5eab\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b3%bb%e7%b5%b1%e8%ae%8a%e9%87%8f%e7%9a%84%e9%a1%9e%e5%9e%8b-acEMCVCdhP\">\u7cfb\u7d71\u8b8a\u91cf\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>\u5168\u5c40\u8b8a\u91cf\uff1a<\/strong>\u9019\u4e9b\u8b8a\u91cf\u5f71\u97ff\u6574\u500b\u6578\u64da\u5eab\u5be6\u4f8b\u7684\u884c\u70ba\u3002<\/li>\n<li><strong>\u6703\u8a71\u8b8a\u91cf\uff1a<\/strong>\u9019\u4e9b\u8b8a\u91cf\u50c5\u5f71\u97ff\u7576\u524d\u7528\u6236\u6703\u8a71\u7684\u884c\u70ba\u3002<\/li>\n<li><strong>\u52d5\u614b\u8b8a\u91cf\uff1a<\/strong>\u9019\u4e9b\u8b8a\u91cf\u53ef\u4ee5\u5728\u904b\u884c\u6642\u9032\u884c\u4fee\u6539\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b3%bb%e7%b5%b1%e8%ae%8a%e9%87%8f%e7%9a%84%e6%87%89%e7%94%a8%e5%af%a6%e4%be%8b-acEMCVCdhP\">\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u5be6\u4f8b<\/h2>\n<h3 id=\"1-%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%88%e6%9c%ac-acEMCVCdhP\">1. \u7372\u53d6\u6578\u64da\u5eab\u7248\u672c<\/h3>\n<p>\u4f7f\u7528\u7cfb\u7d71\u8b8a\u91cf\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u7684\u7248\u672c\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u6578\u64da\u5eab\u7248\u672c\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT @@version;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u6578\u64da\u5eab\u7684\u7248\u672c\u865f\uff0c\u5e6b\u52a9\u7528\u6236\u4e86\u89e3\u5176\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7248\u672c\u3002<\/p>\n<h3 id=\"2-%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e7%94%a8%e6%88%b6%e4%bf%a1%e6%81%af-acEMCVCdhP\">2. \u7372\u53d6\u7576\u524d\u7528\u6236\u4fe1\u606f<\/h3>\n<p>\u7cfb\u7d71\u8b8a\u91cf\u9084\u53ef\u4ee5\u7528\u4f86\u7372\u53d6\u7576\u524d\u7528\u6236\u7684\u76f8\u95dc\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7576\u524d\u7528\u6236\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT USER();<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u7528\u6236\u540d\uff0c\u5c0d\u65bc\u7ba1\u7406\u7528\u6236\u6b0a\u9650\u548c\u5b89\u5168\u6027\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e5%a4%a7%e5%b0%8f-acEMCVCdhP\">3. \u8abf\u6574\u67e5\u8a62\u7de9\u5b58\u5927\u5c0f<\/h3>\n<p>\u5728\u6027\u80fd\u512a\u5316\u65b9\u9762\uff0c\u7cfb\u7d71\u8b8a\u91cf\u53ef\u4ee5\u7528\u4f86\u8abf\u6574\u67e5\u8a62\u7de9\u5b58\u7684\u5927\u5c0f\u3002\u4ee5\u4e0b\u662f\u4fee\u6539\u67e5\u8a62\u7de9\u5b58\u5927\u5c0f\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>SET GLOBAL query_cache_size = 1048576;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u67e5\u8a62\u7de9\u5b58\u5927\u5c0f\u8a2d\u7f6e\u70ba 1MB\uff0c\u9019\u5c0d\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<h3 id=\"4-%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e9%80%a3%e6%8e%a5%e6%95%b8-acEMCVCdhP\">4. \u7372\u53d6\u7576\u524d\u9023\u63a5\u6578<\/h3>\n<p>\u7528\u6236\u53ef\u4ee5\u901a\u904e\u7cfb\u7d71\u8b8a\u91cf\u4f86\u7372\u53d6\u7576\u524d\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u7528\u6236\u6578\u91cf\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7576\u524d\u9023\u63a5\u6578\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>SHOW STATUS LIKE 'Threads_connected';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u7dda\u7a0b\u6578\uff0c\u5e6b\u52a9\u7528\u6236\u76e3\u63a7\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-acEMCVCdhP\">\u7d50\u8ad6<\/h2>\n<p>\u7cfb\u7d71\u8b8a\u91cf\u5728 SQL \u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5e6b\u52a9\u7528\u6236\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u901a\u904e\u4e86\u89e3\u548c\u4f7f\u7528\u9019\u4e9b\u8b8a\u91cf\uff0c\u7528\u6236\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u76e3\u63a7\u6578\u64da\u5eab\u7684\u72c0\u614b\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u9084\u662f\u904b\u7dad\u4e2d\uff0c\u638c\u63e1\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u90fd\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u4fe1\u606f\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 SQL \u4e2d\u7cfb\u7d71\u8b8a\u91cf\u7684\u61c9\u7528\u5be6\u4f8b\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5229\u7528\u9019\u4e9b\u8b8a\u91cf\u4f86\u512a\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u548c\u67e5\u8a62\u6027\u80fd\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-168547","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168547","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=168547"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168547\/revisions"}],"predecessor-version":[{"id":168548,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168547\/revisions\/168548"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}