{"id":41565,"date":"2023-05-29T16:45:32","date_gmt":"2023-04-10T09:16:13","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bc%80%e5%a7%8b%e5%ad%a6%e4%b9%a0-postgresql-%e8%b0%83%e4%bc%98\/"},"modified":"2024-04-30T06:30:36","modified_gmt":"2024-04-29T22:30:36","slug":"%e5%bc%80%e5%a7%8b%e5%ad%a6%e4%b9%a0-postgresql-%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bc%80%e5%a7%8b%e5%ad%a6%e4%b9%a0-postgresql-%e8%b0%83%e4%bc%98\/","title":{"rendered":"\u5f00\u59cb\u5b66\u4e60 PostgreSQL \u8c03\u4f18"},"content":{"rendered":"<p>\u6211\u7b2c\u4e00\u6b21\u5b9e\u4e60\u65f6\u9700\u8981\u5bf9PosgreSQL\u8fdb\u884c\u8c03\u4f18\uff0c\u6240\u4ee5\u6211\u4f1a\u5217\u4e3e\u4e00\u4e9b\u53ef\u80fd\u6709\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6211\u4eec\u9009\u62e9\u4e86\u9884\u8ba1\u57282024\u5e74\u4e4b\u524d\u4ecd\u6709\u5e7f\u6cdb\u4f7f\u7528\u7684PostgreSQL 12\u4f5c\u4e3a\u652f\u6301\u7ed3\u675f\u7684\u5bf9\u8c61\u3002<\/p>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<h2>\u684c\u5b50\u4fe1\u606f<\/h2>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- \u30c6\u30fc\u30d6\u30eb\u4e00\u89a7\u3092\u8868\u793a<\/span>\r\n<span class=\"err\">\\<\/span><span class=\"n\">dt<\/span>\r\n<span class=\"c1\">-- \u30c6\u30fc\u30d6\u30eb\u306e\u8a73\u7d30\u60c5\u5831\u3092\u8868\u793a<\/span>\r\n<span class=\"err\">\\<\/span><span class=\"n\">d<\/span> <span class=\"cm\">\/* table_name *\/<\/span>\r\n<\/code><\/pre>\n<p>\u7279\u522b\u662f\/* table_name *\/\u975e\u5e38\u91cd\u8981\u3002\u5b83\u53ef\u4ee5\u663e\u793a\u8868\u7684\u5217\u6e05\u5355\uff0c\u8fd8\u53ef\u4ee5\u68c0\u67e5\u6b63\u89c4\u5316\u7684\u72b6\u6001\u3002<\/p>\n<p>\u7531\u65bc\u7d22\u5f15\u4e00\u89bd\u4e5f\u6703\u986f\u793a\u51fa\u4f86\uff0c\u6240\u4ee5\u5982\u679c\u60f3\u8981\u5efa\u7acb\u7d22\u5f15\uff0c\u9996\u5148\u61c9\u8003\u616e\u662f\u5426\u80fd\u5920\u5229\u7528\u73fe\u6709\u7684\u7d22\u5f15\u4f86\u89e3\u6c7a\u554f\u984c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8003\u616e\u9032\u884c\u5217\u7684\u6392\u5e8f\u8b8a\u66f4\u7b49\u64cd\u4f5c\u3002<br \/>\n\u6ce8\u610f\u907f\u514d\u904e\u5ea6\u5275\u5efa\u7d22\u5f15\u5c0d\u6027\u80fd\u9020\u6210\u5f71\u97ff\u3002<\/p>\n<h2>\u5b9e\u65bd\u8ba1\u5212<\/h2>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u6211\u60f3\u4e13\u6ce8\u4e8e\u6267\u884c\u8ba1\u5212\u4e2d\u53ef\u80fd\u82b1\u8d39\u65f6\u95f4\u8f83\u957f\u7684\u90e8\u5206\uff0c\u8fd9\u5bf9\u4e8e\u8fdb\u884cSQL\u7684\u57fa\u672c\u8c03\u4f18\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h3>\u83b7\u5f97\u65b9\u5f0f<\/h3>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- insert,update,delete\u306e\u5834\u5408\u306f\u524d\u5f8c\u306ebegin;rollback;\u3092\u5fd8\u308c\u305a\u306b\u5b9f\u884c\u3059\u308b<\/span>\r\n<span class=\"c1\">-- BEGIN;<\/span>\r\n<span class=\"k\">EXPLAIN<\/span> <span class=\"k\">ANALYZE<\/span> <span class=\"cm\">\/* SQL\u6587 *\/<\/span><span class=\"p\">;<\/span>\r\n<span class=\"c1\">-- ROLLBACK;<\/span>\r\n<\/code><\/pre>\n<h3>\u770b\u6cd5<\/h3>\n<p>\u9996\u5148\uff0c\u67e5\u770b\u5c42\u6b21\u7ed3\u6784\u3002<br \/>\n\u4ece\u4e0a\u5c42\u5230\u4e0b\u5c42\uff0c\u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u5faa\u73af\u5e76\u6267\u884c\u64cd\u4f5c\u3002<br \/>\n\u5c06\u6bcf\u4e00\u884c\u7684\u5904\u7406\u5185\u5bb9\u4e0e\u5b9e\u9645\u7684SQL\u8fdb\u884c\u5bf9\u7167\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">time: \u51e6\u7406\u6642\u9593<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">rows: \u9078\u629e\u3055\u308c\u3066\u3044\u308b\u4ef6\u6570<\/ul>\n<p>\u5982\u679c\u65f6\u95f4\u5f88\u5927\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u74f6\u9888\u3002<br \/>\n\u5982\u679c\u884c\u6570\u5f88\u591a\uff0c\u91cd\u590d\u6b21\u6570\u4f1a\u589e\u52a0\u3002<\/p>\n<p>\u53ef\u4ee5\u50cf\u6bcf\u6b21\u90fd\u8981\u8c37\u6b4c\u4e00\u6837\u53bb\u4e86\u89e3\u5404\u79cd\u5904\u7406\u7684\u542b\u4e49\u3002<br \/>\n\u4e86\u89e3\u8054\u63a5\u5904\u7406\u7684\u5d4c\u5957\u5faa\u73af\u3001\u6563\u5217\u548c\u5408\u5e76\u7684\u7279\u6027\u53ef\u80fd\u4f1a\u66f4\u5bb9\u6613\u4e0a\u624b\u3002<\/p>\n<h2>\u5206\u6790\uff0c\u6e05\u6d01<\/h2>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>ANALYZE\u662f\u4e3a\u4e86\u5f97\u5230\u5173\u4e8e\u5b9e\u9645\u6570\u636e\u5b58\u50a8\u60c5\u51b5\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u4ee5\u4fbf\u83b7\u5f97\u9002\u5f53\u7684\u6267\u884c\u8ba1\u5212\u3002<br \/>\nVACUUM\u662f\u7528\u4e8e\u7269\u7406\u4e0a\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u884c\uff0c\u4f8b\u5982\u5728delete\u548cupdate\u64cd\u4f5c\u4e4b\u540e\u3002<\/p>\n<p>\u5982\u679c\u901a\u5e38\u6267\u884c\u65e0\u6cd5\u6ee1\u8db3\u8981\u6c42\uff0c\u53ef\u4ee5\u9009\u62e9\u5404\u79cd\u5f3a\u5927\u7684\u6267\u884c\u9009\u9879\uff08\u8bcd\u6c47\u529b\uff09\uff0c\u4f8b\u5982\u4f7f\u7528VACUUM\u7684FULL\u9009\u9879\uff0c\u5b83\u4f1a\u5b8c\u5168\u590d\u5236\u8868\u683c\uff0c\u5f97\u5230\u4e00\u4e2a\u5168\u65b0\u6574\u9f50\u6392\u5217\u7684\u8868\u683c\u3002\uff08\u4f46\u9700\u8981\u6392\u4ed6\u9501\uff0c\u5e76\u4e14\u9700\u8981\u8f83\u957f\u65f6\u95f4\u6267\u884c\u3002\uff09<\/p>\n<h3>\u6267\u884c\u6b65\u9aa4<\/h3>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- VACUUM,ANALYZE\u306f\u305d\u308c\u305e\u308c\u5358\u54c1\u5b9f\u884c\u3067\u304d\u308b<\/span>\r\n<span class=\"k\">VACUUM<\/span> <span class=\"k\">ANALYZE<\/span> <span class=\"cm\">\/* table_name *\/<\/span> <span class=\"cm\">\/* column_name *\/<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u7cfb\u7edf\u76ee\u5f55<\/h2>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u4ece\u516c\u5f0f\u6587\u4ef6\u4e2d<\/p>\n<blockquote><p>\u7cfb\u7edf\u76ee\u5f55\u662f\u4e00\u4e2a\u5b58\u50a8\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u8868\u3001\u5217\u7b49\u6a21\u5f0f\u5143\u6570\u636e\u548c\u5185\u90e8\u4fe1\u606f\u7684\u5730\u65b9\u3002<\/p><\/blockquote>\n<p>\u6211\u5c06\u5217\u4e3e\u4ee5\u4e0b\u53ef\u80fd\u7528\u4e8e\u8c03\u6574\u7684\u9879\u76ee\u3002<\/p>\n<h3>\u7edf\u8ba1\u6570\u636e<\/h3>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u6267\u884c\u5206\u6790\u540e\u7684\u7ed3\u679c\u5c06\u88ab\u4fdd\u5b58\u3002<\/p>\n<p>pg_statistics\u662f\u5e95\u5c42\u8868\uff0cpg_stats\u662f\u4f9b\u666e\u901a\u7528\u6237\u4f7f\u7528\u7684\u89c6\u56fe\u3002<br \/>\n\u4e00\u822c\u6765\u8bf4\uff0c\u4f7f\u7528pg_stats\u5e94\u8be5\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n<p>\u6839\u636e\u7edf\u8ba1\u4fe1\u606f\u7684\u540d\u5b57\uff0c\u901a\u5e38\u662f\u6307\u83b7\u53d6\u76f8\u5bf9\u4e8e\u8868\u683c\u7684\u7edf\u8ba1\u6570\u636e\u7684\u5f62\u8c61\u63cf\u8ff0\u3002\u4f8b\u5982\uff0c\u8bb0\u5f55\u5217\u503c\u7684\u5206\u5e03\u60c5\u51b5\u7684\u76f4\u65b9\u56fe\u7b49\u3002<\/p>\n<p>\u7531\u4e8e\u4f18\u5316\u5668\u7684\u81ea\u52a8\u64cd\u4f5c\uff0c\u6211\u8ba4\u4e3a\u6ca1\u6709\u592a\u591a\u673a\u4f1a\u53bb\u4ed4\u7ec6\u67e5\u770b\u3002<br \/>\n\u5f53\u60f3\u8981\u8fdb\u884c\u5168\u529b\u8c03\u4f18\u65f6\uff0c\u5982\u679c\u4e0d\u4e86\u89e3\u6570\u636e\u7684\u5206\u5e03\uff0c\u5c31\u65e0\u6cd5\u9009\u62e9\u9002\u5f53\u7684\u7d22\u5f15\u548c\u6267\u884c\u8ba1\u5212\u3002<\/p>\n<h3>pg_locks- PostgreSQL\u9501<\/h3>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u7684\u9501\u72b6\u6001\u3002<br \/>\n\u4e86\u89e3\u8868\u7ea7\u3001\u884c\u7ea7\u7b49\u9501\u7684\u7c7b\u578b\u4f3c\u4e4e\u4f1a\u66f4\u597d\u3002<br \/>\n\u8fc7\u5927\u7684\u9501\u53ef\u80fd\u662f\u4e8b\u6545\u7684\u539f\u56e0\u3002<br \/>\n\u6b7b\u9501\u4f3c\u4e4e\u9700\u8981\u91cd\u65b0\u5ba1\u89c6\u5904\u7406\u7684\u987a\u5e8f\u3002<\/p>\n<h3>\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u5668<\/h3>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u5728 pg_stat_database \u4e2d\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b\u6570\u636e\u5e93\u4e0a\u7684\u4e8b\u52a1\u6267\u884c\u6b21\u6570\u3001\u7f13\u5b58\u547d\u4e2d\u5757\u6570\u7b49\u4e0e\u8868\u683c\u7edf\u8ba1\u4fe1\u606f\u4e0d\u540c\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<\/p>\n<p>\u5b9a\u671f\u68c0\u67e5\u53ef\u4ee5\u786e\u8ba4\u4e00\u5468\u7684\u503e\u5411\uff0c\u4f8b\u5982\u661f\u671f\u51e0\u548c\u65f6\u95f4\u6bb5\u3002\u8fd9\u5bf9\u4e8e\u6574\u4e2a\u6570\u636e\u5e93\u7684\u8c03\u4f18\u662f\u5fc5\u8981\u7684\u3002\u76ee\u524d\u8fd8\u4e0d\u786e\u5b9a\u662f\u5426\u53ef\u4ee5\u7528\u4e8eSQL\u8c03\u4f18\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fOSS-DB Gold\u8003\u8bd5\u8303\u56f4\u7684\u5185\u5bb9\u3002\u770b\u4e00\u4e0b\u53ef\u80fd\u4f1a\u6709\u597d\u5904\u3002<\/p>\n<blockquote><p>pg_stat_activity\u3001pg_stat_database<br \/>\npg_stat_all_tables\u7b49,\u5c31\u662f\u67e5\u8be2\u7ea7\u522b\u7684\u7edf\u8ba1\u4fe1\u606f<br \/>\npg_statio_all_tables\u7b49\uff0c\u5c31\u662f\u5757\u7ea7\u522b\u7684\u7edf\u8ba1\u4fe1\u606f<\/p><\/blockquote>\n<blockquote><p>pg_stat_archiver (\u5f52\u6863\u7edf\u8ba1)<br \/>\npg_stat_bgwriter (\u540e\u53f0\u5199\u5165\u7edf\u8ba1)<br \/>\n\u5f85\u673a\u4e8b\u4ef6 (pg_stat_activity.wait_event)<br \/>\npg_stat_progress_vacuum (\u7a7a\u95f2\u8fdb\u5ea6\u7edf\u8ba1)<\/p><\/blockquote>\n<h2>\u63d0\u793a\u53e5 j\u00f9)<\/h2>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u5f53\u4f18\u5316\u7a0b\u5e8f\u4e0d\u542c\u8bdd\u7684\u65f6\u5019\uff0c\u70b9\u71c3\u5b83\u65f6\u8981\u7948\u7977\u7684\u90a3\u4e2a\u4e1c\u897f\u3002\u8bf7\u6ce8\u610f\u5b83\u4e0d\u662f\u5b98\u65b9\u7684\uff0c\u800c\u662f\u5916\u90e8\u6a21\u5757\u3002<\/p>\n<h2>\u63d2\u5165\u3001\u66f4\u65b0\u7684\u5f00\u9500<\/h2>\n<p>(\u4ec5\u4f9b\u53c2\u8003)<\/p>\n<p>&nbsp;<\/p>\n<p>\u5f53\u6570\u636e\u8fc1\u79fb\u7b49\u64cd\u4f5c\u9891\u7e41\u6267\u884cinsert\u548cupdate\u65f6\uff0c\u5e94\u51cf\u5c11\u5f00\u9500\u3002\u5177\u4f53\u800c\u8a00\uff0c\u5f00\u9500\u6307\u7684\u662f<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3082insert(update\u3082\u5185\u90e8\u7684\u306bdelete\u2192insert\u3057\u3066\u3044\u308b\u3001\u306f\u305a)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5236\u7d04\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u7167\u5408(\u4e00\u610f\u5236\u7d04\u3001\u5916\u90e8\u30ad\u30fc\u5236\u7d04)<\/ul>\n<p>\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u7f51\u5740\u7b49\u7b49\u3002\u5176\u4f59\u5185\u5bb9\u53ef\u4ee5\u5728\u53c2\u8003\u7f51\u5740\u67e5\u627e(\u59d4\u6d3e\u4ed6\u4eba\u5904\u7406)\u3002<\/p>\n<h2>\u5176\u4ed6<\/h2>\n<h3>SQL\u76f8\u5173\u4e66\u7c4d\u7684\u76ee\u5f55<\/h3>\n<p>\u5982\u679c\u4ee5\u76ee\u5f55\u7684\u7ea7\u522b\u56de\u5fc6\u8d77\u6765\uff0c\u53ef\u80fd\u4f1a\u6709\u597d\u4e8b\u53d1\u751f\uff08\u7948\u7977\uff09\u3002<br \/>\n\u5982\u679c\u6709\u65f6\u95f4\u7684\u8bdd\uff0c\u60f3\u8981\u91cd\u65b0\u9605\u8bfb\u4e66\u7c4d\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>\u6295\u5f71\u7247<\/h3>\n<p>\u6211\u8ba4\u4e3a\u6709\u5f88\u591a\u4e0d\u540c\u7684\u9009\u62e9\uff0c\u4f46\u5c31\u76ee\u524d\u800c\u8a00\uff0c\u6211\u5728\u8def\u4e0a\u627e\u5230\u4e86\u8fd9\u4e2a\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u7b2c\u4e00\u6b21\u5b9e\u4e60\u65f6\u9700\u8981\u5bf9PosgreSQL\u8fdb\u884c\u8c03\u4f18\uff0c\u6240\u4ee5\u6211\u4f1a\u5217\u4e3e\u4e00\u4e9b\u53ef\u80fd\u6709\u7528\u7684\u65b9\u6cd5\u3002 \u6211\u4eec\u9009\u62e9\u4e86\u9884\u8ba1\u57282024\u5e74\u4e4b [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41565","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5f00\u59cb\u5b66\u4e60 PostgreSQL \u8c03\u4f18 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5f00\u59cb\u5b66\u4e60-postgresql-\u8c03\u4f18\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f00\u59cb\u5b66\u4e60 PostgreSQL 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