{"id":41437,"date":"2023-06-28T18:08:28","date_gmt":"2023-03-22T14:35:47","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8epostgresql%e7%9a%84vacuum\/"},"modified":"2024-04-30T11:07:15","modified_gmt":"2024-04-30T03:07:15","slug":"%e5%85%b3%e4%ba%8epostgresql%e7%9a%84vacuum","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8epostgresql%e7%9a%84vacuum\/","title":{"rendered":"\u5173\u4e8ePostgreSQL\u7684VACUUM"},"content":{"rendered":"

\u5438\u5c18\u5668\u7684\u610f\u601d\u662f<\/h2>\n

\u516c\u5f0f\u6587\u4ef6\u94fe\u63a5\uff1ahttps:\/\/www.postgresql.jp\/document\/9.6\/html\/sql-vacuum.html
\n\u6765\u81ea\u5b98\u65b9\u6587\u4ef6<\/p>\n

VACUUM \u306f\u3001\u4e0d\u8981\u30bf\u30d7\u30eb\u304c\u4f7f\u7528\u3059\u308b\u9818\u57df\u3092\u56de\u53ce\u3057\u307e\u3059\u3002PostgreSQL\u306e\u901a\u5e38\u52d5\u4f5c\u3067\u306f\u3001\u524a\u9664\u3055\u308c\u305f\u30bf\u30d7\u30eb\u3084\u66f4\u65b0\u306b\u3088\u3063\u3066\u4e0d\u8981\u3068\u306a\u3063\u305f\u30bf\u30d7\u30eb\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u7269\u7406\u7684\u306b\u306f\u524a\u9664\u3055\u308c\u307e\u305b\u3093\u3002 \u3053\u308c\u3089\u306e\u30bf\u30d7\u30eb\u306fVACUUM\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u5b58\u5728\u3057\u7d9a\u3051\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001\u7279\u306b\u66f4\u65b0\u983b\u5ea6\u304c\u591a\u3044\u30c6\u30fc\u30d6\u30eb\u3067\u306f\u3001VACUUM\u3092\u5b9a\u671f\u7684\u306b\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\r\n<\/code><\/pre>\n
\u5728PostgreSQL\u4e2d\uff0c\u5373\u4f7f\u5220\u9664\u6570\u636e\uff0c\u5b9e\u9645\u4e0a\u53ea\u662f\u7ed9\u6570\u636e\u6dfb\u52a0\u4e86\u4e00\u4e2a\u5220\u9664\u6807\u8bb0\uff0c\u800c\u5e76\u6ca1\u6709\u5b8c\u5168\u5220\u9664\uff0c\u53ea\u662f\u53d8\u5f97\u4e0d\u53ef\u89c1\u3002
\n\u901a\u8fc7\u6267\u884cVACUUM\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5f7b\u5e95\u5220\u9664\u5e26\u6709\u5220\u9664\u6807\u8bb0\u7684\u6570\u636e\uff0c\u4ece\u800c\u4f7f\u7a7a\u95f2\u7a7a\u95f4\u53ef\u4ee5\u91cd\u65b0\u5229\u7528\u3002
\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u5bf9\u4e8e\u66f4\u65b0\u9891\u7e41\u7684\u8868\u683c\u6267\u884c\u6b64\u64cd\u4f5c\u6548\u679c\u6700\u4f73\u3002<\/p>\n
\u5143\u7ec4\u662f\u4ec0\u4e48<\/h2>\n
\u5728\u8868\u683c\u4e2d\uff0c\u4f7f\u7528INSERT\u3001UPDATE\u548cDELETE\u64cd\u4f5c\u6765\u5b58\u50a8\u7684\u884c\u88ab\u79f0\u4e3a\u5143\u7ec4\u3002<\/p>\n
VACUUM, VACUUM FULL, VACUUM ANALYZE: \u771f\u7a7a\uff0c\u5b8c\u6574\u6e05\u9664\uff0c\u5206\u6790\u6e05\u9664<\/h2>\n
\u5728\u4e2d\u56fd\u4eba\u7684\u6bcd\u8bed\u4e2d\uff0c\u4ee5\u4e0b\u662f Paraphrase \u7684\u9009\u9879\uff08\u4ec5\u9700\u4e00\u79cd\uff09\uff1a
\n\u5728\u6e05\u6d01\u65b9\u9762\uff0c\u6709\u4e09\u79cd\u9009\u9879\uff1aVACUUM\uff0cVACUUM FULL \u548c VACUUM ANALYZE\u3002<\/p>\n
\u901a\u5e38\u7684VACUUM\u64cd\u4f5c\u662f\u7531\u7528\u6237\u5177\u5907\u6e05\u7406\u6570\u636e\u5e93\u5185\u6240\u6709\u8868\u683c\u7684\u6743\u9650\u3002
\n\u8be5\u64cd\u4f5c\u901f\u5ea6\u5feb\uff0c\u4f46\u56de\u6536\u7684\u7a7a\u95f4\u5f88\u5c11\u8fd4\u56de\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n
\u53ea\u6709\u5728\u9700\u8981\u4ece\u8868\u4e2d\u56de\u6536\u5927\u91cf\u7a7a\u95f4\u7684\u60c5\u51b5\u4e0b\u624d\u5e94\u4f7f\u7528VACUUM FULL\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u5bf9\u8868\u8fdb\u884c\u72ec\u5360\u9501\u5b9a\uff0c\u5904\u7406\u65f6\u95f4\u8f83\u957f\uff0c\u4f46\u53ef\u4ee5\u5b9e\u73b0\u66f4\u5b8c\u5168\u7684\u6e05\u7406\u3002<\/p>\n
\u5728\u6267\u884cVACUUM\u540e\uff0c\u6267\u884cANALYZE\u547d\u4ee4\u6765\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u8868\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<\/p>\n
\u5438\u5c18\u5668<\/h2>\n
VACUUM \u30c6\u30fc\u30d6\u30eb\u540d;\r\n\r\n-- VERBOSE\u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u5b9f\u884c\u6642\u9593\u7b49\u306e\u8a73\u7d30\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\r\nVACUUM VERBOSE \u30c6\u30fc\u30d6\u30eb\u540d;\r\n<\/code><\/pre>\n
\u5b8c\u6574\u6e05\u7406<\/h2>\n
VACUUM FULL \u30c6\u30fc\u30d6\u30eb\u540d;\r\n<\/code><\/pre>\n
\u6570\u636e\u5e93\u7a7a\u95f4\u5206\u6790<\/h2>\n
VACUUM ANALYZE \u30c6\u30fc\u30d6\u30eb\u540d;\r\n<\/code><\/pre>\n
\u542c\u8bf4\u4e5f\u6709\u81ea\u52a8\u6e05\u6d01\u529f\u80fd\u7684\u673a\u5668\u3002<\/h2>\n
\u636e\u8bf4PostgreSQL\u6709\u4e00\u4e2a\u81ea\u52a8VACUUM\u7684\u529f\u80fd\u3002\u5177\u4f53\u7684\u5185\u5bb9\u8bf7\u770bPostGreSQL\u7684\u5b98\u65b9\u7f51\u7ad9\uff0c\u4f3c\u4e4e\u8fd8\u80fd\u8fdb\u884c\u5404\u79cd\u8c03\u6574\u3002\u867d\u7136\u53ef\u4ee5\u7701\u7565\u8be5\u529f\u80fd\uff0c\u4f46\u63a8\u8350\u5f3a\u70c8\u5efa\u8bae\u4f7f\u7528\u3002<\/p>\n
\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6587\u7ae0\u3002<\/h2>\n
    \n
  • \n
      https:\/\/postgresweb.com\/post-5194<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        https:\/\/qiita.com\/neustrashimy\/items\/b3d64b749582b32ad0ff<\/ul>\n","protected":false},"excerpt":{"rendered":"
        \u5438\u5c18\u5668\u7684\u610f\u601d\u662f \u516c\u5f0f\u6587\u4ef6\u94fe\u63a5\uff1ahttps:\/\/www.postgresql.jp\/document\/9.6\/h […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41437","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5173\u4e8ePostgreSQL\u7684VACUUM - 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\/\u5173\u4e8epostgresql\u7684vacuum\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5173\u4e8ePostgreSQL\u7684VACUUM\" \/>\n<meta property=\"og:description\" content=\"\u5438\u5c18\u5668\u7684\u610f\u601d\u662f \u516c\u5f0f\u6587\u4ef6\u94fe\u63a5\uff1ahttps:\/\/www.postgresql.jp\/document\/9.6\/h […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5173\u4e8epostgresql\u7684vacuum\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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