{"id":41589,"date":"2023-07-10T02:03:25","date_gmt":"2022-12-24T18:59:52","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86postgresql%e5%a4%87%e4%bb%bd%e5%92%8c%e6%81%a2%e5%a4%8d%e6%93%8d%e4%bd%9c%e5%ae%8c%e6%88%90\/"},"modified":"2024-04-30T12:47:45","modified_gmt":"2024-04-30T04:47:45","slug":"%e5%b0%86postgresql%e5%a4%87%e4%bb%bd%e5%92%8c%e6%81%a2%e5%a4%8d%e6%93%8d%e4%bd%9c%e5%ae%8c%e6%88%90","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86postgresql%e5%a4%87%e4%bb%bd%e5%92%8c%e6%81%a2%e5%a4%8d%e6%93%8d%e4%bd%9c%e5%ae%8c%e6%88%90\/","title":{"rendered":"\u5c06PostgreSQL\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u5b8c\u6210"},"content":{"rendered":"

\u7b80\u800c\u8a00\u4e4b<\/h2>\n

\u56e0\u4e3a\u6709\u65f6\u9700\u8981\u590d\u5236Postgres\u7684\u6570\u636e\uff0c\u6240\u4ee5\u5148\u7559\u4e0b\u5907\u5fd8\u5f55\u3002<\/p>\n

\u5783\u573e\u8f66 (l\u0101 j\u012b ch\u0113)<\/h2>\n

\u4e3a\u4e86\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684textsearch_ja\u7b49\u6269\u5c55\u529f\u80fd\uff0c\u672c\u6b21\u51b3\u5b9a\u5c06\u6570\u636e\u5e93\u7ed3\u6784\u548c\u6570\u636e\u5206\u522b\u8f6c\u50a8\u3002<\/p>\n

# \u30b9\u30ad\u30fc\u30de\uff08\u69cb\u9020\uff09<\/span>\r\n$ <\/span>pg_dump -U<\/span> hoge_admin -h<\/span> 127.0.0.1 -s<\/span> -p<\/span> 5432 --create<\/span> hoge_db ><\/span> ~\/schema.sql\r\n\r\n# \u30c7\u30fc\u30bf\u51fa\u529b<\/span>\r\n$ <\/span>pg_dump -U<\/span> hoge_admin -h<\/span> 127.0.0.1 -a<\/span> -p<\/span> 5432 hoge_db ><\/span> ~\/data.sql\r\n<\/code><\/pre>\n
\u6587\u4ef6\u4f20\u8f93<\/h2>\n
\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c06\u8f6c\u50a8\u6587\u4ef6\u4f20\u8f93\u5230\u76ee\u6807\u670d\u52a1\u5668\u3002<\/p>\n
$ <\/span>scp ~\/schema.sql hoge@[IP\u30a2\u30c9\u30ec\u30b9(<\/span>\u8ee2\u9001\u5148)]<\/span>:\/home\/hoge\/\r\n<\/code><\/pre>\n
\u6062\u590d<\/h2>\n
\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u6062\u590d\u3002<\/p>\n
# \u69cb\u9020\u4f5c\u6210\r\n$ psql -U hoge_admin -h 127.0.0.1 -d postgres -f schema.sql\r\n\r\n# \u30c7\u30fc\u30bf\u767b\u9332\r\n$ psql -U hoge_admin -h 127.0.0.1 hoge_db < data.sql\r\n<\/code><\/pre>\n
\u786e\u8ba4\u6570\u91cf<\/h2>\n
\u6211\u5011\u4f86\u78ba\u8a8d\u4e00\u4e0b\u5404\u500b\u8868\u7684\u8a18\u9304\u6578\u91cf\u3002<\/p>\n
SELECT<\/span>\r\n    t2<\/span>.<\/span>relname<\/span>,<\/span>\r\n    t2<\/span>.<\/span>reltuples<\/span>\r\nFROM<\/span>\r\n    pg_stat_user_tables<\/span> AS<\/span> t1<\/span>\r\nINNER<\/span> JOIN<\/span>\r\n    pg_class<\/span> AS<\/span> t2<\/span> ON<\/span> t1<\/span>.<\/span>relname<\/span> =<\/span> t2<\/span>.<\/span>relname<\/span>\r\nORDER<\/span> BY<\/span>\r\n    t2<\/span>.<\/span>relname<\/span>\r\n;<\/span>\r\n<\/code><\/pre>\n
\u67e5\u770b\u4ee5\u4e0b\u6587\u7ae0\u65f6\uff0c\u4e0e\u5b9e\u9645\u8868\u683c\u7684\u8bb0\u5f55\u6570\u76f8\u6bd4\uff0c\u6570\u91cf\u4e0d\u540c…<\/p>\n
\u5f53\u60f3\u8981\u5728PostgreSQL\u4e2d\u67e5\u770b\u6bcf\u4e2a\u6570\u636e\u8868\u7684\u8bb0\u5f55\u6570\u91cf\u65f6\uff0c<\/p>\n
\u3072\u3068\u3064\u6ce8\u610f\u3059\u3079\u304d\u70b9\u306f\u3001reltuples\u304c\r\nNumber of rows in the table. This is only an estimate used by the planner. It is updated by VACUUM, ANALYZE, and a few DDL commands such as CREATE INDEX\r\n\u3064\u307e\u308a\u3001\u300c\u3060\u3044\u305f\u3044\u306e\u6570\u5024\u3067\u3042\u3063\u3066\u6b63\u3057\u3044\u3068\u306f\u9650\u3089\u306a\u3044\u305c\u300d\u3063\u3066\u30c8\u30b3\u3002\r\n<\/code><\/pre>\n
\u770b\u6765\u7528\u8fd9\u4e2a\u65e0\u6cd5\u786e\u8ba4\u8f6c\u50a8\u662f\u5426\u6b63\u5e38\u8fdb\u884c\uff0c\u6709\u6ca1\u6709\u5176\u4ed6\u597d\u7684\u65b9\u6cd5\u5462…<\/p>\n
\uff1c\u65b9\u6cd5\uff11\uff1e\r\nselect count(*) from table_name;\r\n\r\n\uff1c\u65b9\u6cd5\uff12\uff1e\r\nselect relname as name, reltuples as rows from pg_class where relname ='table_name'\r\n\r\n\u203b\uff11\u3068\uff12\u3067\u4ef6\u6570\u304c\u7570\u306a\u308b\u5834\u5408\u306f\u3001\u53cd\u6620\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u614b\u306a\u306e\u3067\u3001\r\n\u300cvacuum table_name\u300d\u3067\u53cd\u6620\u3055\u305b\u308b\u3002\r\n<\/code><\/pre>\n
\u539f\u6765\u5982\u6b64\uff0c\u4f7f\u7528\u771f\u7a7a\u5438\u5c18\u5668\u5c31\u53ef\u4ee5\u9002\u5e94\u6570\u91cf\u4e86\u5417…<\/p>\n
vacuum<\/span> survey_responses<\/span>\r\n<\/code><\/pre>\n
\u6216\u8005\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\u751f\u6210\u67e5\u8be2\u4ee5\u83b7\u53d6\u6bcf\u4e2a\u8868\u7684\u8bb0\u5f55\u6570\u3002<\/p>\n
SELECT<\/span>\r\n  ARRAY_TO_STRING<\/span>(<\/span>\r\n    ARRAY<\/span>(<\/span>\r\n      SELECT<\/span>\r\n        (<\/span>'SELECT <\/span>''<\/span>'<\/span> ||<\/span> relname<\/span> ||<\/span> '<\/span>''<\/span> AS table, COUNT(*) AS rows FROM '<\/span> ||<\/span> relname<\/span>)<\/span> AS<\/span> query<\/span>\r\n      FROM<\/span>\r\n        pg_stat_user_tables<\/span>\r\n      ORDER<\/span> BY<\/span>\r\n        relname<\/span> ASC<\/span>\r\n    )<\/span>\r\n  ,<\/span> chr<\/span>(<\/span>10<\/span>)<\/span> ||<\/span>' UNION '<\/span> ||<\/span> chr<\/span>(<\/span>10<\/span>))<\/span>\r\n  ||<\/span> chr<\/span>(<\/span>10<\/span>)<\/span> ||<\/span> ';'<\/span>\r\n;<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8ff0\u67e5\u8be2\u7684\u6267\u884c\u7ed3\u679c<\/p>\n
SELECT 'hoge1' AS table, COUNT(*) AS rows FROM hoge1\r\n UNION \r\nSELECT 'hoge2' AS table, COUNT(*) AS rows FROM hoge2\r\n UNION \r\nSELECT 'hoge3' AS table, COUNT(*) AS rows FROM hoge3\r\n UNION \r\nSELECT 'hoge4' AS table, COUNT(*) AS rows FROM hoge4\r\n UNION \r\nSELECT 'hoge5' AS table, COUNT(*) AS rows FROM hoge5\r\n UNION \r\nSELECT 'hoge6' AS table, COUNT(*) AS rows FROM hoge6\r\n;\r\n<\/code><\/pre>\n
\u5982\u679c\u4f60\u5c1d\u8bd5\u590d\u5236\u7c98\u8d34\u6267\u884c\u8fd9\u4e2a\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n
\u4ee5\u4e0a\u3002 .)<\/p>\n
\u8bf7\u53c2\u8003\u4ee5\u4e0b\u7f51\u7ad9<\/h2>\n
    \n
  • \n
      PostgresSQL\u3067DB\u306e\u5168\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u4e00\u89a7\u3092\u78ba\u8a8d<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        SCP\u30b3\u30de\u30f3\u30c9\u3067\u30ed\u30fc\u30ab\u30eb\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30b5\u30fc\u30d0\u306b\u30a2\u30c3\u30d7\uff06\u30b5\u30fc\u30d0\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u3092DL<\/ul>\n","protected":false},"excerpt":{"rendered":"
        \u7b80\u800c\u8a00\u4e4b \u56e0\u4e3a\u6709\u65f6\u9700\u8981\u590d\u5236Postgres\u7684\u6570\u636e\uff0c\u6240\u4ee5\u5148\u7559\u4e0b\u5907\u5fd8\u5f55\u3002 \u5783\u573e\u8f66 (l\u0101 j\u012b ch\u0113) \u4e3a\u4e86\u5220\u9664 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41589","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5c06PostgreSQL\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u5b8c\u6210 - 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\/\u5c06postgresql\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u5b8c\u6210\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5c06PostgreSQL\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u5b8c\u6210\" \/>\n<meta property=\"og:description\" content=\"\u7b80\u800c\u8a00\u4e4b \u56e0\u4e3a\u6709\u65f6\u9700\u8981\u590d\u5236Postgres\u7684\u6570\u636e\uff0c\u6240\u4ee5\u5148\u7559\u4e0b\u5907\u5fd8\u5f55\u3002 \u5783\u573e\u8f66 (l\u0101 j\u012b ch\u0113) \u4e3a\u4e86\u5220\u9664 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5c06postgresql\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u5b8c\u6210\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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