{"id":41355,"date":"2023-11-16T07:46:04","date_gmt":"2024-01-15T03:03:03","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bc%80%e5%a7%8b%e4%bd%bf%e7%94%a8-postgresql\/"},"modified":"2024-05-04T09:19:07","modified_gmt":"2024-05-04T01:19:07","slug":"%e5%bc%80%e5%a7%8b%e4%bd%bf%e7%94%a8-postgresql","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bc%80%e5%a7%8b%e4%bd%bf%e7%94%a8-postgresql\/","title":{"rendered":"\u5f00\u59cb\u4f7f\u7528 PostgreSQL"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u7531\u4e8e\u66fe\u7ecf\u4f7f\u7528\u8fc7PostgreSQL\uff0c\u73b0\u5728\u5c06\u5176\u4f7f\u7528\u65b9\u6cd5\u6574\u7406\u4e3a\u5907\u5fd8\u5f55\u3002\u5c06\u7528\u8fc7\u7684\u547d\u4ee4\u90fd\u4e00\u4e00\u7f57\u5217\u51fa\u6765\u3002<\/p>\n<h1>\u5b89\u88c5<\/h1>\n<p>\u5728WSL2\u4e0a\u5b89\u88c5\u975e\u5e38\u7b80\u5355\u3002\u53ea\u9700\u4f7f\u7528apt\u547d\u4ee4\u5373\u53ef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">sudo <\/span>apt <span class=\"nt\">-y<\/span> update \r\n<span class=\"nv\">$ <\/span><span class=\"nb\">sudo <\/span>apt <span class=\"nt\">-y<\/span> <span class=\"nb\">install <\/span>postgresql postgresql-contrib\r\n<\/code><\/pre>\n<h1>\u767b\u5f55\u5230 PostgreSQL \u6570\u636e\u5e93<\/h1>\n<p>\u751f\u6210\u4e86\u4e00\u4e2a\u540d\u4e3apostgres\u7684\u7528\u6237\uff0c\u767b\u5f55\u8be5\u7528\u6237\u540e\u8fdb\u5165PostgreSQL\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">sudo<\/span> <span class=\"nt\">-i<\/span> <span class=\"nt\">-u<\/span> postgres\r\npostgres:~<span class=\"nv\">$ <\/span>psql\r\npsql <span class=\"o\">(<\/span>13.3 <span class=\"o\">(<\/span>Ubuntu 13.3-1.pgdg20.04+1<span class=\"o\">)<\/span>, server 12.6 <span class=\"o\">(<\/span>Ubuntu 12.6-0ubuntu0.20.04.1<span class=\"o\">))<\/span>\r\nType <span class=\"s2\">\"help\"<\/span> <span class=\"k\">for <\/span>help.\r\n\r\n<span class=\"nv\">postgres<\/span><span class=\"o\">=<\/span><span class=\"c\">#<\/span>\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528\u7684\u547d\u4ee4<\/h1>\n<p>\u7531\u4e8e\u5f00\u53d1\u9700\u8981\uff0c\u5728\u53e6\u5916\u7684\u5de5\u5177\u4e2d\u5df2\u7ecf\u6062\u590d\u4e86\u6570\u636e\u5e93\uff0c\u56e0\u6b64\u5c06\u5bf9\u73b0\u6709\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u547d\u4ee4\u6574\u5408\u5728\u4e00\u8d77\u3002<\/p>\n<ul class=\"post-ul\">DB\u4e00\u89a7\u306e\u78ba\u8a8d<\/ul>\n<pre class=\"post-pre\"><code>\\l\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>postgres=# \\l\r\n                               List of databases\r\n     Name     |  Owner   | Encoding | Collate |  Ctype  |   Access privileges\r\n--------------+----------+----------+---------+---------+-----------------------\r\n postgres     | postgres | UTF8     | C.UTF-8 | C.UTF-8 |\r\n template0    | postgres | UTF8     | C.UTF-8 | C.UTF-8 | =c\/postgres          +\r\n              |          |          |         |         | postgres=CTc\/postgres\r\n template1    | postgres | UTF8     | C.UTF-8 | C.UTF-8 | =c\/postgres          +\r\n              |          |          |         |         | postgres=CTc\/postgres\r\n(3 rows)\r\n<\/code><\/pre>\n<ul class=\"post-ul\">DB\u3078\u306e\u63a5\u7d9a<\/ul>\n<pre class=\"post-pre\"><code>\\c {DB\u540d}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>postgres=# \\c postgres\r\npsql (13.3 (Ubuntu 13.3-1.pgdg20.04+1), server 12.6 (Ubuntu 12.6-0ubuntu0.20.04.1))\r\nYou are now connected to database \"postgres\" as user \"postgres\".\r\n<\/code><\/pre>\n<ul class=\"post-ul\">schema \u4e00\u89a7<\/ul>\n<pre class=\"post-pre\"><code>\\dn\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>postgres=# \\dn\r\n    List of schemas\r\n    Name     |  Owner\r\n-------------+----------\r\n public      | postgres\r\n(1 row)\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u8fc7\u7684\u547d\u4ee4\uff0c\u4f46\u5185\u5bb9\u65e0\u6cd5\u8f6c\u5316\u4e3a\u6587\u7ae0\u3002<\/p>\n<ul class=\"post-ul\">\u3042\u308b schema \u306e\u30c6\u30fc\u30d6\u30eb\u306e\u4e2d\u8eab\u3092\u51fa\u529b<\/ul>\n<pre class=\"post-pre\"><code>SELECT * FROM {schema\u540d}.{table\u540d};\r\n<\/code><\/pre>\n<ul class=\"post-ul\">schema \u306e\u524a\u9664\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u3066\u3082\u5f37\u5236\u524a\u9664\u3059\u308b\uff09<\/ul>\n<pre class=\"post-pre\"><code>DROP SCHEMA {schema\u540d} CASCADE;\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u30c6\u30fc\u30d6\u30eb\u306b\u542b\u307e\u308c\u308b\u30ab\u30e9\u30e0\u306e\u4e00\u89a7\u3092\u53d6\u5f97<\/ul>\n<pre class=\"post-pre\"><code>\\d {schema\u540d}.{table\u540d}\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u65e5\u4ed8\u30ab\u30e9\u30e0\uff08date\uff09\u304c\u3042\u308b\u5834\u5408\u306b\u6700\u65b0\u306e\u30c7\u30fc\u30bf\u306e\u53d6\u5f97<\/ul>\n<pre class=\"post-pre\"><code>SELECT {column\u540d}, MAX({date\u540d}) FROM {schema\u540d}.{table\u540d} GROUP BY {column\u540d};\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u65e5\u4ed8\u30ab\u30e9\u30e0\uff08date\uff09\u304c\u3042\u308b\u5834\u5408\u306b\u6700\u65b0\u306e\u5168column\u306e\u30c7\u30fc\u30bf\u306e\u53d6\u5f97<\/ul>\n<pre class=\"post-pre\"><code>SELECT * FROM {schema\u540d}.{table\u540d} AS t1\r\nwhere {date\u540d}=(\r\nselect max({date\u540d}) from {schema\u540d}.{table\u540d}\r\nwhere {column\u540d}=t1.{column\u540d}\r\n)\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u65e5\u4ed8\u30ab\u30e9\u30e0\uff08date\uff09\u304c\u3042\u308b\u5834\u5408\u306b\u6700\u65b010\u4ef6\u306e\u5168column\u306e\u30c7\u30fc\u30bf\u306e\u53d6\u5f97<\/ul>\n<pre class=\"post-pre\"><code>SELECT * FROM (SELECT * FROM {schema\u540d}.{table\u540d} ORDER BY {date\u540d} DESC LIMIT 10) AS a ORDER BY {date\u540d};\r\n<\/code><\/pre>\n<h1>\u6700\u540e<\/h1>\n<p>\u8003\u8651\u5230\u5904\u7406\u6570\u636e\u5e93\u65f6\u9700\u8981\u8bb0\u4f4f\u5f88\u591a\u4e1c\u897f\uff0c\u6240\u4ee5\u6211\u5e0c\u671b\u53ef\u4ee5\u6309\u7167\u5b66\u4e60\u7684\u987a\u5e8f\u5c06\u5176\u8bb0\u5f55\u6210\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u7531\u4e8e\u66fe\u7ecf\u4f7f\u7528\u8fc7PostgreSQL\uff0c\u73b0\u5728\u5c06\u5176\u4f7f\u7528\u65b9\u6cd5\u6574\u7406\u4e3a\u5907\u5fd8\u5f55\u3002\u5c06\u7528\u8fc7\u7684\u547d\u4ee4\u90fd\u4e00\u4e00\u7f57\u5217\u51fa\u6765\u3002 \u5b89\u88c5 \u5728 [&hellip;]<\/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-41355","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\u4f7f\u7528 PostgreSQL - 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\u4f7f\u7528-postgresql\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f00\u59cb\u4f7f\u7528 PostgreSQL\" \/>\n<meta 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