{"id":41526,"date":"2023-08-12T03:07:28","date_gmt":"2023-12-04T20:43:25","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql%ef%bc%9a%e5%ba%8f%e5%88%97%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-30T18:10:47","modified_gmt":"2024-04-30T10:10:47","slug":"postgresql%ef%bc%9a%e5%ba%8f%e5%88%97%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql%ef%bc%9a%e5%ba%8f%e5%88%97%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","title":{"rendered":"PostgreSQL\uff1a\u5e8f\u5217\u7684\u4f7f\u7528\u65b9\u6cd5"},"content":{"rendered":"<p>\u6211\u53c2\u8003\u4e86\u4e0b\u4e00\u9875\u3002<br \/>\n\u3010PostgreSQL\u3011\u521b\u5efa\u5e8f\u5217\uff08serial\uff09\uff0c\u5e76\u8bbe\u7f6e\u503c\u3002<\/p>\n<p>\u6211\u4eec\u5c06\u4f7f\u7528\u4e0b\u4e00\u4e2a\u6570\u636e\u5e93\u3002<\/p>\n<blockquote><p>\u7528\u6237\uff1ascott<br \/>\n\u5bc6\u7801\uff1atiger123<br \/>\n\u6570\u636e\u5e93\uff1adb_test<\/p><\/blockquote>\n<p>\u5236\u4f5c\u65b9\u6cd5<\/p>\n<pre class=\"post-pre\"><code>postgres=# CREATE ROLE scott login password 'tiger123';\r\nCREATE ROLE\r\npostgres=# create database db_test;\r\nCREATE DATABASE\r\npostgres=# alter database db_test owner to scott;\r\nALTER DATABASE\r\n<\/code><\/pre>\n<p>\u521d\u59cb\u72b6\u6001\u3002<\/p>\n<pre class=\"post-pre\"><code>$ psql -U scott db_test\r\npsql (15.2)\r\n\"help\"\u3067\u30d8\u30eb\u30d7\u3092\u8868\u793a\u3057\u307e\u3059\u3002\r\n\r\ndb_test=&gt; \\dt\r\n\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\r\ndb_test=&gt; \\d\r\n\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\r\n<\/code><\/pre>\n<p>\u5efa\u7acb\u4e00\u4e2a\u684c\u5b50<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; CREATE TABLE literature\r\n(\r\n        seq serial NOT NULL,  -- serial\u5217\r\n        title character(10),\r\n        CONSTRAINT pk_llx PRIMARY KEY (seq)\r\n);\r\nCREATE TABLE\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u65f6\u5019\u7684\u72b6\u6001 (Zh\u00e8 ge sh\u00ed de<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; \\dt\r\n             \u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u4e00\u89a7\r\n \u30b9\u30ad\u30fc\u30de |    \u540d\u524d    |  \u30bf\u30a4\u30d7  | \u6240\u6709\u8005 \r\n----------+------------+----------+--------\r\n public   | literature | \u30c6\u30fc\u30d6\u30eb | scott\r\n(1 \u884c)\r\n\r\ndb_test=&gt; \\d\r\n                  \u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u4e00\u89a7\r\n \u30b9\u30ad\u30fc\u30de |        \u540d\u524d        |   \u30bf\u30a4\u30d7   | \u6240\u6709\u8005 \r\n----------+--------------------+------------+--------\r\n public   | literature         | \u30c6\u30fc\u30d6\u30eb   | scott\r\n public   | literature_seq_seq | \u30b7\u30fc\u30b1\u30f3\u30b9 | scott\r\n(2 \u884c)\r\n<\/code><\/pre>\n<p>\u6570\u636e\u7684\u63d2\u5165<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; insert into literature(title) values('\u574a\u3063\u3061\u3083\u3093');\r\ninsert into literature(title) values('\u8349\u6795');\r\ninsert into literature(title) values('\u305d\u308c\u304b\u3089');\r\ninsert into literature(title) values('\u4e09\u56db\u90ce');\r\nINSERT 0 1\r\nINSERT 0 1\r\nINSERT 0 1\r\nINSERT 0 1\r\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u60c5\u51b5\u4e0b\u7684\u72b6\u6001<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select * from literature;\r\n seq |      title      \r\n-----+-----------------\r\n   1 | \u574a\u3063\u3061\u3083\u3093     \r\n   2 | \u8349\u6795        \r\n   3 | \u305d\u308c\u304b\u3089      \r\n   4 | \u4e09\u56db\u90ce       \r\n(4 \u884c)\r\n\r\ndb_test=&gt; select * from literature_seq_seq;\r\n last_value | log_cnt | is_called \r\n------------+---------+-----------\r\n          4 |      29 | t\r\n(1 \u884c)\r\n<\/code><\/pre>\n<p>\u83b7\u53d6\u5e8f\u5217\u7684\u503c<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select sequencename,last_value from pg_sequences;\r\n    sequencename    | last_value \r\n--------------------+------------\r\n literature_seq_seq |          4\r\n(1 \u884c)\r\n<\/code><\/pre>\n<p>\u9650\u5b9a\u7279\u5b9a\u987a\u5e8f\u5e76\u83b7\u53d6\u5e8f\u5217\u503c<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select sequencename,last_value from pg_sequences where sequencename = 'literature_seq_seq';\r\n    sequencename    | last_value \r\n--------------------+------------\r\n literature_seq_seq |          4\r\n(1 \u884c)\r\n<\/code><\/pre>\n<p>\u66f4\u6539\u5e8f\u5217\u7684\u503c<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; SELECT setval('literature_seq_seq',10);\r\n setval \r\n--------\r\n     10\r\n(1 \u884c)\r\n<\/code><\/pre>\n<p>\u5e8f\u5217\u7684\u503c<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select sequencename,last_value from pg_sequences;\r\n    sequencename    | last_value \r\n--------------------+------------\r\n literature_seq_seq |         10\r\n(1 \u884c)\r\n<\/code><\/pre>\n<p>\u63d2\u5165\u6570\u636e<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; insert into literature(title) values('\u3053\u3053\u308d');\r\ninsert into literature(title) values('\u660e\u6697');\r\nINSERT 0 1\r\nINSERT 0 1\r\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u72b6\u6001<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select * from literature;\r\n seq |      title      \r\n-----+-----------------\r\n   1 | \u574a\u3063\u3061\u3083\u3093     \r\n   2 | \u8349\u6795        \r\n   3 | \u305d\u308c\u304b\u3089      \r\n   4 | \u4e09\u56db\u90ce       \r\n  11 | \u3053\u3053\u308d       \r\n  12 | \u660e\u6697        \r\n(6 \u884c)\r\n<\/code><\/pre>\n<p>\u5e8f\u5217\u7684\u503c<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select sequencename,last_value from pg_sequences;\r\n    sequencename    | last_value \r\n--------------------+------------\r\n literature_seq_seq |         12\r\n(1 \u884c)\r\n<\/code><\/pre>\n<h2>\u8bf7\u6ce8\u610f<\/h2>\n<p>\u5728PostgreSQL 9.2.24\u7248\u672c\u4e2d\uff0c\u65e0\u6cd5\u4f7f\u7528pg_sequences\u3002<br \/>\n\u60a8\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528\u5176\u4ed6\u9009\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code>db_test=&gt; select last_value from literature_seq_seq;\r\n last_value \r\n------------\r\n          4\r\n(1 \u884c)\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u53c2\u8003\u4e86\u4e0b\u4e00\u9875\u3002 \u3010PostgreSQL\u3011\u521b\u5efa\u5e8f\u5217\uff08serial\uff09\uff0c\u5e76\u8bbe\u7f6e\u503c\u3002 \u6211\u4eec\u5c06\u4f7f\u7528\u4e0b\u4e00\u4e2a\u6570\u636e\u5e93\u3002 \u7528\u6237 [&hellip;]<\/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-41526","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>PostgreSQL\uff1a\u5e8f\u5217\u7684\u4f7f\u7528\u65b9\u6cd5 - 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\/postgresql\uff1a\u5e8f\u5217\u7684\u4f7f\u7528\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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