Postgresql有哪些常用命令-创新互联
本篇内容介绍了“Postgresql有哪些常用命令”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
成都创新互联公司坚持“要么做到,要么别承诺”的工作理念,服务领域包括:成都网站建设、成都做网站、企业官网、英文网站、手机端网站、网站推广等服务,满足客户于互联网时代的达孜网站设计、移动媒体设计的需求,帮助企业找到有效的互联网解决方案。努力成为您成熟可靠的网络建设合作伙伴!--设置模式 set search_path to firsoul; --默认只列出当前模式下的表 \d --列出常用模式 \dn --列出所有模式 \dnS --查看表的大小 select pg_size_pretty(pg_relation_size('test')); --or \dt+ test --info SELECT n.nspname as "Schema", c.relname as "Name", CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'table' END as "Type", pg_catalog.pg_get_userbyid(c.relowner) as "Owner", pg_catalog.pg_size_pretty(pg_catalog.pg_table_size(c.oid)) as "Size", pg_catalog.obj_description(c.oid, 'pg_class') as "Description" FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN ('r','p','s','') AND n.nspname !~ '^pg_toast' AND c.relname OPERATOR(pg_catalog.~) '^(test)$' AND pg_catalog.pg_table_is_visible(c.oid) ORDER BY 1,2; --查看模式大小,表,索引 select schemaname ,round(sum(pg_total_relation_size(schemaname||'.'||tablename))/1024/1024) "Size_MB" from pg_tables where schemaname='public' group by 1; select schemaname ,round(sum(pg_total_relation_size(schemaname||'.'||tablename))/1024/1024) "Size_MB" from pg_tables where schemaname='public' group by 1; select schemaname ,round(sum(pg_total_relation_size(schemaname||'.'||indexname))/1024/1024) "Size_MB" from pg_indexes where schemaname='public' group by 1; --查询数据库大小 select datname,pg_size_pretty(pg_database_size(datname)) from pg_database;
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