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psql.md

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# psql学习笔记
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- [OpenResty-Postpresql库](https://github.com/leafo/pgmoon)
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- postpresql常用命令
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- su - postpres
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- \l show database access privileges
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- \q quit
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- su - postpres 进入系统用户
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- \l 列出所有数据库 或者: SELECT datname FROM pg_database;
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- \du 列出所有角色/用户 或者: SELECT rolname FROM pg_roles;
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- \q 退出数据库
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- \d 列出当前数据库里的所有表
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- \dt 列出当前数据库里的所有资料表
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- \c dbname 切换数据库
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- \dx 显示安装的插件
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- \x 切换横向竖向显示
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- show <参数名> 查看该参数的值

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