69 lines
1.4 KiB
Markdown
69 lines
1.4 KiB
Markdown
操作用户
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```
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su - openGauss
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```
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登录
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```
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gsql -d postgres -p 15000
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```
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- 用户和数据库状态一键查询脚本
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```
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SELECT
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u.usename as "用户名",
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d.datname as "数据库名",
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CASE WHEN d.datdba = u.usesysid THEN '所有者' ELSE '使用者' END as "关系类型",
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CASE WHEN u.usesysid = (SELECT datdba FROM pg_database WHERE datname = d.datname)
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THEN '是' ELSE '否' END as "是否为所有者",
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has_database_privilege(u.usename, d.datname, 'CONNECT') as "连接权限",
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has_database_privilege(u.usename, d.datname, 'CREATE') as "创建表权限"
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FROM pg_user u
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CROSS JOIN pg_database d
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WHERE d.datname NOT LIKE 'template%'
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ORDER BY u.usename, d.datname;
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```
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查看当前用户权限
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```
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SELECT
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rolname,
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rolcreatedb,
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rolsuper
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FROM pg_roles
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WHERE rolname = current_user;
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```
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- 创建用户
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```
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CREATE USER future WITH PASSWORD 'FutureV587?'
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SYSADMIN -- 授予系统管理员权限
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CREATEDB -- 授予创建数据库的权限
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CONNECTION LIMIT 100; -- 限制最大连接数为100
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```
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- 创建数据库
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```
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CREATE DATABASE futrue
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WITH
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OWNER = future -- 指定所有者为 omm
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ENCODING = 'UTF8' -- 设置编码
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LC_COLLATE = 'en_US.UTF-8' -- 排序规则
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LC_CTYPE = 'en_US.UTF-8' -- 字符分类
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CONNECTION LIMIT = -1; -- 连接数限制（-1表示无限制）
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```
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退出
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```
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\q
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```
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