用户&权限

 

创建某个库用户： create user admin with password 'chengce243'; create database mydb with encoding='utf8' owner=admin; GRANT ALL PRIVILEGES ON DATABASE mydb TO admin;   创建一个超级用户 create user dbaadmin superuser;   修改用户名 alter user tuser to testuser;   修改用户密码 alter user testuser password 'test'; 或者： alter user testuser with password 'chengce243';   修改用户为超级用户 alter user testuser superuser;   将超级用户修改为普通用户 alter user testuser nosuperuser;   锁定/解锁用户,不允许/允许其登录 alter user testuser nologin; alter user testuser login;   修改数据库所属用户 alter database database_name OWNER TO new_user;   设置用户的连接数,其中0表示不允许登录,-1表示无限制 alter user test connection limit 10;   直接删除用户 drop user testuser;   如果用户在数据库中有相关对象,不能直接删除,需要将相关对象所属修改到其它用户中 test=# drop user testuser; ERROR: role "testuser" cannot be dropped because some objects depend on it DETAIL: owner of table zzz.kkk privileges for schema zzz   将testuser的所属用户修改为test:   test=# reassign owned by testuser to test; REASSIGN OWNED 还需要把权限进行收回,再进行删除:   test=# revoke all on schema zzz from testuser; REVOKE test=# drop user testuser; DROP ROLE   创建一个schema,并且设置所属用户为 testuser: create schema zzz authorization testuser;   删除schema,如果schema中存在对象,则需要使用cascade选项:  test=# drop schema zzz; ERROR: cannot drop schema zzz because other objects depend on it DETAIL: table zzz.test depends on schema zzz HINT: Use DROP ... CASCADE to drop the dependent objects too. test=# drop schema zzz cascade; NOTICE: drop cascades to table zzz.test DROP SCHEMA        

标签：schema,zzz,用户,user,test,权限,alter,testuser
来源： https://www.cnblogs.com/liang545621/p/12605779.html