使用CREATE ROLE 或CREATE USER 命令来创建一个新的用户账号。例如,要创建一个名为 readonly_user 的用户,并设置其密码为 password123,可以使用以下命令: sql CREATE ROLE readonly_user WITH LOGIN PASSWORD 'password123'; 或者,如果你希望用户具有更多的角色属性(例如,不能创建数据库或角色),可以使用更详细的...
create user readonlyuser with password 'R3333333341'; grant select on all tables in schema public to readonlyuser; 单表授权 GRANT SELECT ON tablename to readonlyuser
postgres=#createuserreadonlywithpassword'123456';CREATEROLE--设置用户默认事务只读postgres=#alteruserreadonlysetdefault_transaction_read_only=on;ALTERROLE--赋予用户连接数据库权限postgres=#grantconnectondatabase postgrestoreadonly;GRANT--赋予schema,序列,表查看权限postgres=#grantusageonschema publictoreadonly;...
其格式为:格式: create user 用户 名 identified by 密码 default tablespace 表空间表; 如: SQL> create user testone identified by testone default tablespace test_tablespace; 默认表空间’default tablespace’使用上面创建的表空间。 4.接着授权给新建的用户: SQL> grant connect,resource to testone; –表示...
Step 1: Create a dedicated read-only Postgres user These steps create a dedicated read-only user for replicating data. Alternatively, you can use an existing Postgres user in your database. The following commands will create a new user: CREATE USER <user_name> PASSWORD 'your_password_...
发现createtest2 可以看到createtest1 所建的表,而createtest1也可以看到createtest2所建的表。...这次为了区分权限,Fayson只将test.test2 表的查看权限赋予createtest2 角色,切换到hive 用户后执行如下命令 grant SELECT on data...
(Remove Schema)。呵呵,和现实也太相似了吧。我(仓库的管理员)还可以给User分配具体的权限,也就是他到某一个房间能做些什么,是只能看(Read-Only),还是可以 像主人一样有所有的控制权(R/W),这个就要看这个User所对应的角色Role了,至于分配权限的问题,我留在以后单独的blog中详述。比喻到这里,相信大家都清楚了...
比如要对已有的 todos 表加一个字段 created_at，我需要创建一个新的迁移文件，撰写类似如下的代码：
The first component in the schema search_path is $user, by default One advantage of the setup in Postgres is that a user can create multiple schemas without creating separate users and grant permissions to others for creating objects in those schemas. What are the Oracle t...
On each call, we create a new output tape to hold the next * run, until maxTapes is reached. After that, we assign new runs to the * existing tapes in a round robin fashion. */ if (state->nOutputTapes < state->maxTapes) { /* Create a new tape to hold the next run */ ...