--给管理员角色赋予权限： grant all privileges on readers to admin grant all privileges on books to admin grant select on rb to admin这个赋予权限出现错误应该怎么解决

这个错误可能是由于 rb 表不存在而导致的，因为在语句中出现了 rb 表，但并未在语句中创建。

如果您确定 rb 表已经存在，可以尝试使用以下语句授权：

grant all privileges on readers to admin;
grant all privileges on books to admin;
grant select on rb to admin;

如果 rb 表不存在，您需要先使用 CREATE TABLE 语句创建 rb 表，例如：

create table rb (
  id int primary key,
  reader_id int,
  book_id int,
  borrow_date datetime,
  return_date datetime
);

然后再使用授权语句进行授权。

相关问题

hive执行GRANT ALL PRIVILEGES ON *.* TO <admin_user> WITH GRANT OPTION;

在 Hive 中，GRANT 语句用于授予用户对指定数据库或表的权限。与 MySQL 不同的是，Hive 不支持在 GRANT 语句中使用 *.* 来授予所有数据库和表的权限，因此你需要指定具体的数据库和表。

以下是一个授予用户在所有数据库和表上拥有所有权限的示例 Hive GRANT 语句：

GRANT ALL PRIVILEGES ON DATABASE <database_name> TO <admin_user> WITH GRANT OPTION;

如果你想授予对特定表的权限，可以使用以下语法：

GRANT <permission> ON TABLE <table_name> TO <user>[, <user2>, ...] [WITH GRANT OPTION];

其中，<permission> 可以是 SELECT、INSERT、UPDATE、DELETE 或 ALL，代表不同的操作权限。在 WITH GRANT OPTION 选项的帮助下，你可以允许被授权的用户将这些权限授予其他用户。

CREATE USER cedar IDENTIFIED BY cedar DEFAULT TABLESPACE CEDAR_DATA TEMPORARY TABLESPACE TEMP PROFILE DEFAULT ACCOUNT UNLOCK; -- 5 Roles for cedar GRANT DBA TO cedar; GRANT RESOURCE TO cedar WITH ADMIN OPTION; GRANT AQ_ADMINISTRATOR_ROLE TO cedar; GRANT CONNECT TO cedar WITH ADMIN OPTION; GRANT AQ_USER_ROLE TO cedar; ALTER USER cedar DEFAULT ROLE ALL; -- 44 System Privileges for cedar GRANT CREATE ANY DIRECTORY TO cedar WITH ADMIN OPTION; GRANT CREATE PUBLIC SYNONYM TO cedar WITH ADMIN OPTION; GRANT EXECUTE ANY CLASS TO cedar WITH ADMIN OPTION; GRANT DROP ANY VIEW TO cedar WITH ADMIN OPTION; GRANT CREATE CLUSTER TO cedar; GRANT ALTER SYSTEM TO cedar; GRANT UPDATE ANY TABLE TO cedar; GRANT INSERT ANY TABLE TO cedar; GRANT LOCK ANY TABLE TO cedar; GRANT CREATE EXTERNAL JOB TO cedar WITH ADMIN OPTION; GRANT EXECUTE ANY PROGRAM TO cedar WITH ADMIN OPTION; GRANT CREATE JOB TO cedar WITH ADMIN OPTION; GRANT DROP ANY DIRECTORY TO cedar WITH ADMIN OPTION; GRANT ALTER ANY TRIGGER TO cedar; GRANT CREATE DATABASE LINK TO cedar; GRANT DROP ANY TABLE TO cedar WITH ADMIN OPTION; GRANT CREATE TABLE TO cedar WITH ADMIN OPTION; GRANT QUERY REWRITE TO cedar; GRANT ANALYZE ANY TO cedar; GRANT DROP ANY TRIGGER TO cedar; GRANT EXECUTE ANY PROCEDURE TO cedar; GRANT SELECT ANY TABLE TO cedar WITH ADMIN OPTION; GRANT ALTER ANY TABLE TO cedar; GRANT UNLIMITED TABLESPACE TO cedar WITH ADMIN OPTION; GRANT CREATE SESSION TO cedar; GRANT CREATE ANY TRIGGER TO cedar; GRANT DROP ANY PROCEDURE TO cedar WITH ADMIN OPTION; GRANT ALTER ANY PROCEDURE TO cedar; GRANT DROP PUBLIC SYNONYM TO cedar WITH ADMIN OPTION; GRANT DROP ANY SYNONYM TO cedar WITH ADMIN OPTION; GRANT MANAGE SCHEDULER TO cedar WITH ADMIN OPTION; GRANT CREATE ANY PROCEDURE TO cedar; GRANT CREATE PROCEDURE TO cedar WITH ADMIN OPTION; GRANT CREATE SEQUENCE TO cedar; GRANT CREATE VIEW TO cedar WITH ADMIN OPTION; GRANT CREATE SYNONYM TO cedar; GRANT DROP ANY INDEX TO cedar; GRANT DELETE ANY TABLE TO cedar; GRANT CREATE ANY TABLE TO cedar; GRANT CREATE ANY JOB TO cedar WITH ADMIN OPTION; GRANT SELECT ANY DICTIONARY TO cedar WITH ADMIN OPTION; GRANT CREATE ROLE TO cedar; GRANT CREATE ANY SYNONYM TO cedar WITH ADMIN OPTION; GRANT ALTER SESSION TO cedar WITH ADMIN OPTION; GRANT EXECUTE ON sys.dbms_aq TO cedar; GRANT EXECUTE ON sys.dbms_aqadm TO cedar; GRANT EXECUTE ON sys.dbms_network_acl_admin TO cedar; GRANT ALL ON sys.DBMS_LOCK TO cedar; 这个SQL在oracle 能用吗

这个 SQL 语句应该是可以在 Oracle 环境中执行的。它的作用是创建一个名为 cedar 的用户，并指定了该用户的默认表空间、临时表空间、角色和权限等信息。其中，该用户被授予了 DBA、RESOURCE、AQ_ADMINISTRATOR_ROLE、CONNECT、AQ_USER_ROLE 等角色，也被授予了 44 个系统权限（如 CREATE ANY DIRECTORY、EXECUTE ANY CLASS、CREATE TABLE 等）。此外，该用户还被授予了一些特殊的权限，如 EXECUTE ON sys.dbms_aq、EXECUTE ON sys.dbms_aqadm、EXECUTE ON sys.dbms_network_acl_admin 等。这些权限和角色的授予将使得该用户具有较高的系统权限，需要谨慎使用。