Table Permission Management

Operation Scenario

You can isolate databases allocated to different users by setting permissions to ensure data query performance.
The administrator and database owner have all permissions, which cannot be set or modified by other users.
When setting database permissions for a new user, ensure that the user group to which the user belongs has the Tenant Guest permission.

Viewing Table Permissions

On the left of the management console, choose Data Management > Databases and Tables.
Click the database name in the table whose authority is to be set. The Table Management page of the database is displayed.
Locate the row where the target table resides and click Manage Permissions in the Operation column.
Permissions can be granted to new users or projects, modified for users or projects with existing permissions, or revoked from a user or project.

Granting Permissions to a New User or a Project

Here, the new user or project refers to a user or a project that does not have permissions on the database.

Click the table you need. In the displayed table permissions page, click Grant Permission in the upper right corner.

In the displayed Grant Permission dialog box, select the required permissions.

For details about the DLI table permissions, see Table 1.

**Table 1** Parameter description
Parameter	Description
Authorization Object	Select User or Project.
Username/Project Name	If you select User, enter the IAM username when granting table permissions to the user. NOTE: The username is an existing IAM user name and has logged in to the DLI management console. If you select Project, select the project to be authorized in the current region. NOTE: If you select Project, you can only view information about the authorized tables and their databases.
Non-inheritable Permissions	Select a permission to grant it to the user, or deselect a permission to revoke it. The following permissions are applicable to both user and project authorization: Select Table: This permission allows you to query data of the current table. View Table Information: This permission allows you to view information about the current table. View Table Creation Statement: This permission allows you to view the statement for creating the current table. Drop Table: This permission allows you to delete the current table. Rename Table: Rename the current table. Insert: This permission allows you to insert data into the current table. Overwrite: This permission allows you to insert data to overwrite the data in the current table. Add Column: Add columns to the current table. Grant Permission: The current user can grant table permissions to other users. Revoke Permission: The current user can revoke the table's permissions that other users have but cannot revoke the table owner's permissions. View Other Users' Permissions: This permission allows you to query other users' permission on the current table. The partition table also has the following permissions: Delete Partition: This permission allows you to delete existing partitions from a partition table. View All Partitions: This permission allows you to view all partitions in a partition table. The following permissions can only be granted to users: View Table: This permission allows you to display the current table.
Column Permissions	Only the query permission on table columns can be inherited. If you select a column name, you have the permission to query the corresponding column. If Query Table is selected in Non-inherited Permissions, the Column Permissions is automatically hidden.

For details about the OBS table permissions, see Table 2.

**Table 2** Parameter description
Parameter	Description
Authorization Object	Select User or Project.
Username/Project Name	If you select User, enter the IAM username when granting table permissions to the user. NOTE: The username is an existing IAM user name and has logged in to the DLI management console. If you select Project, select the project to be authorized in the current region. NOTE: If you select Project, you can only view information about the authorized tables and their databases.
Non-inheritable Permissions	Select a permission to grant it to the user, or deselect a permission to revoke it. The following permissions are applicable to both user and project authorization: View Table Creation Statement: This permission allows you to view the statement for creating the current table. View Table Information: This permission allows you to view information about the current table. Select Table: This permission allows you to query data of the current table. Drop Table: This permission allows you to delete the current table. Rename Table: Rename the current table. Insert: This permission allows you to insert data into the current table. Overwrite: This permission allows you to insert data to overwrite the data in the current table. Add Column: This permission allows you to add columns to the current table. Grant Permission: This permission allows you to grant table permissions to other users or projects. Revoke Permission: This permission allows you to revoke the table's permissions that other users or projects have but cannot revoke the table owner's permissions. View Other Users' Permissions: This permission allows you to query other users' permission on the current table. The partition table also has the following permissions: Add Partition: This permission allows you to add a partition to a partition table. Delete Partition: This permission allows you to delete existing partitions from a partition table. Configure Path for Partition: This permission allows you to set the path of a partition in a partition table to a specified OBS path. Rename Table Partition: This permission allows you to rename partitions in a partition table. Restore Table Partition: This permission allows you to export partition information from the file system and save the information to metadata. View All Partitions: This permission allows you to view all partitions in a partition table. The following permissions can only be granted to users: View Table: This permission allows you to view the current table.
Column permissions	Only the query permission on table columns can be inherited. If you select a column name, you have the permission to query the corresponding column. If Query Table is selected in Non-inherited Permissions, the Column Permissions is automatically hidden.

For details about the view permissions, see Table 3.

A view can be created only by using SQL statements. You cannot create a view on the Create Table page.

**Table 3** Parameter description
Parameter	Description
Authorization Object	Select User or Project.
Username/Project Name	If you select User, enter the IAM username when adding a user to the database. NOTE: The username is an existing IAM user name and has logged in to the DLI management console. If you select Project, select the project to be authorized in the current region. NOTE: If you select Project, you can only view information about the authorized tables and their databases.
Non-inheritable Permissions	Select a permission to grant it to the user, or deselect a permission to revoke it. The following permissions are applicable to both user and project authorization: View Table Information: This permission allows you to view information about the current table. View Table Creation Statement: This permission allows you to view the statement for creating the current table. Drop Table: This permission allows you to delete the current table. Select Table: This permission allows you to query data of the current table. Rename Table: Rename the current table. Grant Permission: The current user or project can grant table permissions to other users or projects. Revoke Permission: The current user or project can revoke the table's permissions that other users or projects have but cannot revoke the table owner's permissions. View Other Users' Permissions: This permission allows you to query other users' permission on the current table. Only applicable to View Table: This permission allows you to view the current table.

Click OK.

Modifying Permissions for an Existing User or Project

For a user or project that has some permissions on the database, you can revoke the existing permissions or grant new ones.

If all options under Set Permission are gray, you are not allowed to change permissions on this table. You can apply to the administrator, table owner, or other authorized users for granting and revoking table permissions.

In the User Permission Info list, find the user whose permission needs to be set.
- If the user is a sub-user and is not the owner of the table, you can set permissions.
- If the user is an administrator or table owner, you can only view permissions.
In the Project Permission Info list, locate the project for which you want to set permissions and click Set Permission.
In the Operation column of the sub-user or project, click Set Permission. The Set Permission dialog box is displayed.
- For details about DLI table user or project permissions, see Table 1.
- For details about OBS table user or project permissions, see Table 2.
- For details about View table user or project permissions, see Table 3.
Click OK.

Revoking All Permissions of a User or Project

Revoke all permissions of a user or a project.

In the user list under User Permission Info, locate the row where the target sub-user resides and click Revoke Permission in the Operation column. In the displayed dialog box, click OK. In this case, the user has no permissions on the table.
In the following cases, Revoke Permission is gray, indicating that the permission of the user cannot be revoked.
- The user is an administrator.
- The sub-user is the owner of the table.
- The sub-user has only inheritable permissions.
In the Project Permission Info area, select the project whose permissions need to be revoked and click Revoke Permission in the Operation column. After you click OK, the project does not have any permissions on the table.

If a project has only inheritable permissions, Revoke Permission is gray, indicating that the permissions of the project cannot be revoked.