Home Database SQL What statements are used in sql to revoke data operation permissions from users?

What statements are used in sql to revoke data operation permissions from users?

May 01, 2024 pm 09:54 PM

The statement in SQL to revoke data operation permissions is REVOKE, and the syntax is: REVOKE <Permissions> ON <Table name> FROM <User>.

What statements are used in sql to revoke data operation permissions from users?

Statement to revoke data operation permissions in SQL

In SQL, by using REVOKE statement can revoke the user's permission to operate data.

Syntax

<code>REVOKE <权限> ON <表名> FROM <用户></code>
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Where:

  • <Permissions>: The permission to be revoked, which can be SELECT, INSERT, UPDATE, DELETE or all permissions (ALL)
  • <Table name>: The name of the table whose permissions are to be revoked
  • <User>: The user whose permissions are to be revoked

Example

For example, to revoke user alice’s SELECT permissions on table customers, you can use the following statement:

<code>REVOKE SELECT ON customers FROM alice;</code>
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NOTE

  • REVOKE does not delete granted permissions, it only revokes them. If the user subsequently gains permission again, they will be able to access the data again.
  • Be careful when using REVOKE as it is a destructive operation that may accidentally restrict user access to data.

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