SQL Reference Guide > SQL Reference Guide > SQL Statements > REVOKE
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REVOKE
Valid in: SQL, ESQL, OpenAPI, ODBC, JDBC, .NET
The REVOKE statement revokes privileges. It removes database privileges or role access granted to the specified users, groups, roles, or PUBLIC. (To confer privileges, use the GRANT statement.) You cannot revoke privileges granted by other users.
The REVOKE statement has the following format:
[EXEC SQL] REVOKE [GRANT OPTION FOR]
              ALL [PRIVILEGES] | privilege {, privilege} | role {, role}
              [ON [object_type] [schema.]objectname {, [schema.]object_name} |
                            CURRENT INSTALLATION]
              FROM PUBLIC | [auth_type] auth_id {, auth_id}
              [CASCADE | RESTRICT];
privilege
Specifies the privileges to revoke. To revoke all privileges, use ALL. The privileges must agree with the object_type as follows:
Object Type
Valid Privileges
Table (omit object_type)
COPY_INTO
COPY_FROM
DELETE
EXCLUDING
INSERT
REFERENCES
SELECT
UPDATE
DATABASE (or CURRENT INSTALLATION)
[NO]ACCESS
[NO]CONNECT_TIME_LIMIT
[NO]CREATE_PROCEDURE
[NO]CREATE_SEQUENCE
[NO]CREATE_TABLE
[NO]DB_ADMIN
[NO]IDLE_TIME_LIMIT
[NO]LOCKMODE
[NO]QUERY_COST_LIMIT
[NO]QUERY_CPU_LIMIT
[NO]QUERY_IO_LIMIT
[NO]QUERY_PAGE_LIMIT
[ACTUAL] [NO]QUERY_ROW_LIMIT
[NO]QUERY_ROW_STEP_LIMIT
[NO]READONLY
[NO]SELECT_SYSCAT
[NO]SESSION_PRIORITY
[NO]TIMEOUT_ABORT
[NO]UPDATE_SYSCAT
PROCEDURE
EXECUTE
DBEVENT
REGISTER
RAISE
SEQUENCE
NEXT
Role
Omit this clause
object_type
Specifies the type of object on which the privileges were granted. To revoke permission on a table, omit the object_type parameter. Valid object_types are:
DATABASE
PROCEDURE
DBEVENT
SEQUENCE
object_name
Specifies the name of the table, database procedure, database event, or role on which the privileges were granted.
auth_type
Specifies the type of authorization identifier to which privileges were granted. Auth_type must be USER, GROUP, or ROLE. The default is USER. More than one auth_type cannot be specified.
auth_id
Specifies the users, groups, or roles from which privileges are being revoked. The auth_ids must agree with the type specified by the auth_type.
For example, if you specify GROUP as auth_type, the auth_id list must be a list of group identifiers. If you specify PUBLIC for the auth_id, you must omit auth_type. You can revoke from users and PUBLIC in the same REVOKE statement.
Revoking a database privilege makes that privilege on the specified database undefined for the specified grantee (auth_id). If an attempt is made to revoke a privilege that was not granted to a specified auth_id, no changes are made to the privileges of that auth_id.
Privileges granted on specific databases are not affected by REVOKE...ON CURRENT INSTALLATION, and privileges granted on current installation are not affected by REVOKE...ON DATABASE. Revoking privileges from PUBLIC does not affect privileges granted to a specific user.
If a privilege was granted using its “no” form (for example, NOCREATE_TABLE), the same form must be used when revoking the privilege. For example, the following grant prevents a user from creating tables:
GRANT NOCREATE_TABLE ON DATABASE employee
        TO USER karenk;
To remove this restriction:
REVOKE NOCREATE_TABLE ON DATABASE employee
        FROM USER karenk;
For more information about privileges, see GRANT (privilege).
Note:  In some cases granting a database privilege imposes a restriction, and revoking the privilege removes the restriction. For example, GRANT NOCREATE_TABLE prevents the user from creating tables.
Last modified date: 08/14/2024