You can execute the REVOKE statement to revoke permissions from an account.
REVOKE
priv_type [(column_list)]
[, priv_type [(column_list)]] ...
ON [object_type] priv_level
FROM user
Parameters
priv_type: the type of the permission to revoke. For more information, see Permission model.column_list: optional. If thepriv_typeparameter is set toSELECT, you can enter the names of columns to revoke theSELECTpermission on these columns.priv_level: the level of the permission to revoke.*.*: the cluster level.db_name.*: the database level.db_name.table_nameortable_name: the table level.
Precautions
To revoke permissions from accounts by executing the REVOKE statement, you must have the GRANT OPTION permission.
Example
Revoke the database-level all permission of account3.
REVOKE all ON adb_demo.* FROM 'account3';