- database_name
- Containing database. The default is the database for the current session.
- user_name
- Containing user name. The default is the database for the current user.
- table_name
- Name of the table to be altered. This can be a base data table or a user-defined join index, but cannot be any of the following:
- Error table
- Volatile table
- System-defined join index
Also see ALTER TABLE Basic Options.