The names of one or more tables or views currently existing in
    the database that you want to lock and reserve. You can specify
    tables created as GLOBAL or LOCAL TEMPORARY TABLES, but they
    will be ignored because these types of tables do not contain
    shared data and so are never locked. You can specify tables from
    multiple databases by using the alias name as a prefix to the
    table name. If you do not specify an alias, then the default
    alias is used.