'Return ``True`` if the given table exists, ignoring
the `schema`.'

def has_table(self, connection, table_name, schema=None):

    tblqry = '\n                                SELECT    1    AS    has_table    FROM    rdb$database\n                                WHERE    EXISTS    (SELECT    rdb$relation_name\n                                                                                        FROM    rdb$relations\n                                                                                        WHERE    rdb$relation_name=?)\n                                '
    c = connection.execute(tblqry, [self.denormalize_name(table_name)])
    return (c.first() is not None)
