Generates a ``select *`` statement in the proper dialect

def select_star(
            self, table_name, schema=None, limit=100, show_cols=False,
            indent=True, latest_partition=False, cols=None):
        """Generates a ``select *`` statement in the proper dialect"""
        eng = self.get_sqla_engine(
            schema=schema, source=utils.sources.get('sql_lab', None))
        return self.db_engine_spec.select_star(
            self, table_name, schema=schema, engine=eng,
            limit=limit, show_cols=show_cols,
            indent=indent, latest_partition=latest_partition, cols=cols)