def _create_tree_space(self, target_tree_id):
        opts = self.model._meta
        cursor = connection.cursor()
        cursor.execute("""
        UPDATE %(table)s
        SET %(tree_id)s = %(tree_id)s + 1
        WHERE %(tree_id)s > %%s""" % {
            'table': qn(opts.db_table),
            'tree_id': qn(opts.get_field(self.tree_id_attr).column),
        }, [target_tree_id])
Returns the given hash, with only the first ``show`` number shown. The
dataset/ETHPy150Open agiliq/django-socialnews/socialnews/mptt/managers.py/TreeManager._create_tree_space--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/auth/hashers.py/mask_hash