sql-查询一个字段相同另一个字段不同

SELECT DISTINCT
	a.fullname,
	a.belong_user_id AS belong_id,
	a.store_type
FROM
	c_store_tbl a
JOIN c_store_tbl b ON a.store_type != b.store_type
WHERE
	a.belong_user_id = b.belong_user_id
ORDER BY
	a.belong_user_id,
	a.store_type