Find the id of suppliers whose average amount purchased for each product is above 50000 or below 30000.
SELECT supplier_id FROM Product_Suppliers GROUP BY supplier_id HAVING avg(total_amount_purchased)  >  50000 OR avg(total_amount_purchased)  <  30000
SELECT supplier_id FROM Product_Suppliers GROUP BY supplier_id HAVING avg(total_amount_purchased)  >  50000 OR avg(total_amount_purchased)  <  30000
[{'supplier_id': 1}, {'supplier_id': 2}]