List all the distinct product names ordered by product id?
SELECT DISTINCT product_name FROM product ORDER BY product_id
SELECT DISTINCT product_name FROM product ORDER BY product_id
[{'product_name': 'rose'}, {'product_name': 'yellow'}, {'product_name': 'chat'}, {'product_name': 'wechat'}, {'product_name': 'life'}, {'product_name': 'keep'}, {'product_name': 'messager'}, {'product_name': 'hangout'}, {'product_name': 'twitter'}, {'product_name': 'blog'}, {'product_name': 'snapchat'}, {'product_name': 'doulingo'}, {'product_name': 'learn'}, {'product_name': 'teach'}, {'product_name': 'game'}]