What is the product ID of the most frequently ordered item on invoices?
CREATE TABLE INVOICES (Product_ID VARCHAR)
SELECT Product_ID FROM INVOICES GROUP BY Product_ID ORDER BY COUNT(*) DESC LIMIT 1
### Context: CREATE TABLE INVOICES (Product_ID VARCHAR) ### Question: What is the product ID of the most frequently ordered item on invoices? ### Answer: SELECT Product_ID FROM INVOICES GROUP BY Product_ID ORDER BY COUNT(*) DESC LIMIT 1