Here’s a SQL query that you can use to find the total revenue for each product:

```
SELECT ProductID, SUM(Quantity * Price) AS TotalRevenue
FROM transactions
GROUP BY ProductID;
```

This query will group transactions by ProductID and calculate the total revenue for each product by multiplying the quantity and price columns and summing them up. The result will have two columns: ProductID and TotalRevenue.
Data una tabella di transazioni con colonne TransactionID, ProductID, Quantity e Price, scrivi una query SQL per trovare le entrate totali per ciascun prodotto.