write a query that will pivot the sales$\_$totals data so that there is a column for each of the $4$ products containing the total sales across all months of $2020.$ It is ok to include the product$\_$id values in your query, and the results should look as follows: tot$\_$sales$\_$large$\_$gears, $6200/$ tot$\_$sales$\_$small$\_$gears, $5450/$tot$\_$sales$\_$crankshafts, $0/$tot$\_$sales$\_$sprockets, $3050$