Final answer:
To calculate the total quantity of items sold during the first quarter of 2022, use an SQL query that applies the SUM aggregate function to the quantity field of tbltransactions.
Step-by-step explanation:
To calculate the gross sales volume during the first quarter of 2022 based on tbltransactions, you can use an SQL query. First, you need to filter the transactions that occurred during that time period. You can do this by adding a WHERE clause to the query, specifying the date range as '2022-01-01' to '2022-03-31'. Then, you can use the SUM aggregate function on the quantity field to calculate the total quantity of items sold. Finally, you can rename the result field as TotalQ1SalesVolume.