Question: SELECT c . CustomerName, SUMs. QuotedPrice ) AS TotalValue FROM Customer C JOIN Shipment s ON c . CustomerID = s . CustomerID WHERE EXTRACT

SELECT
c. CustomerName,
SUMs. QuotedPrice) AS TotalValue
FROM Customer C
JOIN Shipment s ON c.CustomerID = s.CustomerID
WHERE EXTRACT(YEAR FROM .BookingDate)=2021
GROUP BY c. CustomerName
ORDER BY TotalValue DESC; explain the above code ?

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