Cоde exаmple 5-1SELECT VendоrStаte, VendоrCity, VendorNаme, COUNT(*) AS InvoiceQty, SUM(InvoiceTotal) AS InvoiceAvgFROM Invoices JOIN Vendors ON Invoices.VendorID = Vendors.VendorIDWHERE VendorState < 'e'GROUP BY VendorState, VendorCity, VendorNameHAVING SUM(InvoiceTotal) > 500ORDER BY VendorState, VendorCity, VendorName; The GROUPING SETS operator works like the ROLLUP and CUBE operators, but it