-- simulate data load #1
INSERT Staging.Sales (SaleID, ProductName, PricePaid)
VALUES ( 1, \'Bicycle\', 1023.00);
-- wait 5 seconds
WAITFOR DELAY \'00:00:05\';
-- simulate data load #2, where Sale 1 has changed in the source system
INSERT Staging.Sales (SaleID, ProductName, PricePaid)
VALUES ( 1, \'Bicycle\', 999.99);