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Which of the following operators could be used to unnest the following SQL query? Select ALL that applies. SELECT CustomerName FROM Customers WHERE CustomerID IN

Which of the following operators could be used to unnest the following SQL query? Select ALL that applies.
SELECT CustomerName
FROM Customers
WHERE CustomerID IN (SELECT CustomerID FROM Orders);
Group of answer choices
Semi-Join
Cartesian Product Join
Union
Set Difference
Projection there can be multiple answers

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