Which Transact-SQL statement should you run?

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You have a database that contains tables named Customer_CRMSystem and Customer_HRSystem. Both
tables use the following structure:

The tables include the following records:
Customer_CRMSystem

Customer_HRSystem

Records that contain null values for CustomerCode can be uniquely identified by CustomerName.
You need to display a list of customers that do not appear in the Customer_HRSystem table.
Which Transact-SQL statement should you run?

A.

B.

C.

D.

E.

F.

G.

H.

Explanation:
EXCEPT returns distinct rows from the left input query that aren’t output by the right input query.
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