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You have been given two tables, CUSTOMER and SALE. You want to check the referential integrity constraint: SALE.CustomerNumber must exist in CUSTOMER.CustomerNumber You run the
You have been given two tables, CUSTOMER and SALE. You want to check the referential integrity constraint:
SALE.CustomerNumber must exist in CUSTOMER.CustomerNumber
You run the following SQL query:
SELECTCustomerNumber
FROMSALE
WHERECustomerNumber NOT IN
(SELECTCustomerNumber
FROMCUSTOMER);
What is shown in the results of this query?
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