​Which Comparison Operator Allows You to Search for NULL Values

question 123

Multiple Choice

​Which comparison operator allows you to search for NULL values in a subquery?

• A) ​IS NULL
• B) ​NVL
• C) ​=NULL
• D) ​NVLS

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Definitions:

Credit Sales

Transactions where goods are sold and payment is received at a later date, extending credit to the buyer.

Gain from Sale

The profit realized from the sale of assets or investments when the selling price exceeds the original purchase price.

Operating Income

The profit earned from a firm's core business operations, excluding deductions of interest and taxes.

Operating Revenues

The income earned by a company from its normal business activities.