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The Aggregate Function Which Returns the Number of Nonnull Field

question 63

Multiple Choice

The aggregate function which returns the number of nonnull field values is the ____ function.


Definitions:

Crude Oil

A naturally occurring, unrefined petroleum product composed of hydrocarbon deposits and other organic materials, used as a raw material for fuel and in the petrochemical industry.

Producer Surplus

The difference between what producers are willing to sell a good for and the actual price they receive.

Tariff

A tax imposed by a government on imported or exported goods.

Total Surplus

The sum of consumer and producer surplus, representing the total benefit to society from the production and consumption of goods or services.

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