When EXISTS or NOT EXISTS Is Used in a Subquery

question 23

True/False

When EXISTS or NOT EXISTS is used in a subquery, the select list of the subquery will usually just select all columns as a placeholder because it doesn't matter which columns are returned.

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Definitions:

Operating Costs

Expenses involved in the day-to-day functions of a business related to its operations, potentially including both cost of goods sold and operating expenses.

Salvage Value

The estimated resell value of an asset at the end of its useful life.

Discount Rate

The interest rate used to discount future cash flows to their present value, often in the context of investment appraisal or determining the net present value.

Net Present Value

The difference between the present value of cash inflows and outflows over a period, used in capital budgeting to assess profitability of investments.