​The Following SQL Statement Contains Which Type of Subquery

question 34

Multiple Choice

​The following SQL statement contains which type of subquery?
​ SELECT title,retail,category,cataverage FROM books NATURAL JOIN
(SELECT category,AVG(retail) cataverage FROM books GROUP BY category) ;

• A) ​single-row
• B) ​multiple-row
• C) ​correlated
• D) ​uncorrelated

---

Definitions:

Variable Overhead Costs

Overhead costs that fluctuate with the level of production activity, such as utilities for the manufacturing plant.

Operating Capacity

The maximum output or productivity level that a company can achieve using its current resources under normal working conditions.

Fixed Overhead Costs

Expenses that do not change with the level of production, such as rent or salaries of administrative staff.

Effect On Income

The impact of specific actions, events, or decisions on a company's net income or profitability.