Question

Which of the following is NOT a standard aggregation operator?

Select one:
a. GROUP
b. SUM
c. AVG
d. COUNT

Answer 1

The incorrect standard aggregation operator among the options is 'GROUP'. Standard aggregates are SUM, AVG, and COUNT, used to calculate a single result from a set of values, while GROUP is related to the GROUP BY clause in SQL.

Step-by-step explanation:

The option that is NOT a standard aggregation operator is a. GROUP. In the context of SQL and database operations, the standard aggregation operators include SUM, AVG (average), and COUNT. These operators are used to compute a single value from a collection of values. For example, SUM adds up all the values in a column, AVG calculates the mean of the values, and COUNT determines the total number of non-NULL values in a column. GROUP, on the other hand, is not an operator, but part of the GROUP BY clause in SQL that is used to arrange identical data into groups.