MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
AVG, COUNT, MAX, MIN and SUM are known as what?
A
Aggregate functions
B
Wildcard filters
C
Subqueries
D
Calculated field
Explanation: 

Detailed explanation-1: -SQL Aggregate Functions-AVG, COUNT, DISTINCT, MAX, MIN, SUM.

Detailed explanation-2: -In SQL, the function-avg, min, max, sum, count is called as aggregate function. Aggregate functions return a single value after calculating from a group of values.

Detailed explanation-3: -The SUM() function returns the total sum of a numeric column. This will produce the following result.

Detailed explanation-4: -Like MIN(), MAX() is an aggregate function that returns a numeric value from a set. The difference is that it returns the largest (maximum) value. The values can come from a column or as the result of an expression that returns a numeric value or values.

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