This question asked in CBSE SQP-2021
Write any one aggregate function used in SQL.
Answer:
Aggregate functions are those functions which performs a calculation on a set of values and returns a single value.
One aggregate function used in SQL is COUNT( )
Aggregate function used in SQL are
|
Aggregate function |
Description |
|
AVG( ) |
Returns the average of a set of values . |
|
SUM( ) |
Returns the sum of a set of values . |
|
COUNT( ) |
Returns the number of rows that matches a specific criterion |
|
MIN( ) |
Returns the minimum value in a set of values |
|
MAX( ) |
Returns the maximum value in a set of values |