Why do we use aggregate functions in SQL?

What is the purpose of aggregate functions in SQL?

An aggregate function in SQL performs a calculation on multiple values and returns a single value. SQL provides many aggregate functions that include avg, count, sum, min, max, etc. An aggregate function ignores NULL values when it performs the calculation, except for the count function.

What are the advantages of aggregate functions?

In database management systems, an aggregate function is a function that performs calculations on a group of values and returns a single value. It is used to summarize the data. It performs calculations on multiple rows of a single column of a table to form a single value of more significant meaning.

What are aggregate functions explain with examples?

In database management, an aggregate function or aggregation function is a function where the values of multiple rows are grouped together to form a single summary value. Common aggregate functions include: Average (i.e., arithmetic mean) Count.