1. Aggregate Functions

2. Aggregate Functions
Aggregate function are functions that take a collection of values as input and return a single value as output.
AVG – average value
MIN – minimum value
MAX – Maximum value
SUM – Sum of values
COUNT – number of values

3. Std
Sno
Name Create table
Mark1
Mark2
Mark3
SQL> select avg(mark1) from std;
SQL> select avg(mark1), avg(mark2), avg(mark3) from std where mark1>=60;

4. SQL> select min(mark1) from std;
SQL> select max(mark1) from std;
SQL> select sum(mark1) from std;
SQL> select count(*) from std where mark>=60 and mark2>=60 and mark3>=60;