The document discusses several aggregate functions in SQL including SUM(), MAX(), MIN(), COUNT(), AVG(). It provides the syntax and examples of using each function with and without conditions to get the total sum, largest value, smallest value, number of rows, and average value from columns in tables.

1. By : Dhirendra Chauhan

2. “Aggregate “
Function

3. Sum()
The SUM() function returns the total sum of a
numeric column.
Syntax Example
SELECT Sum(ColumnName)
FROM table_name;
SELECT Sum(Salary)
FROM Employees1;

4. Sum() with Condition
Syntax Example
SELECT Sum(ColumnName)
FROM table_name
WHERE condition;
SELECT Sum(Salary)
FROM Employees1
WHERE Salary>300;

5. OUTPUT
OUTP
UT

6. Max()
The MAX() function returns the largest value of the
selected column.
Syntax Example
SELECT Max(ColumnName)
FROM table_name
SELECT Max(Salary)
FROM Employees1;

7. Max() with Condition
Syntax Example
SELECT Max(ColumnName)
FROM table_name
WHERE condition;
SELECT Max(Salary)
FROM Employees1
WHERE Salary>300;

8. OUTPUT
OUTP
UT

9. Min()
The Min() function returns the Smallest value of the
selected column.
Syntax Example
SELECT Min(ColumnName)
FROM table_name
SELECT Min(Salary)
FROM Employees1;

10. Min() with Condition
Syntax Example
SELECT Min(ColumnName)
FROM table_name
WHERE condition;
SELECT Min(Salary)
FROM Employees1
WHERE Salary>300;

11. OUTPUT
OUTP
UT

12. This Function returns the number of
rows that matches a specified criterion.
Syntax Example
SELECT Count(ColumnName)
FROM table_name;
SELECT Count(Salary)
FROM Employees1;
COUNT()

13. Count() with Condition
Syntax Example
SELECT Count(ColumnName)
FROM table_name
WHERE condition;
SELECT Count(Salary)
FROM Employees1
WHERE Salary>300;

14. OUTPUT
OUTP
UT

15. Count(Column)
&
Count(*)

16. COUNT(*) counts the rows in
your table.
COUNT(column) counts the entries in
a column - ignoring null values

17. Count(Column) Count(*)
SELECT Count(Salary)
FROM Employee;
SELECT Count(*)
FROM Employees1;

18. OUTPUT
OUTP
UT

19. The AVG() function returns the average value of a
numeric column.
Syntax Example
SELECT AVG(ColumnName)
FROM table_name;
SELECT AVG(Salary)
FROM Employees1;
AVG()

20. AVG() with Condition
Syntax Example
SELECT AVG (ColumnName)
FROM table_name
WHERE condition;
SELECT AVG(Salary)
FROM Employees1
WHERE Salary>300;

21. OUTPUT
OUTP
UT

22. THANK
YOU