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Aggregate Functions

In this section, you will learn how use of the aggregate functions.

Aggregate Functions


In this section we are going to illustrate aggregate function, with the help of which we can use many arithmetic operation like average, count, maximum and many more in SQL. They are briefly described and denoted by the keyword in the given below section.


For all of the above given function the standard code syntax will be:




SELECT "function type" ("column_name") FROM "table_name"

For example we just take a Employee table and use the aggregate function SUM on the field "Salary" to find out the total salary of the Employee table.

Table Employee:

emp_Name Salery Joining_Date
Amit 15000 Feb-05-2005
Chandan 25000 Feb-17-2005
Ravi 8000 Feb-25-2005
Vinod 7000 Feb-28-2005

To find out the total salary of the company's employee we should write the following code:

SELECT SUM (Salary) FROM Employee;

When we run the above query we will get the following result:


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Posted on: September 15, 2007

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vikram singh khatri
November 26, 2011
.net,c# ,sql

give me some interview based quetion