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SQL Functions SQL Server

AVG() function in SQL Server

Byvivekjohari

Aug 14, 2014 #SQL Functions
Avg():- This function is used to get the average value of a numeric column

Syntax:-

      SELECT AVG(column_name) FROM table_name

In this article, we are going to use the following table for some examples:-

CREATE TABLE [dbo]. [Employee](
[Empid] [Int] IDENTITY (1, 1) NOT NULL Primary key,
[EmpNumber] [nvarchar](50) NOT NULL,
[EmpFirstName] [nvarchar](150) NOT NULL,
[EmpLAStName] [nvarchar](150) NULL,
[EmpEmail] [nvarchar](150) NULL,
[Salary] [int] NULL
)

We insert following data into the above tables:-

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A001′,’Vivek’,’Johari’,’samir@abcmail.com’,200000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A002′,’Amit’,’Kumar’,’amit@abcmail.com’,100000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A003′,’Neha’,’Sharma’,’neha@abcmail.com’,300000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A004′,’Chandra’,’Singh’,’vivek@abcmail.com’,320000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A005′,’Avinash’, ‘Dubey’,’avinash@abcmail.com’,250000)
 
For example,

      Select AVG(salary) from employee

will give the given result:-

234000   

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By vivekjohari

I am currently working as a Senior Database Professional and have around 18 years of experience in database. Degree:- Master Degree in Computer(MCA) Certification course in Data Science & Machine Learning from Indian Institute of Technology (IIT), Delhi Work experience:- Designing of the database. Database Optimization. Writing Complex Stored Procedures,Functions,Triggers etc. Designing and developing SSIS & DTS packages. Designing SQL Reports using SSRS. Database Server Maintenance. Certification:- MCTS: DA-100: Analysing Data with Microsoft Power BI MCTS: DP-300: Administering Relational Databases on Microsoft Azure Microsoft certified Sql DBA in Sql server 2008 (MCTS). Microsoft certified BI professional in Sql server 2008 (MCTS). Oracle certified profession DBA in ORACLE 10g (OCP) certified profession DBA in ORACLE 9i (OCP) My other publication Technical Blog:- Technologies with Vivek Johari Guest Author and Blogger at sqlservercentral.com

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