.NET and SQL Server interview questions – SQL query to merge two different columns into single column?


let’s us assume that we have the following table of Employee.

Emp_Id Emp_Name Emp_Salary_2010 Emp_Salary_2011
1 Shiv 17000 19000
2 Raju 13500 15000
3 Sham 15000 18000
4 Moosa 11000 14000
5 Feroz 12000 16000

Now we want to merge the Emp_Salary_2010 and Emp_Salary_2011 columns into a single column as Salary.


select Emp_Name,Emp_Salary_2010 as Salary from Employee
select Emp_Name,Emp_Salary_2011 as Salary from Employee


Emp_Name Salary
Shiv 17000
Shiv 19000
Raju 13500
Raju 15000
Sham 15000
Sham 18000
Moosa 11000
Moosa 14000
Feroz 12000
Feroz 15000

Please click here to see more .NET and SQL Server interview questions

Visit Authors blog for more .NET and SQL Server  interview questions

About c# and .NET Interview questions

This blog is for developers who want to crack .NET and C# interviews. It has all tips and tricks needed to crack .NET interviews , C# interview , SQL Server interview , Java interview , WCF Interview , Silverlight interview , WPF interview , LINQ interview , Entity framework Interview. Do not forget to watch our Learn step by step video series. Learn MVC in 16 hours:- https://www.youtube.com/watch?v=Lp7nSImO5vk Learn AngularJS Step by Step:- https://www.youtube.com/watch?v=0kmdjqgO9IY Learn Design Pattern in 8 hours:- https://www.youtube.com/watch?v=YDobmucohqk Learn C# and .NET in 60 days:- https://www.youtube.com/watch?v=yh2SrzCkNQA Learn MSBI in 32 hours:- https://www.youtube.com/watch?v=mGPJx3ocFgg Learn SharePoint Step by Step in 8 hours:- https://youtu.be/C2fW76SwJNU
This entry was posted in Uncategorized and tagged , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s