How do I swap column values in sql server 2008?

Question

I have a table called Employee

 Eno     ename     AttributeValue      AttributeName  
 1       aa           a123             abc
 2       bbb          b123           


        

Answer 1

This is really good example

SELECT * from employees;
Go

DECLARE @temp as varchar(20)
update employees
set    @temp = fname,
       fname = lname,
       lname = @temp
WHERE  deptno = 10;
GO

SELECT * from employees;

Answer 2

update Employee set AttributeValue = AttributeName, AttributeName = AttributeValue