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

UPDATE employee
SET AttributeValue = AttributeName, 
    AttributeName = AttributeValue

However, unless both columns have the exact same definition, you risk losing information.