SQL Server – What Exactly are UNION and UNION All?

Arun Ramachandran is a Software Engineer having hands on experience in different Microsoft Technologies who is presently working in Experion Technologies, India. He has written over 95 articles on the subject on his blog at http://BestTEchnologyBlog.com. Along with 3 years of hands on experience he holds a Master of Computer Applications degree from Cochin University of Science & Technology (CUSAT).