SQL Server gives you Fuzzy Lookups and Fuzzy Grouping, but only in SQL Server Integration Services. It's not even on the list of SSIS enhancements for SQL Server 2008.
This week at the MVP Summit, I was having a discussion about this with Jamie Thomson, and we had a chat with one of the T-SQL guys to suggest it. The response came back with "Log in on connect", which I did just now. https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=338664
Please check it out and provide comments, votes, validations. All this will help persuade Microsoft to implement this useful feature. And tell your friends too! The more it receives, the more likely it will be implemented.