No, it’s not Uncle Ernie!
SQL Fiddle is a very useful online tool for evaluating TSQL against a plethora of database engines (like jsFiddle does for javascript / jQuery), written by Jake Feasel
I found JS Fiddle to be a great tool for answering javascript / jQuery questions, but I also found that there was nothing available that offered similar functionality for the SQL questions. So, that was my inspiration to build this site. Basically, I built this site as a tool for developers like me to be more effective in assisting other developers.
It currently supports these database engines (in various versions): MySQL, PostgreSQL, MS SQL Server, Oracle, and SQLite