Here are some links I found the one below is the most simple I have found

 

http://friism.com/processing-and-sql-server-in-windows

Processing and SQL server on Windows

Tim Regan has a comprehensive description of how he got SQL Server 2008 running with processing. I found some steps to be superfluous while others were missing (it was still an invaluable guide though), here’s how I did it:

1. Get the SQL Server JDBC driver, be sure to get the Windows version
2. Unpack it somewhere and copy sqljdbc.jar to librariessqljdbclibrary in your Processing folder
3. Copy qljdbc_auth.dll from the enuauth† folder of jdbc to C:WindowsSystem32
4. In your sketch, do Sketch->Import Library->sqljdbc
5. You can now use the helper class from Tim’s post (which is inspired by the one in Ben Fry’s book)

The initial question is a bit strange... (MySQL isn't a library)