Named SQL Server Instances with FreeTDS
A helpful post on accessing named sql server instances using freetds
I was having a lot of trouble doing that. Turns out the 'instance' key exists. As far as I could find it wasn't in the doc anywhere, so this is just a post in the hope that it'll save somebody else some time in the future.
From the post:[def] host = abc instance = def port = 1433 client charset = UTF-8 tds version = 8.0