I'm looking for a plugin that either does this or suggestions on how to build a plugin with functionality...
Intellisense is a Microsoft SQL-Server editor built-in feature with autocompletion for your tables, columns etc. It's basically the same sort of stuff that http://sublimecodeintel.github.io/SublimeCodeIntel/ provides but with auto-completion for your database tables and columns etc.
I've managed to convert sublime text editor into an interactive SQL editor by creating a build system and having my query output to a different file viewable in sublime text. However, I obviously can't autocomplete table names etc. with SublimeCodeIntel - even if it did support SQL, it would need a way of pulling this logic into sublime text via some api / sql commands.