Unfortunately, Microsoft seems to have kind of put Small Basic on hold for a while. However, there is a great community on these forums and Small Basic is also extendable from any .Net language. Pretty much anything that can be done in Visual C++ .Net /
C# / VB can be done in Small Basic with an extension.
This being said, I imagine Microsoft has no plans for this anytime in the near future. However, you can write a class library in any .Net language that can add SQL support for Small Basic. Here is a good guide for getting your DLL to work in Small Basic:
http://social.msdn.microsoft.com/Forums/en-US/smallbasic/thread/f1c26a4a-3929-400a-8c46-ba0bedb33682 .