Code snippets refers to code based on my investigations this does not include t-SQL (but does include XML).

There might be t-SQL code snippets in a Team Server edition of Visual Studio.

For better information, see “How to: Creating Code Snippets for Visual Studio 2005/2008” here:

http://blogs.msdn.com/publicsector/archive/2007/12/18/
    how-to-creating-code-snippets-
    for-visual-studio-2005-2008.aspx

Also see “How to: Use Code Snippets (C#)” here:

http://msdn.microsoft.com/en-us/library/z4c5cc9b(VS.80).aspx