C++ vs. C# vs. Assembly Language

[nospam]

Just wondering,

What do you think the difference in performance would be between

(1.) Compiled C#
(2.) Compiled C++
(3.) and Assembly Language

And how would the mix be if some if any of these languages had to hit
against a SQL Server database

And would the differences be more or less different is you had to use
ASP.NET?

I guess, what I am asking is how would Assembly Language affect the overall
performance?

And does anyone code in assembly language anyway??

Thanks.