What does “&” means in this sql where clause?

Question

What does the \"&\" mean here:

select pt.TrTp, sum(pt.TrTp)
from ProdTr pt
where TransSt & 16 <> 16  // this is the row that i don´t understand..
g         


        

Answer 1

It's bitwise AND. Please refer to this MSDN Article.