SELECT $ (dollar sign)

Question

I have good experience in SQL Server, But suddenly I discovered this strange SELECT command

SELECT $ 

or

SE         


        

Answer 1

You can prove out that SQL Server is treating it as a money type:

select $ as n into #x

exec tempdb..sp_help '#x'

sp_help will output (among other things):

 Column_name     Type     Computed     Length     Prec     Scale     Nullable     TrimTrailingBlanks     FixedLenNullInSource     Collation    
 --------------  -------  -----------  ---------  -------  --------  -----------  ---------------------  -----------------------  ------------ 
 n               money    no           8          19       4         no           (n/a)                  (n/a)                    (null)