Just a reminder!

Don't forget that SQL server can work as your simple calculator or runtime environment to test out small pieces of code.

As calculator:

print 135 * 3.24

Prints:
437.40

Or figuring out if your idea of calculating factorial is ok:

declare @l int
set @l = 0

while @l <= 100
begin
 declare @res float
 set @res = 1.0

 declare @i int
 set @i = 1
 while @i <= @l
 begin
  set @res = @res * @i
  set @i = @i + 1
 end
 print str(@l)+'! = ' + convert(varchar(50),@res)
 set @l = @l + 1
end


Prints:
         0! = 1
         1! = 1
         2! = 2
         3! = 6
         4! = 24
         5! = 120
         ...