How can I add a character into a specified position into string in SQL SERVER?

Question

I have a varchar field like:

195500
122222200

I need to change these values to:

1955.00
1222222.00

Answer 1

Please see the following code. You can choose the symbols and index in variable.

 declare @index int,@sym varchar(10)
 set @sym='#'
 set @index=2
 select left(195500,@index) +''+@sym+''+right(195500,len(195500)-@index)