SQL method to replace repeating blanks with single blanks

Question

Is there a more elegant way of doing this. I want to replace repeating blanks with single blanks....

   declare @i int

    set @i=0
    while @i <= 20
           


        

Answer 1

select 
    string = replace(
                replace(
                    replace(' select   single       spaces',' ','<>')
                    ,'><','')
                ,'<>',' ')

Replace duplicate spaces with a single space in T-SQL