--drop table #temptable
create table #temptable
(
    argument1 int,
    argument2 int,
    argument3 datetime
)

declare @rowcount int,@argument1 int,@argument2 nvarchar(50),@argument3 datetime
set @rowcount=1
set @argument1=1
set @argument2=0
set @argument3=GETDATE()

while(@rowcount<100)
begin
    insert into #temptable(argument1,argument2,argument3)
                values(@argument1,@argument2,@argument3)
    
    set @argument1=@argument1 + datepart(day,@argument3)
    set @argument3=@argument3-1    
    set @rowcount = @rowcount + 1
end

--select * from #temptable

declare @lastargument2 int
set @lastargument2=0
set @argument2=0
declare _cursor cursor for(select argument1 from #temptable)
open _cursor;
fetch next from _cursor into @argument2 
while @@fetch_status = 0
begin            
    update #temptable
    set argument2=@argument2+@lastargument2
    where current of _cursor
    
    set @lastargument2=@argument2    
    fetch next from _cursor into @argument2 
end
close _cursor
deallocate _cursor

--select * from #temptable