declare @birth datetime, @now datetime
select @birth ='19660527 12:34:22', @now = getdate()
select
    years,
    months,
    days =
        case when day( @birth ) > day( @now )
            then
                day( @now )
                + datediff(
                    day,
                    @birth,
                    dateadd(
                        mm,
                        datediff( mm, 0, @birth ) + 1,
                        0
                        )
                    ) - 1
        else day( @now ) - day( @birth )
        end,
    hours =
        datepart(
            hh,
            convert( varchar(10), dateadd( mi, minutes, 0 ), 108 )
            ),
    minutes =
        datepart(
            mi,
            convert( varchar(10), dateadd( mi, minutes, 0 ), 108 )
            )
    from (
        select
            years,
            months =
                datediff(
                    mm,
                    dateadd( yy, years, @birth ),
                    @now
                    ) +
                case
                when day( @now ) >= day( @birth )
                   then 0
                else -1 
                end,
            minutes =
                datediff(
                    mi,
                    convert( varchar(8), @birth, 108 ),
                    convert( varchar(8), @now, 108 )
                    )
            from (
                select
                    years =
                        datediff( yy, @birth, @now )
                        + case
                            when month(@now)>=month(@birth) then 0
                            else -1
                            end
            ) t
    ) as t