declare @t table (
	Number int primary key,
	DT time(2) not null default '00:00:00',
	Value money not null default 0,
	TS rowversion not null unique
);

-- Empty rows - create once in the beginning
insert into @t (Number)
select top (86400) row_number() over(order by v.name) - 1
from master.dbo.spt_values v,
	master.dbo.spt_values v1
order by 1;


--while 1=1 begin

	update t set Value = rand() * 100,
		DT = sysdatetime()
	output sysdatetime() as [Now], inserted.*, deleted.Value, deleted.TS
	from @t t
	where t.Number = ((select top(1) number from @t order by TS desc) + 1) % 86400;

	--waitfor delay '00:00:01';

--end;