Microsoft SQL Server 2005 check if temporary table empty

Question

Is there a fast/efficiency way to check if a table is empty?

DECLARE @StartEndTimes TABLE
(
    id bigint,
    StartTime datetime,
    EndTime datetime
)

IF @StartEndTimes IS NOT NULL

Answer 1

Rather than counting you can;

if exists (select id from @StartEndTimes)
   set @has_stuff = 1

Which will return as soon as it hits a row.