SELECT
DATEADD(HOUR, DATEDIFF(HOUR, 0, RunDateTime), 0) AS AvgHourlyDateTime,
--DATEADD(MILLISECOND, -3, DATEADD(HOUR, DATEDIFF(HOUR, 0, RunDateTime) + 1, 0)) AS AvgHourlyEndDateTime,
AVG([RowCount]) AS AbgRowCount
FROM @ihaveatablelikethat
GROUP BY
DATEADD(HOUR, DATEDIFF(HOUR, 0, RunDateTime), 0)
--,DATEADD(MILLISECOND, -3, DATEADD(HOUR, DATEDIFF(HOUR, 0, RunDateTime) + 1, 0))
SQL DBA,SQL Server MVP(07, 08, 09) A socialist is someone who will give you the shirt off *someone else's* back.