A script that make high CPU utilization

USE master

SELECT MyInt = CONVERT(BIGINT, o1.object_id) + CONVERT(BIGINT, o2.object_id) + CONVERT(BIGINT, o3.object_id)

INTO #temp

FROM sys.objects o1

JOIN sys.objects o2 ON o1.object_id < o2.object_id

JOIN sys.objects o3 ON o1.object_id < o3.object_id

SELECT SUM(CONVERT(BIGINT, o1.MyInt) + CONVERT(BIGINT, o2.MyInt))

FROM #temp o1

JOIN #temp o2 ON o1.MyInt < o2.MyInt