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  3. Time Series Analysis in SQL Server

Exercise

Generate a summary with ROLLUP

The ROLLUP operator works best when your non-measure attributes are hierarchical. Otherwise, you may end up weird aggregation levels which don't make intuitive sense.

In this scenario, we wish to aggregate the total number of security incidents in the IncidentRollup table. Management would like to see data aggregated by the combination of calendar year, calendar quarter, and calendar month. In addition, they would also like to see separate aggregate lines for calendar year plus calendar quarter, as well as separate aggregate lines for each calendar year. Finally, they would like one more line for the grand total. We can do all of this in one operation.

Instructions

100 XP
  • Complete the definition for NumberOfIncidents by adding up the number of incidents over each range.
  • Fill out the GROUP BY segment, including the WITH ROLLUP operator.