Summarize the Data

Essential Grouping lets users add one or multiple summary items for each group. Changes to any data items are automatically reflected in the summaries. The calculation of summary values is very fast with only O(log2 n) operations (with n being the number of records in the table) because of highly optimized balanced tree structures used in the grouping engine.

The following graphic represents a code window illustrating how to add a summary item.

After adding a summary item, the Element collection in the Grouping Engine has additional items at the bottom of each group. The picture below shows the elements for a table that has been grouped by column C, with summary items on column A (Count and MaxLength) and on column D (Count and Values vector).