Summary tables provide aggregated information for terminated events over time. The tables in this group summarize event data in different ways.
Each summary table has grouping columns that determine how to group the data to be aggregated, and summary columns that contain the aggregated values. Tables that summarize events in similar ways often have similar sets of summary columns and differ only in the grouping columns used to determine how events are aggregated.
Summary tables can be truncated with
TRUNCATE TABLE. The effect is to
reset the summary columns to 0 or
to remove rows. This enables you to clear collected values and
restart aggregation. That might be useful, for example, after
you have made a runtime configuration change.