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Summary tables provide aggregated information for terminated events over time. The tables in this group summarize event data in different ways.
Wait Event Summaries
events_waits_summary_by_account_by_event_name
: Wait events per account and event nameevents_waits_summary_by_host_by_event_name
: Wait events per host name and event nameevents_waits_summary_by_instance
: Wait events per instanceevents_waits_summary_by_thread_by_event_name
: Wait events per thread and event nameevents_waits_summary_by_user_by_event_name
: Wait events per user name and event nameevents_waits_summary_global_by_event_name
: Wait events per event name
Stage Summaries
events_stages_summary_by_account_by_event_name
: Stage events per account and event nameevents_stages_summary_by_host_by_event_name
: Stage events per host name and event nameevents_stages_summary_by_thread_by_event_name
: Stage waits per thread and event nameevents_stages_summary_by_user_by_event_name
: Stage events per user name and event nameevents_stages_summary_global_by_event_name
: Stage waits per event name
Statement Summaries
events_statements_summary_by_account_by_event_name
: Statement events per account and event nameevents_statements_summary_by_digest
: Statement events per schema and digest valueevents_statements_summary_by_host_by_event_name
: Statement events per host name and event nameevents_statements_summary_by_thread_by_event_name
: Statement events per thread and event nameevents_statements_summary_by_user_by_event_name
: Statement events per user name and event nameevents_statements_summary_global_by_event_name
: Statement events per event name
Object Wait Summaries
objects_summary_global_by_type
: Object summaries
File I/O Summaries
file_summary_by_event_name
: File events per event namefile_summary_by_instance
: File events per file instance
Table I/O and Lock Wait Summaries
table_io_waits_summary_by_index_usage
: Table I/O waits per indextable_io_waits_summary_by_table
: Table I/O waits per tabletable_lock_waits_summary_by_table
: Table lock waits per table
Socket Summaries
socket_summary_by_instance
: Socket waits and I/O per instancesocket_summary_by_event_name
: Socket waits and I/O per event name
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
. Generally, the
effect is to reset the summary columns to 0 or
NULL
, not 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. Exceptions to this truncation behavior are noted in
individual summary table sections.