25.12.6.2 The events_statements_history Table
The events_statements_history
table contains the N
most recent statement events that have ended per thread. Statement events are not added to the table until they have ended. When the table contains the maximum number of rows for a given thread, the oldest thread row is discarded when a new row for that thread is added. When a thread ends, all its rows are discarded.
The Performance Schema autosizes the value of N
during server startup. To set the number of rows per thread explicitly, set the performance_schema_events_statements_history_size
system variable at server startup.
The events_statements_history
table has the same columns as events_statements_current
. See Section 25.12.6.1, “The events_statements_current Table”.
TRUNCATE TABLE
is permitted for the events_statements_history
table. It removes the rows.
For more information about the relationship between the three events_statements_
event tables, see Section 25.9, “Performance Schema Tables for Current and Historical Events”. xxx
For information about configuring whether to collect statement events, see Section 25.12.6, “Performance Schema Statement Event Tables”.