Movatterモバイル変換

Theevents_statements_history table contains theN 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 ofN during server startup. To set the number of rows per thread explicitly, set theperformance_schema_events_statements_history_size system variable at server startup.

Theevents_statements_history table has the same columns and indexing asevents_statements_current. SeeSection 29.12.6.1, “The events_statements_current Table”.

TRUNCATE TABLE is permitted for theevents_statements_history table. It removes the rows.

For more information about the relationship between the threeevents_statements_xxx event tables, seeSection 29.9, “Performance Schema Tables for Current and Historical Events”.

For information about configuring whether to collect statement events, seeSection 29.12.6, “Performance Schema Statement Event Tables”.