26.12.6.3 The events_statements_history_long Table

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The events_statements_history_long table contains the N most recent statement events that have ended globally, across all threads. Statement events are not added to the table until they have ended. When the table becomes full, the oldest row is discarded when a new row is added, regardless of which thread generated either row.

The value of N is autosized at server startup. To set the table size explicitly, set the performance_schema_events_statements_history_long_size system variable at server startup.

The events_statements_history_long table has the same columns as events_statements_current. See Section 26.12.6.1, “The events_statements_current Table”. Unlike events_statements_current, events_statements_history_long has no indexing.

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

For more information about the relationship between the three events_statements_xxx event tables, see Section 26.9, “Performance Schema Tables for Current and Historical Events”.

For information about configuring whether to collect statement events, see Section 26.12.6, “Performance Schema Statement Event Tables”.

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Document created the 26/06/2006, last modified the 26/10/2018
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Manuel MySQL : https://dev.mysql.com/

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