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26.12.6.2 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 and indexing as
events_statements_current
. See
Section 26.12.6.1, “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 26.9, “Performance Schema Tables for Current and Historical Events”.
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For information about configuring whether to collect statement events, see Section 26.12.6, “Performance Schema Statement Event Tables”.
Document created the 26/06/2006, last modified the 26/10/2018
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