Performance Schema events_statements_summary_by_thread_by_event_name Table
The Performance Schema events_statements_summary_by_thread_by_event_name table contains statement events summarized by thread and event name. It contains the following columns:
| Column | Description |
|---|---|
THREAD_ID | Thread associated with the event. Together with EVENT_NAME uniquely identifies the row. |
EVENT_NAME | Event name. Used together with THREAD_ID for grouping events. |
COUNT_STAR | Number of summarized events |
SUM_TIMER_WAIT | Total wait time of the summarized events that are timed. |
MIN_TIMER_WAIT | Minimum wait time of the summarized events that are timed. |
AVG_TIMER_WAIT | Average wait time of the summarized events that are timed. |
MAX_TIMER_WAIT | Maximum wait time of the summarized events that are timed. |
SUM_LOCK_TIME | Sum of the LOCK_TIME column in the events_statements_current table. |
SUM_ERRORS | Sum of the ERRORS column in the events_statements_current table. |
SUM_WARNINGS | Sum of the WARNINGS column in the events_statements_current table. |
SUM_ROWS_AFFECTED | Sum of the ROWS_AFFECTED column in the events_statements_current table. |
SUM_ROWS_SENT | Sum of the ROWS_SENT column in the events_statements_current table. |
SUM_ROWS_EXAMINED | Sum of the ROWS_EXAMINED column in the events_statements_current table. |
SUM_CREATED_TMP_DISK_TABLES | Sum of the CREATED_TMP_DISK_TABLES column in the events_statements_current table. |
SUM_CREATED_TMP_TABLES | Sum of the CREATED_TMP_TABLES column in the events_statements_current table. |
SUM_SELECT_FULL_JOIN | Sum of the SELECT_FULL_JOIN column in the events_statements_current table. |
SUM_SELECT_FULL_RANGE_JOIN | Sum of the SELECT_FULL_RANGE_JOIN column in the events_statements_current table. |
SUM_SELECT_RANGE | Sum of the SELECT_RANGE column in the events_statements_current table. |
SUM_SELECT_RANGE_CHECK | Sum of the SELECT_RANGE_CHECK column in the events_statements_current table. |
SUM_SELECT_SCAN | Sum of the SELECT_SCAN column in the events_statements_current table. |
SUM_SORT_MERGE_PASSES | Sum of the SORT_MERGE_PASSES column in the events_statements_current table. |
SUM_SORT_RANGE | Sum of the SORT_RANGE column in the events_statements_current table. |
SUM_SORT_ROWS | Sum of the SORT_ROWS column in the events_statements_current table. |
SUM_SORT_SCAN | Sum of the SORT_SCAN column in the events_statements_current table. |
SUM_NO_INDEX_USED | Sum of the NO_INDEX_USED column in the events_statements_current table. |
SUM_NO_GOOD_INDEX_USED | Sum of the NO_GOOD_INDEX_USED column in the events_statements_current table. |
The *_TIMER_WAIT columns only calculate results for timed events, as non-timed events have a NULL wait time.
Example
SELECT * FROM events_statements_summary_by_thread_by_event_name\G
...
*************************** 3653. row ***************************
THREAD_ID: 64
EVENT_NAME: statement/com/Error
COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
SUM_LOCK_TIME: 0
SUM_ERRORS: 0
SUM_WARNINGS: 0
SUM_ROWS_AFFECTED: 0
SUM_ROWS_SENT: 0
SUM_ROWS_EXAMINED: 0
SUM_CREATED_TMP_DISK_TABLES: 0
SUM_CREATED_TMP_TABLES: 0
SUM_SELECT_FULL_JOIN: 0
SUM_SELECT_FULL_RANGE_JOIN: 0
SUM_SELECT_RANGE: 0
SUM_SELECT_RANGE_CHECK: 0
SUM_SELECT_SCAN: 0
SUM_SORT_MERGE_PASSES: 0
SUM_SORT_RANGE: 0
SUM_SORT_ROWS: 0
SUM_SORT_SCAN: 0
SUM_NO_INDEX_USED: 0
SUM_NO_GOOD_INDEX_USED: 0
*************************** 3654. row ***************************
THREAD_ID: 64
EVENT_NAME: statement/com/
COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
SUM_LOCK_TIME: 0
SUM_ERRORS: 0
SUM_WARNINGS: 0
SUM_ROWS_AFFECTED: 0
SUM_ROWS_SENT: 0
SUM_ROWS_EXAMINED: 0
SUM_CREATED_TMP_DISK_TABLES: 0
SUM_CREATED_TMP_TABLES: 0
SUM_SELECT_FULL_JOIN: 0
SUM_SELECT_FULL_RANGE_JOIN: 0
SUM_SELECT_RANGE: 0
SUM_SELECT_RANGE_CHECK: 0
SUM_SELECT_SCAN: 0
SUM_SORT_MERGE_PASSES: 0
SUM_SORT_RANGE: 0
SUM_SORT_ROWS: 0
SUM_SORT_SCAN: 0
SUM_NO_INDEX_USED: 0
SUM_NO_GOOD_INDEX_USED: 0
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