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1f51d6c0f6
- Added missing information about database of corresponding table for various types of commands - Update some typos - Reviewed by: <vicentiu@mariadb.org>
63 lines
5.3 KiB
Text
63 lines
5.3 KiB
Text
select * from performance_schema.events_statements_summary_by_digest
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where digest like 'XXYYZZ%' limit 1;
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SCHEMA_NAME DIGEST DIGEST_TEXT COUNT_STAR SUM_TIMER_WAIT MIN_TIMER_WAIT AVG_TIMER_WAIT MAX_TIMER_WAIT SUM_LOCK_TIME SUM_ERRORS SUM_WARNINGS SUM_ROWS_AFFECTED SUM_ROWS_SENT SUM_ROWS_EXAMINED SUM_CREATED_TMP_DISK_TABLES SUM_CREATED_TMP_TABLES SUM_SELECT_FULL_JOIN SUM_SELECT_FULL_RANGE_JOIN SUM_SELECT_RANGE SUM_SELECT_RANGE_CHECK SUM_SELECT_SCAN SUM_SORT_MERGE_PASSES SUM_SORT_RANGE SUM_SORT_ROWS SUM_SORT_SCAN SUM_NO_INDEX_USED SUM_NO_GOOD_INDEX_USED FIRST_SEEN LAST_SEEN
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select * from performance_schema.events_statements_summary_by_digest
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where digest='XXYYZZ';
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SCHEMA_NAME DIGEST DIGEST_TEXT COUNT_STAR SUM_TIMER_WAIT MIN_TIMER_WAIT AVG_TIMER_WAIT MAX_TIMER_WAIT SUM_LOCK_TIME SUM_ERRORS SUM_WARNINGS SUM_ROWS_AFFECTED SUM_ROWS_SENT SUM_ROWS_EXAMINED SUM_CREATED_TMP_DISK_TABLES SUM_CREATED_TMP_TABLES SUM_SELECT_FULL_JOIN SUM_SELECT_FULL_RANGE_JOIN SUM_SELECT_RANGE SUM_SELECT_RANGE_CHECK SUM_SELECT_SCAN SUM_SORT_MERGE_PASSES SUM_SORT_RANGE SUM_SORT_ROWS SUM_SORT_SCAN SUM_NO_INDEX_USED SUM_NO_GOOD_INDEX_USED FIRST_SEEN LAST_SEEN
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insert into performance_schema.events_statements_summary_by_digest
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set digest='XXYYZZ', count_star=1, sum_timer_wait=2, min_timer_wait=3,
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avg_timer_wait=4, max_timer_wait=5;
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ERROR 42000: INSERT command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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update performance_schema.events_statements_summary_by_digest
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set count_star=12;
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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update performance_schema.events_statements_summary_by_digest
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set count_star=12 where digest like "XXYYZZ";
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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delete from performance_schema.events_statements_summary_by_digest
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where count_star=1;
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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delete from performance_schema.events_statements_summary_by_digest;
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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LOCK TABLES performance_schema.events_statements_summary_by_digest READ;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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UNLOCK TABLES;
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LOCK TABLES performance_schema.events_statements_summary_by_digest WRITE;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`events_statements_summary_by_digest`
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UNLOCK TABLES;
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#
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# MDEV-25325 column_comment for performance_schema tables
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#
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select column_name, column_comment
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from information_schema.columns
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where table_schema='performance_schema' and table_name='events_statements_summary_by_digest';
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column_name column_comment
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SCHEMA_NAME Database name. Records are summarised together with DIGEST.
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DIGEST Performance Schema digest. Records are summarised together with SCHEMA NAME.
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DIGEST_TEXT The unhashed form of the digest.
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COUNT_STAR Number of summarized events
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SUM_TIMER_WAIT Total wait time of the summarized events that are timed.
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MIN_TIMER_WAIT Minimum wait time of the summarized events that are timed.
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AVG_TIMER_WAIT Average wait time of the summarized events that are timed.
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MAX_TIMER_WAIT Maximum wait time of the summarized events that are timed.
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SUM_LOCK_TIME Sum of the LOCK_TIME column in the events_statements_current table.
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SUM_ERRORS Sum of the ERRORS column in the events_statements_current table.
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SUM_WARNINGS Sum of the WARNINGS column in the events_statements_current table.
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SUM_ROWS_AFFECTED Sum of the ROWS_AFFECTED column in the events_statements_current table.
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SUM_ROWS_SENT Sum of the ROWS_SENT column in the events_statements_current table.
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SUM_ROWS_EXAMINED Sum of the ROWS_EXAMINED column in the events_statements_current table.
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SUM_CREATED_TMP_DISK_TABLES Sum of the CREATED_TMP_DISK_TABLES column in the events_statements_current table.
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SUM_CREATED_TMP_TABLES Sum of the CREATED_TMP_TABLES column in the events_statements_current table.
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SUM_SELECT_FULL_JOIN Sum of the SELECT_FULL_JOIN column in the events_statements_current table.
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SUM_SELECT_FULL_RANGE_JOIN Sum of the SELECT_FULL_RANGE_JOIN column in the events_statements_current table.
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SUM_SELECT_RANGE Sum of the SELECT_RANGE column in the events_statements_current table.
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SUM_SELECT_RANGE_CHECK Sum of the SELECT_RANGE_CHECK column in the events_statements_current table.
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SUM_SELECT_SCAN Sum of the SELECT_SCAN column in the events_statements_current table.
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SUM_SORT_MERGE_PASSES Sum of the SORT_MERGE_PASSES column in the events_statements_current table.
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SUM_SORT_RANGE Sum of the SORT_RANGE column in the events_statements_current table.
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SUM_SORT_ROWS Sum of the SORT_ROWS column in the events_statements_current table.
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SUM_SORT_SCAN Sum of the SORT_SCAN column in the events_statements_current table.
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SUM_NO_INDEX_USED Sum of the NO_INDEX_USED column in the events_statements_current table.
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SUM_NO_GOOD_INDEX_USED Sum of the NO_GOOD_INDEX_USED column in the events_statements_current table.
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FIRST_SEEN Time at which the digest was first seen.
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LAST_SEEN Time at which the digest was most recently seen.
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