prepared_statements_instances
This page is part of MariaDB's Enterprise Documentation.
The parent of this page is: Performance Schema
Topics on this page:
Overview
- In 10.6 ES, 10.6 CS, 10.5 ES, 10.5 CS:
A description for this Performance-schema Table has not yet been added to this Documentation.
- In 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:
Not present
See also: Performance Schema in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS
DETAILS
SCHEMA
CREATE TABLE `prepared_statements_instances` (
`OBJECT_INSTANCE_BEGIN` bigint(20) unsigned NOT NULL COMMENT 'The address in memory of the instrumented prepared statement.',
`STATEMENT_ID` bigint(20) unsigned NOT NULL COMMENT 'The internal statement ID assigned by the server.',
`STATEMENT_NAME` varchar(64) DEFAULT NULL COMMENT 'For the binary protocol, this column is NULL. For the text protocol, this column is the external statement name assigned by the user.',
`SQL_TEXT` longtext NOT NULL COMMENT 'The prepared statement text, with ? placeholder markers.',
`OWNER_THREAD_ID` bigint(20) unsigned NOT NULL COMMENT 'Event thread id that created the prepared statement.',
`OWNER_EVENT_ID` bigint(20) unsigned NOT NULL COMMENT 'Event id that created the prepared statement.',
`OWNER_OBJECT_TYPE` enum('EVENT','FUNCTION','PROCEDURE','TABLE','TRIGGER') DEFAULT NULL COMMENT 'NULL for a prepared statement created by a client session. Type of the stored program that created the prepared statement.',
`OWNER_OBJECT_SCHEMA` varchar(64) DEFAULT NULL COMMENT 'NULL for a prepared statement created by a client session. Schema of the stored program that created the prepared statement.',
`OWNER_OBJECT_NAME` varchar(64) DEFAULT NULL COMMENT 'NULL for a prepared statement created by a client session. Name of the stored program that created the prepared statement.',
`TIMER_PREPARE` bigint(20) unsigned NOT NULL COMMENT 'The time spent executing the statement preparation itself.',
`COUNT_REPREPARE` bigint(20) unsigned NOT NULL COMMENT 'The number of times the statement was reprepared internally.',
`COUNT_EXECUTE` bigint(20) unsigned NOT NULL COMMENT 'Total times the prepared statement was executed.',
`SUM_TIMER_EXECUTE` bigint(20) unsigned NOT NULL COMMENT 'Total time spent executing all prepared statements.',
`MIN_TIMER_EXECUTE` bigint(20) unsigned NOT NULL COMMENT 'Minimum time spent executing any of the prepared statements.',
`AVG_TIMER_EXECUTE` bigint(20) unsigned NOT NULL COMMENT 'Average time spent executing any of the prepared statements.',
`MAX_TIMER_EXECUTE` bigint(20) unsigned NOT NULL COMMENT 'Maximum time spent executing any of the prepared statements.',
`SUM_LOCK_TIME` bigint(20) unsigned NOT NULL COMMENT 'The total time spent (in picoseconds) waiting for table locks for the prepared statements.',
`SUM_ERRORS` bigint(20) unsigned NOT NULL COMMENT 'The total number of errors that occurend for the prepared statements.',
`SUM_WARNINGS` bigint(20) unsigned NOT NULL COMMENT 'The total number of warnings that occurend for the prepared statements.',
`SUM_ROWS_AFFECTED` bigint(20) unsigned NOT NULL COMMENT 'The total number of affected rows by the prepared statements.',
`SUM_ROWS_SENT` bigint(20) unsigned NOT NULL COMMENT 'The total number of rows returned by the prepared statements.',
`SUM_ROWS_EXAMINED` bigint(20) unsigned NOT NULL COMMENT 'The total number of rows examined by the prepared statements.',
`SUM_CREATED_TMP_DISK_TABLES` bigint(20) unsigned NOT NULL COMMENT 'The total number of on-disk temporary tables created by the prepared statements.',
`SUM_CREATED_TMP_TABLES` bigint(20) unsigned NOT NULL COMMENT 'The total number of in-memory temporary tables created by the prepared statements.',
`SUM_SELECT_FULL_JOIN` bigint(20) unsigned NOT NULL COMMENT 'The total number of full joins executed by the prepared statements.',
`SUM_SELECT_FULL_RANGE_JOIN` bigint(20) unsigned NOT NULL COMMENT 'The total number of range search joins executed by the prepared statements.',
`SUM_SELECT_RANGE` bigint(20) unsigned NOT NULL COMMENT 'The total number of joins that used ranges on the first table executed by the prepared statements.',
`SUM_SELECT_RANGE_CHECK` bigint(20) unsigned NOT NULL COMMENT 'The total number of joins that check for key usage after each row executed by the prepared statements.',
`SUM_SELECT_SCAN` bigint(20) unsigned NOT NULL COMMENT 'The total number of joins that did a full scan of the first table executed by the prepared statements.',
`SUM_SORT_MERGE_PASSES` bigint(20) unsigned NOT NULL COMMENT 'The total number of merge passes that the sort algorithm has had to do for the prepared statements.',
`SUM_SORT_RANGE` bigint(20) unsigned NOT NULL COMMENT 'The total number of sorts that were done using ranges for the prepared statements.',
`SUM_SORT_ROWS` bigint(20) unsigned NOT NULL COMMENT 'The total number of sorted rows that were sorted by the prepared statements.',
`SUM_SORT_SCAN` bigint(20) unsigned NOT NULL COMMENT 'The total number of sorts that were done by scanning the table by the prepared statements.',
`SUM_NO_INDEX_USED` bigint(20) unsigned NOT NULL COMMENT 'The total number of statements that performed a table scan without using an index.',
`SUM_NO_GOOD_INDEX_USED` bigint(20) unsigned NOT NULL COMMENT 'The total number of statements where no good index was found.'
)
CHANGE HISTORY
Release Series | History |
|---|---|
10.6 Enterprise |
|
10.6 Community |
|
10.5 Enterprise |
|
10.5 Community |
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10.4 Enterprise |
|
10.4 Community |
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10.3 Enterprise |
|
10.3 Community |
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10.2 Enterprise |
|
10.2 Community |
|
EXTERNAL REFERENCES
Information specific to MariaDB SkySQL can be found on the prepared_statements_instances page in the SkySQL Documentation.