Description:
Hi,
In MySQL 8 , there were many indexes added to Performance Schema, like there is an index `events_statements_current` and on `events_statements_history` tables but there is no index on `events_statements_history_long` table.
Could we have the same index on `events_statements_history_long` table as well?
How to repeat:
mysql [localhost] {msandbox} (performance_schema) > show create table events_statements_history_long\G
*************************** 1. row ***************************
Table: events_statements_history_long
Create Table: CREATE TABLE `events_statements_history_long` (
`THREAD_ID` bigint(20) unsigned NOT NULL,
`EVENT_ID` bigint(20) unsigned NOT NULL,
`END_EVENT_ID` bigint(20) unsigned DEFAULT NULL,
`EVENT_NAME` varchar(128) NOT NULL,
`SOURCE` varchar(64) DEFAULT NULL,
`TIMER_START` bigint(20) unsigned DEFAULT NULL,
`TIMER_END` bigint(20) unsigned DEFAULT NULL,
`TIMER_WAIT` bigint(20) unsigned DEFAULT NULL,
`LOCK_TIME` bigint(20) unsigned NOT NULL,
`SQL_TEXT` longtext,
`DIGEST` varchar(64) DEFAULT NULL,
`DIGEST_TEXT` longtext,
`CURRENT_SCHEMA` varchar(64) DEFAULT NULL,
`OBJECT_TYPE` varchar(64) DEFAULT NULL,
`OBJECT_SCHEMA` varchar(64) DEFAULT NULL,
`OBJECT_NAME` varchar(64) DEFAULT NULL,
`OBJECT_INSTANCE_BEGIN` bigint(20) unsigned DEFAULT NULL,
`MYSQL_ERRNO` int(11) DEFAULT NULL,
`RETURNED_SQLSTATE` varchar(5) DEFAULT NULL,
`MESSAGE_TEXT` varchar(128) DEFAULT NULL,
`ERRORS` bigint(20) unsigned NOT NULL,
`WARNINGS` bigint(20) unsigned NOT NULL,
`ROWS_AFFECTED` bigint(20) unsigned NOT NULL,
`ROWS_SENT` bigint(20) unsigned NOT NULL,
`ROWS_EXAMINED` bigint(20) unsigned NOT NULL,
`CREATED_TMP_DISK_TABLES` bigint(20) unsigned NOT NULL,
`CREATED_TMP_TABLES` bigint(20) unsigned NOT NULL,
`SELECT_FULL_JOIN` bigint(20) unsigned NOT NULL,
`SELECT_FULL_RANGE_JOIN` bigint(20) unsigned NOT NULL,
`SELECT_RANGE` bigint(20) unsigned NOT NULL,
`SELECT_RANGE_CHECK` bigint(20) unsigned NOT NULL,
`SELECT_SCAN` bigint(20) unsigned NOT NULL,
`SORT_MERGE_PASSES` bigint(20) unsigned NOT NULL,
`SORT_RANGE` bigint(20) unsigned NOT NULL,
`SORT_ROWS` bigint(20) unsigned NOT NULL,
`SORT_SCAN` bigint(20) unsigned NOT NULL,
`NO_INDEX_USED` bigint(20) unsigned NOT NULL,
`NO_GOOD_INDEX_USED` bigint(20) unsigned NOT NULL,
`NESTING_EVENT_ID` bigint(20) unsigned DEFAULT NULL,
`NESTING_EVENT_TYPE` enum('TRANSACTION','STATEMENT','STAGE','WAIT') DEFAULT NULL,
`NESTING_EVENT_LEVEL` int(11) DEFAULT NULL
) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
No index.
Suggested fix:
Adding an index on `events_statements_history_long` table.
Description: Hi, In MySQL 8 , there were many indexes added to Performance Schema, like there is an index `events_statements_current` and on `events_statements_history` tables but there is no index on `events_statements_history_long` table. Could we have the same index on `events_statements_history_long` table as well? How to repeat: mysql [localhost] {msandbox} (performance_schema) > show create table events_statements_history_long\G *************************** 1. row *************************** Table: events_statements_history_long Create Table: CREATE TABLE `events_statements_history_long` ( `THREAD_ID` bigint(20) unsigned NOT NULL, `EVENT_ID` bigint(20) unsigned NOT NULL, `END_EVENT_ID` bigint(20) unsigned DEFAULT NULL, `EVENT_NAME` varchar(128) NOT NULL, `SOURCE` varchar(64) DEFAULT NULL, `TIMER_START` bigint(20) unsigned DEFAULT NULL, `TIMER_END` bigint(20) unsigned DEFAULT NULL, `TIMER_WAIT` bigint(20) unsigned DEFAULT NULL, `LOCK_TIME` bigint(20) unsigned NOT NULL, `SQL_TEXT` longtext, `DIGEST` varchar(64) DEFAULT NULL, `DIGEST_TEXT` longtext, `CURRENT_SCHEMA` varchar(64) DEFAULT NULL, `OBJECT_TYPE` varchar(64) DEFAULT NULL, `OBJECT_SCHEMA` varchar(64) DEFAULT NULL, `OBJECT_NAME` varchar(64) DEFAULT NULL, `OBJECT_INSTANCE_BEGIN` bigint(20) unsigned DEFAULT NULL, `MYSQL_ERRNO` int(11) DEFAULT NULL, `RETURNED_SQLSTATE` varchar(5) DEFAULT NULL, `MESSAGE_TEXT` varchar(128) DEFAULT NULL, `ERRORS` bigint(20) unsigned NOT NULL, `WARNINGS` bigint(20) unsigned NOT NULL, `ROWS_AFFECTED` bigint(20) unsigned NOT NULL, `ROWS_SENT` bigint(20) unsigned NOT NULL, `ROWS_EXAMINED` bigint(20) unsigned NOT NULL, `CREATED_TMP_DISK_TABLES` bigint(20) unsigned NOT NULL, `CREATED_TMP_TABLES` bigint(20) unsigned NOT NULL, `SELECT_FULL_JOIN` bigint(20) unsigned NOT NULL, `SELECT_FULL_RANGE_JOIN` bigint(20) unsigned NOT NULL, `SELECT_RANGE` bigint(20) unsigned NOT NULL, `SELECT_RANGE_CHECK` bigint(20) unsigned NOT NULL, `SELECT_SCAN` bigint(20) unsigned NOT NULL, `SORT_MERGE_PASSES` bigint(20) unsigned NOT NULL, `SORT_RANGE` bigint(20) unsigned NOT NULL, `SORT_ROWS` bigint(20) unsigned NOT NULL, `SORT_SCAN` bigint(20) unsigned NOT NULL, `NO_INDEX_USED` bigint(20) unsigned NOT NULL, `NO_GOOD_INDEX_USED` bigint(20) unsigned NOT NULL, `NESTING_EVENT_ID` bigint(20) unsigned DEFAULT NULL, `NESTING_EVENT_TYPE` enum('TRANSACTION','STATEMENT','STAGE','WAIT') DEFAULT NULL, `NESTING_EVENT_LEVEL` int(11) DEFAULT NULL ) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci No index. Suggested fix: Adding an index on `events_statements_history_long` table.