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https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-internals.html
mysql> USE innodb_memcache; Database changed mysql> SHOW TABLES; +---------------------------+ | Tables_in_innodb_memcache | +---------------------------+ | cache_policies | | config_options | | containers | +---------------------------+ ... InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/show-processlist.html
SHOW [FULL] PROCESSLIST Important The INFORMATION SCHEMA implementation of SHOW PROCESSLIST is deprecated and subject to removal in a future MySQL release. The MySQL process list indicates the operations currently being performed by the set of ...
https://dev.mysql.com/doc/refman/8.0/en/slow-query-log.html
As of MySQL 8.0.14, the timestamp indicates when the slow statement began executing. The slow query log consists of SQL statements that take more than long_query_time seconds to execute and require at least min_examined_row_limit rows to be ...By ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-events-table.html
TIME_ZONE The event time zone, which is the time zone used for scheduling the event and that is in effect within the event as it executes. EVENT_TYPE The event repetition type, either ONE TIME (transient) or RECURRING (repeating). EXECUTE_AT For a ... The EVENTS table provides information about Event Manager events, which are discussed in Section 27.4, “Using the Event ...
https://dev.mysql.com/doc/refman/8.0/en/creating-tables.html
Age changes as time passes, which means you'd have to update your records often. MySQL provides functions for doing date arithmetic, so this is not difficult. Use a CREATE TABLE statement to specify the layout of your table: mysql> CREATE TABLE pet ...You want a table that contains a record for each of your ...
https://dev.mysql.com/doc/refman/8.0/en/index-condition-pushdown-optimization.html
ICP can reduce the number of times the storage engine must access the base table and the number of times the MySQL server must access the storage engine. Index Condition Pushdown (ICP) is an optimization for the case where MySQL retrieves rows from ...The storage engine then evaluates the pushed index condition by using the index entry and only if this is satisfied is the row read from the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-rbr-safe-unsafe.html
The “safeness” of a statement in MySQL replication refers to whether the statement and its effects can be replicated correctly using statement-based format. Whenever the 50 most recent ER_BINLOG_UNSAFE_STATEMENT warnings have been generated ...
https://dev.mysql.com/doc/refman/8.0/en/setting-environment-variables.html
Section 6.9, “Environment Variables”, lists all environment variables that affect MySQL program operation. For example, on Windows, you can set the USER variable to specify your MySQL account name. Suppose that you want to specify the TCP/IP ...
https://dev.mysql.com/doc/refman/8.0/en/using-log-files.html
You can also try the command EXPLAIN on all SELECT statements that takes a long time to ensure that mysqld is using indexes properly. You can find the queries that take a long time to execute by starting mysqld with the slow query log enabled. Note ...If this works, you should also test all complicated queries that did not ...
https://dev.mysql.com/doc/refman/8.0/en/x-plugin-system-monitoring.html
Issue: mysql-py> \sql SELECT NAME, ENABLED, TIMED FROM performance_schema.setup_instruments WHERE NAME LIKE 'statement/%' AND NOT (ENABLED and TIMED) If this statement reports at least one row, you need to enable the instruments. We use MySQL Shell ... For general X Plugin monitoring, use the status variables that it ...