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https://dev.mysql.com/doc/refman/8.4/en/innodb-statistics-estimation.html
Optimizer statistics are not persisted to disk when innodb_stats_persistent=OFF or when individual tables are created or altered with STATS_PERSISTENT=0. Instead, statistics are stored in memory, and are lost when the server is shut down. Statistics ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-tablespace-autoextend-size.html
By default, when a file-per-table or general tablespace requires additional space, the tablespace is extended incrementally according to the following rules: If the tablespace is less than an extent in size, it is extended one page at a time. If ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-troubleshooting-datadict.html
Information about table definitions is stored in the InnoDB data dictionary. If you move data files around, dictionary data can become inconsistent. If a data dictionary corruption or consistency issue prevents you from starting InnoDB, see Section ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-undo-logs.html
An undo log is a collection of undo log records associated with a single read-write transaction. An undo log record contains information about how to undo the latest change by a transaction to a clustered index record. If another transaction needs ...
https://dev.mysql.com/doc/refman/8.4/en/invoking-programs.html
To invoke a MySQL program from the command line (that is, from your shell or command prompt), enter the program name followed by any options or other arguments needed to instruct the program what you want it to do. $> represents the prompt for your ...
https://dev.mysql.com/doc/refman/8.4/en/ipv6-brokers.html
If you do not have a public IPv6 address that enables your system to communicate over IPv6 outside your local network, you can obtain one from an IPv6 broker. The Wikipedia IPv6 Tunnel Broker page lists several brokers and their features, such as ...
https://dev.mysql.com/doc/refman/8.4/en/ipv6-local-connections.html
The following procedure shows how to configure MySQL to permit IPv6 connections by clients that connect to the local server using the ::1 local host address. Start the MySQL server with an appropriate bind_address setting to permit it to accept ...
https://dev.mysql.com/doc/refman/8.4/en/ipv6-remote-connections.html
The following procedure shows how to configure MySQL to permit IPv6 connections by remote clients. It is similar to the preceding procedure for local clients, but the server and client hosts are distinct and each has its own nonlocal IPv6 address.
https://dev.mysql.com/doc/refman/8.4/en/json-creation-functions.html
The functions listed in this section compose JSON values from component elements. JSON_ARRAY([val[, val] ...]) Evaluates a (possibly empty) list of values and returns a JSON array containing those values. mysql> SELECT JSON_ARRAY(1, "abc", NULL, ...
https://dev.mysql.com/doc/refman/8.4/en/keyring-component-plugin-comparison.html
The MySQL Keyring originally implemented keystore capabilities using server plugins, but began transitioning to use the component infrastructure. This section briefly compares keyring components and plugins to provide an overview of their ...