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https://dev.mysql.com/doc/refman/8.0/en/blackhole-storage-engine.html
The BLACKHOLE storage engine acts as a “black hole” that accepts data but throws it away and does not store it. To examine the source for the BLACKHOLE engine, look in the sql directory of a MySQL source distribution. When you create a ...
https://dev.mysql.com/doc/refman/8.0/en/bnl-bka-optimization.html
In MySQL, a Batched Key Access (BKA) Join algorithm is available that uses both index access to the joined table and a join buffer. The BKA algorithm supports inner join, outer join, and semijoin operations, including nested outer joins. Benefits ...
https://dev.mysql.com/doc/refman/8.0/en/charset-database.html
Every database has a database character set and a database collation. The CREATE DATABASE and ALTER DATABASE statements have optional clauses for specifying the database character set and collation: CREATE DATABASE db_name [[DEFAULT] CHARACTER SET ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-installation.html
This section describes how to install and configure the clone plugin. For remote cloning operations, the clone plugin must be installed on the donor and recipient MySQL server instances. For general information about installing or uninstalling ...
https://dev.mysql.com/doc/refman/8.0/en/column-indexes.html
The most common type of index involves a single column, storing copies of the values from that column in a data structure, allowing fast lookups for the rows with the corresponding column values. The B-tree data structure lets the index quickly ...
https://dev.mysql.com/doc/refman/8.0/en/connection-control-plugin-installation.html
This section describes how to install the connection control plugins, CONNECTION_CONTROL and CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS. For general information about installing plugins, see Section 7.6.1, “Installing and Uninstalling Plugins”.
https://dev.mysql.com/doc/refman/8.0/en/connection-control-plugin-variables.html
This section describes the system and status variables that the CONNECTION_CONTROL plugin provides to enable its operation to be configured and monitored. If an account has reached the point where connection responses are delayed, a delay also ...
https://dev.mysql.com/doc/refman/8.0/en/crashing.html
Each MySQL version is tested on many platforms before it is released. This does not mean that there are no bugs in MySQL, but if there are bugs, they should be very few and can be hard to find. If you have a problem, it always helps if you try to ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-secondary-indexes.html
A secondary index defined on a virtual column is sometimes referred to as a “virtual index”. A secondary index may be created on one or more virtual columns or on a combination of virtual columns and regular columns or stored generated columns.
https://dev.mysql.com/doc/refman/8.0/en/ddl-rewriter-installation.html
This section describes how to install or uninstall the ddl_rewriter plugin. For general information about installing plugins, see Section 7.6.1, “Installing and Uninstalling Plugins”. Note If installed, the ddl_rewriter plugin involves some ...