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https://dev.mysql.com/doc/refman/8.0/en/innodb-file-space.html
One is for nonleaf nodes of the B-tree, the other is for the leaf nodes. When you delete data from a table, InnoDB contracts the corresponding B-tree indexes. A percentage of pages are reserved for future growth so that pages in the B-tree can be ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-memory-tables.html
For best performance with MEMORY tables, examine the kinds of queries against each table, and specify the type to use for each associated index, either a B-tree index or a hash index. On the CREATE INDEX statement, use the clause USING BTREE or ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-buffer-page-lru-table.html
The INNODB_BUFFER_PAGE_LRU table provides information about the pages in the InnoDB buffer pool; in particular, how they are ordered in the LRU list that determines which pages to evict from the buffer pool when it becomes full. The ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
Beginning with this release, MySQL NDB Cluster is being developed in parallel with the standard MySQL 8.0 server under a new unified release model with the following features: NDB 8.0 is developed in, built from, and released with the MySQL 8.0 ...
https://dev.mysql.com/doc/refman/8.0/en/server-side-help-support.html
Prior to MySQL 8.0.16, if you are working with Git and a MySQL development source tree, the source tree contains only a “stub” version of fill_help_tables.sql. MySQL Server supports a HELP statement that returns information from the MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/pluggable-authentication-system-variables.html
This variable can be used to limit the scope of searches by anchoring them at a certain location (the “base”) within the search tree. This variable can be used to limit the scope of searches by anchoring them at a certain location (the ...If ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk.html
The myisamchk utility gets information about your database tables or checks, repairs, or optimizes them. myisamchk works with MyISAM tables (tables that have .MYD and .MYI files for storing data and indexes). You can also use the CHECK TABLE and ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-server.html
mysql.server is the script name as used within the MySQL source tree. It can be found in the support-files directory under the MySQL installation directory or in a MySQL source tree. MySQL distributions on Unix and Unix-like system include a script ...
https://dev.mysql.com/doc/refman/8.0/en/source-installation-prerequisites.html
Some of these tools are needed no matter whether you use a standard source distribution or a development source tree. To install MySQL from a development source tree, the following additional tools are required: The Git revision control system is ...
https://dev.mysql.com/doc/refman/8.0/en/storage-engines.html
Storage engines are MySQL components that handle the SQL operations for different table types. InnoDB is the default and most general-purpose storage engine, and Oracle recommends using it for tables except for specialized use cases. (The CREATE ...