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https://dev.mysql.com/doc/refman/8.0/en/program-options.html
There are several ways to specify options for MySQL programs: List the options on the command line following the program name. This is common for options that you want the program to use each time it runs. This method is useful for options that you ...This is common for options that apply to a specific invocation of the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-change-buffer.html
Merging cached changes at a later time, when affected pages are read into the buffer pool by other operations, avoids substantial random access I/O that would be required to read secondary index pages into the buffer pool from disk. During this ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-storage-engine.html
Table 18.2 MyISAM Storage Engine Features Feature Support B-tree indexes Yes Backup/point-in-time recovery (Implemented in the server, rather than in the storage engine.) Yes Cluster database support No Clustered indexes No Compressed data Yes ...
https://dev.mysql.com/doc/refman/8.0/en/ibd2sdi.html
ibd2sdi can be run on file-per-table tablespace files (*.ibd files), general tablespace files (*.ibd files), system tablespace files (ibdata* files), and the data dictionary tablespace (mysql.ibd). ibd2sdi can be used at runtime or while the server ... ibd2sdi is a utility for extracting serialized dictionary information (SDI) from InnoDB tablespace ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-temporary-tablespace.html
Beginning with MySQL 8.0.16, the storage engine used for on-disk internal temporary tables is InnoDB. Because the pool of session temporary tablespaces is recreated each time the server is started, space IDs for session temporary tablespaces are not ... InnoDB uses session temporary tablespaces and a global temporary ...
https://dev.mysql.com/doc/refman/8.0/en/sys-diagnostics.html
Parameters in_max_runtime INT UNSIGNED: The maximum data collection time in seconds. in_interval INT UNSIGNED: The sleep time between data collections in seconds. Note The more instruments and consumers enabled, the more impact on MySQL server ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-filter-definitions.html
For information about using JSON data in MySQL, see Section 13.5, “The JSON Data Type”. From MySQL 8.0.28, the AUDIT_ABORT_EXEMPT privilege is available to permit a user account’s queries to always be executed even if an abort item would block ...Filter definitions have this form, where actions indicates how filtering takes place: { "filter": actions } The following discussion describes permitted constructs in filter ...
https://dev.mysql.com/doc/refman/8.0/en/backup-strategy-example.html
Assume also that the MySQL server is under load at the time of the crash. You should include such options as necessary to enable client programs to connect to the MySQL server. For cases of operating system crashes or power failures, we can assume ...Assume that data is stored in the InnoDB storage engine, which has support for transactions and automatic crash ...
https://dev.mysql.com/doc/refman/8.0/en/constraint-foreign-key.html
MATCH options do not have any other effect in MySQL, which in effect enforces MATCH SIMPLE semantics full-time. MySQL supports ON UPDATE and ON DELETE foreign key references in CREATE TABLE and ALTER TABLE statements. SET DEFAULT is also supported ... Foreign keys let you cross-reference related data across tables, and foreign key constraints help keep this spread-out data ...
https://dev.mysql.com/doc/refman/8.0/en/create-logfile-group.html
There can be only one log file group per NDB Cluster instance at any given time. If ENGINE is not set, MySQL tries to use the engine specified by the default_storage_engine server system variable (formerly storage_engine). REDO_BUFFER_SIZE, ...