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https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html
A candidate object is contained in a target object if and only if for each key in the candidate there is a key with the same name in the target and the value associated with the candidate key is contained in the value associated with the target key.
https://dev.mysql.com/doc/refman/8.0/en/keyring-encrypted-file-component.html
Note component_keyring_encrypted_file is an extension included in MySQL Enterprise Edition, a commercial product. The component_keyring_encrypted_file keyring component stores keyring data in an encrypted, password-protected file local to the ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-file-component.html
The component_keyring_file keyring component stores keyring data in a file local to the server host. Warning For encryption key management, the component_keyring_file and component_keyring_encrypted_file components are not intended as a regulatory ...Both files should be readable only by the appropriate user that runs the server, typically ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-redo-log-reader.html
ndb_redo_log_reader is intended for use primarily by NDB Cluster developers and Support personnel in debugging and diagnosing problems. --file-key, -K Command-Line Format --file-key=key Introduced 8.0.31-ndb-8.0.31 Supply file decryption key using ... Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or ...
https://dev.mysql.com/doc/refman/8.0/en/replication-binlog-encryption.html
To use encryption, a keyring component or plugin must be installed and configured to supply MySQL Server's keyring service. For instructions to do this, see Section 8.4.4, “The MySQL Keyring”. Any supported keyring component or plugin can be ...
https://dev.mysql.com/doc/refman/8.0/en/structured-system-variables.html
MySQL supports one structured variable type, which specifies parameters governing the operation of key caches. A key cache structured variable has these components: key_buffer_size key_cache_block_size key_cache_division_limit ... A structured ...
https://dev.mysql.com/doc/refman/8.0/en/analyze-table.html
ANALYZE TABLE generates table statistics: ANALYZE TABLE without any HISTOGRAM clause performs a key distribution analysis and stores the distribution for the named table or tables. For MyISAM tables, ANALYZE TABLE for key distribution analysis is ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-multiple-get-range-query.html
The daemon_memcached plugin supports multiple get operations (fetching multiple key-value pairs in a single memcached query) and range queries. Multiple get Operations The ability to fetch multiple key-value pairs in a single memcached query ...The ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-tuning.html
get key_value Using System Memory For best performance, deploy the daemon_memcached plugin on machines that are configured as typical database servers, where the majority of system RAM is devoted to the InnoDB buffer pool, through the ... Because ...
https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
Dropping a FOREIGN KEY constraint does not work in replication because the constraint may have another name on the replica. DELETE if you are deleting rows from a table that has foreign keys with ON DELETE CASCADE properties. SELECT if you have ...