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https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-porting-mysql.html
Note The daemon_memcached plugin supports inserts and reads on mapped InnoDB tables that have an INTEGER defined as the primary key. CREATE VIEW numbers AS SELECT c1 KEY, CAST(c2 AS UNSIGNED INTEGER) val FROM demo_test WHERE c2 BETWEEN '0' and ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-undo-tablespaces.html
Note In a replication environment, the source and each replica must have its own undo tablespace file directory. Note The InnoDB recovery process requires that undo tablespace files reside in known directories. Note Prior to MySQL 8.0.14, additional ... Undo tablespaces contain undo logs, which are collections of records containing information about how to undo the latest change by a transaction to a clustered index ...
https://dev.mysql.com/doc/refman/8.0/en/json-validation-functions.html
Note MySQL supports regular expression patterns in JSON schema, which supports but silently ignores invalid patterns (see the description of JSON_SCHEMA_VALID() for an example). Beginning with MySQL 8.0.17, MySQL supports validation of JSON ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-api-definition.html
Note For a discussion of MySQL server options for NDB Cluster, see Section 25.4.3.9.1, “MySQL Server Options for NDB Cluster”. Note In NDB 8.0, data node IDs must be less than 145. Note In NDB 8.0, data node IDs must be less than 145. (Bug ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-using-management-client.html
Note NDB Cluster never saves the user-furnished password or generated encryption key. Note If you use the SNAPSHOTSTART option with START BACKUP, and the CompressedBackup parameter is enabled, only the data and control files are compressed—the log ... Before starting a backup, make sure that the cluster is properly configured for performing ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-log-statistics.html
Note A unique index update operation can generate multiple PK read and write operations on the index table and on the base table. Note A single transaction may operate on data stored in multiple LQH blocks. The NDB management client's CLUSTERLOG ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-mgm-definition.html
Note If neither the ExecuteOnComputer nor the HostName parameter is present, the default value localhost is assumed for both. Note Not every facility is necessarily supported by every operating system. Note After making changes in a management ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-command-options.html
Note This feature requires a MySQL client that is compiled with the readline library. Note The mysql client always passes optimizer hints to the server, regardless of whether this option is given. --fido-register-factor=value Command-Line Format ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlbinlog.html
Note When using event groups, the file offsets of events may be grouped together and the comments of events may be grouped together. Note that from MySQL 8.0.14, mysqlbinlog returns a suitable error if you attempt to read an encrypted binary log ...
https://dev.mysql.com/doc/refman/8.0/en/mysqld-multi.html
Note For some Linux platforms, MySQL installation from RPM or Debian packages includes systemd support for managing MySQL server startup and shutdown. Note that you can specify mysqld_safe as the value for this option also. Note that the password ...