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https://dev.mysql.com/doc/refman/8.4/en/linux-installation-apt-repo.html
Although this is not required for each update, it does update MySQL repository information to include the current information, which includes adding a new LTS series. Update package information from the MySQL APT repository with the following ...
https://dev.mysql.com/doc/refman/8.4/en/loading-tables.html
For missing values (such as unknown sexes or death dates for animals that are still living), you can use NULL values. Suppose that Diane gets a new hamster named “Puffball.” You could add a new record using an INSERT statement like this: mysql> ...Suppose that your pet records can be described as shown ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-online-add-node-example.html
You can verify that all existing data nodes were restarted using the updated configuration by checking the ndbinfo.nodes table in the mysql client. In this section we provide a detailed example illustrating how to add new NDB Cluster data nodes ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-linear-hash.html
MySQL also supports linear hashing, which differs from regular hashing in that linear hashing utilizes a linear powers-of-two algorithm whereas regular hashing employs the modulus of the hashing function's value. We call this value V; it can be ...
https://dev.mysql.com/doc/refman/8.4/en/server-options.html
--sql-mode=value[,value[,value...]] Command-Line Format --sql-mode=name System Variable sql_mode Scope Global, Session Dynamic Yes SET_VAR Hint Applies Yes Type Set Default Value ONLY_FULL_GROUP_BY STRICT_TRANS_TABLES NO_ZERO_IN_DATE NO_ZERO_DATE ...
https://dev.mysql.com/doc/refman/8.4/en/timestamp-initialization.html
TIMESTAMP and DATETIME columns can be automatically initialized and updated to the current date and time (that is, the current timestamp). For any TIMESTAMP or DATETIME column in a table, you can assign the current timestamp as the default value, ...If both are present in a column definition, either can occur ...
https://dev.mysql.com/doc/refman/8.4/en/type-conversion.html
If one of the arguments is a TIMESTAMP or DATETIME column and the other argument is a constant, the constant is converted to a timestamp before the comparison is performed. To be safe, always use complete datetime, date, or time strings when doing ... When an operator is used with operands of different types, type conversion occurs to make the operands ...
https://dev.mysql.com/doc/refman/8.4/en/upgrading-what-is-upgraded.html
If the actual data dictionary version is lower than the current expected version, the server creates data dictionary tables with updated definitions, copies persisted metadata to the new tables, atomically replaces the old tables with the new ones, ... Installing a new version of MySQL may require upgrading these parts of the existing installation: The mysql system schema, which contains tables that store information required by the MySQL server as it runs (see Section 7.3, “The mysql System ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-capacity-options.html
For compression or incremental backup operations, the buffer size is slightly more than 16MB to accommodate the headers. The option is ignored for other operations like single-file backups (uses 1 write thread always), list-image (uses no write ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-commands-update.html
There are two types of operations to bring your backup data up-to-date: Apply-log Operation After a backup job was first completed, the backup data might not be in a consistent state, because data could have been inserted, updated, or deleted while ...During a backup, mysqlbackup also copies the accumulated InnoDB log to a file called ...