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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-issues.html
Note Every NDB table is implicitly partitioned by key when it is created. Restarting the cluster with the --initial option causes the sequence of GCI and epoch numbers to start over from 0. This section discusses known problems or issues when using ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-functions.html
For this reason, if you select from the replica's copy of mytable after the CREATE TABLE and INSERT statements just shown have been replicated, you might expect mycol to contain the value 2009-09-01 18:00:00. Certain functions do not replicate well ...
https://dev.mysql.com/doc/refman/8.0/en/replication-upgrade.html
Behavior Changes Between Releases Although this upgrade sequence is correct, it is possible to still encounter replication difficulties when replicating from a source at an earlier release that has not yet been upgraded, to a replica at a later ...
https://dev.mysql.com/doc/refman/8.0/en/security-guidelines.html
A passphrase containing multiple words is easy to create, remember, and reproduce, and is much more secure than a typical user-selected password consisting of a single modified word or a predictable sequence of characters. To create a secure ...
https://dev.mysql.com/doc/refman/8.0/en/account-locking.html
MySQL supports locking and unlocking user accounts using the ACCOUNT LOCK and ACCOUNT UNLOCK clauses for the CREATE USER and ALTER USER statements: When used with CREATE USER, these clauses specify the initial locking state for a new account. In ...
https://dev.mysql.com/doc/refman/8.0/en/alter-logfile-group.html
You can verify that the UNDO files were created and obtain information about them by querying the Information Schema FILES table. ALTER LOGFILE GROUP logfile_group ADD UNDOFILE 'file_name' [INITIAL_SIZE [=] size] [WAIT] ENGINE [=] engine_name This ...
https://dev.mysql.com/doc/refman/8.0/en/analyze-table.html
The sampling-rate value in the HISTOGRAM column of the Information Schema COLUMN_STATISTICS table can be queried to determine the fraction of data that was sampled to create the histogram. row *************************** Table: employees.employees ...ANALYZE [NO_WRITE_TO_BINLOG | LOCAL] TABLE tbl_name UPDATE HISTOGRAM ON col_name [, col_name] ...
https://dev.mysql.com/doc/refman/8.0/en/backup-methods.html
You can also create a binary backup simply by copying the table files, as long as the server is not updating anything. Making Delimited-Text File Backups To create a text file containing a table's data, you can use SELECT * INTO OUTFILE 'file_name' ...Making a Hot Backup with MySQL Enterprise Backup Customers of MySQL Enterprise Edition can use the MySQL Enterprise Backup product to do physical backups of entire instances or selected databases, tables, or ...
https://dev.mysql.com/doc/refman/8.0/en/backup-types.html
Logical backups save information represented as logical database structure (CREATE DATABASE, CREATE TABLE statements) and content (INSERT statements or delimited-text files). This type of backup is suitable for smaller amounts of data where you ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log-mysql-database.html
The contents of the grant tables in the mysql database can be modified directly (for example, with INSERT or DELETE) or indirectly (for example, with GRANT or CREATE USER). This pertains to statements such as GRANT, REVOKE, SET PASSWORD, RENAME ...