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https://dev.mysql.com/doc/refman/8.0/en/mysqld-safe.html
Messages are written to the default error log file (host_name.err in the data directory), or to a named file if the --log-error option is given. Note The innodb_buffer_pool_in_core_file variable can be used to reduce the size of core files on ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-cloning.html
You cannot use the group_replication_clone_threshold system variable to deactivate cloning when the required transactions are not available in any member's binary log files, because in that situation cloning is the only alternative to transferring ...To use cloning, at least one existing group member and the joining member must be set up beforehand to support remote cloning ...If you want to use remote cloning ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-usage.html
They are good for encrypting small amounts of data and creating and verifying signatures. This example works with both the component function and the legacy function: SET @priv1 = create_asymmetric_priv_key('RSA', 2048); SELECT ... To use MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-requirements.html
Infrastructure Server Instance Configuration Server instances that you want to use for Group Replication must satisfy the following requirements. Moreover, InnoDB provides some additional functionality that enables better management and handling of ...Transactions are executed optimistically and then, at commit time, are checked for ...This enables Group Replication to ...
https://dev.mysql.com/doc/refman/8.0/en/handler.html
This statement works for InnoDB tables as well, but there is no such concept because there is no separate data file. If you do not use an alias, but open the table using a table name qualified by the database name, further references must use the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-nodes.html
config_generation The version of the cluster configuration file in use on this data node. This table contains information on the status of data nodes. For each data node that is running in the cluster, a corresponding row in this table provides the ...For nodes that are starting, it also shows the current start ...This is one of: NOTHING, CMVMI, STARTING, ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-optimization.html
Note If the innodb_read_only system variable is enabled, ANALYZE TABLE may fail because it cannot update statistics tables in the data dictionary, which use InnoDB. To write queries for these tables most efficiently, use the following general ...To ...
https://dev.mysql.com/doc/refman/8.0/en/insert-optimization.html
Ideally, you make a single connection, send the data for many new rows at once, and delay all index updates and consistency checking until the very end. If you are adding data to a nonempty table, you can tune the bulk_insert_buffer_size variable to ...The size of the table slows down the insertion of indexes by log N, assuming B-tree ...
https://dev.mysql.com/doc/refman/8.0/en/windows-server-first-start.html
If you omit the --console option, the server writes diagnostic output to the error log in the data directory (C:\Program Files\MySQL\MySQL Server 8.0\data by default). Note The database must be initialized before MySQL can be started. The error log ...The examples in these sections assume that MySQL is installed under the default location of C:\Program Files\MySQL\MySQL Server ...
https://dev.mysql.com/doc/refman/8.0/en/information-functions.html
Although the expression can be a subquery, it must return a single column and at most a single row. The two have very different execution profiles and you should not expect them to take the same amount of time. Beginning with MySQL 8.0.34, this ...