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https://dev.mysql.com/doc/refman/8.0/en/problems-with-null.html
When using DISTINCT, GROUP BY, or ORDER BY, all NULL values are regarded as equal. Aggregate (group) functions such as COUNT(), MIN(), and SUM() ignore NULL values. The concept of the NULL value is a common source of confusion for newcomers to SQL, ...
https://dev.mysql.com/doc/refman/8.0/en/replication-administration.html
Tip To deploy multiple instances of MySQL, you can use InnoDB Cluster which enables you to easily administer a group of MySQL server instances in MySQL Shell. InnoDB Cluster wraps MySQL Group Replication in a programmatic environment that enables ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-timeout.html
The process of retrying transactions can cause lag on a replica or on a Group Replication group member, which can be configured as a single-threaded or multithreaded replica. The global value of the system variable replica_transaction_retries (from ...
https://dev.mysql.com/doc/refman/8.0/en/replication-gtids-lifecycle.html
For example, you might need to do this after carrying out test queries to verify a replication setup on new GTID-enabled servers, or when you want to join a new server to a replication group but it contains some unwanted local transactions that are ... The life cycle of a GTID consists of the following steps: A transaction is executed and committed on the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-howto.html
Tip To deploy multiple instances of MySQL, you can use InnoDB Cluster which enables you to easily administer a group of MySQL server instances in MySQL Shell. InnoDB Cluster wraps MySQL Group Replication in a programmatic environment that enables ...
https://dev.mysql.com/doc/refman/8.0/en/replication-privilege-checks.html
By default, MySQL replication (including Group Replication) does not carry out privilege checks when transactions that were already accepted by another server are applied on a replica or group member. MySQL then checks each transaction against the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-setup-replicas.html
Tip To deploy multiple instances of MySQL, you can use InnoDB Cluster which enables you to easily administer a group of MySQL server instances in MySQL Shell. InnoDB Cluster wraps MySQL Group Replication in a programmatic environment that enables ...
https://dev.mysql.com/doc/refman/8.0/en/replication-snapshot-method.html
Tip To deploy multiple instances of MySQL, you can use InnoDB Cluster which enables you to easily administer a group of MySQL server instances in MySQL Shell. InnoDB Cluster wraps MySQL Group Replication in a programmatic environment that enables ...
https://dev.mysql.com/doc/refman/8.0/en/source-configuration-options.html
This works for most cases but when using the Resource Group feature, mysqld is setsuid, and the loader ignores any RPATH which contains $ORIGIN. That section also includes information about specifying options otherwise specified in [mysqld_safe] ...
https://dev.mysql.com/doc/refman/8.0/en/start-replica.html
The replication channels for Group Replication (group_replication_applier and group_replication_recovery) are managed automatically by the server instance. START REPLICA cannot be used at all with the group_replication_recovery channel, and should ... START REPLICA [thread_types] [until_option] [connection_options] [channel_option] thread_types: [thread_type [, thread_type] ...