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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-options.html
Consumer names in the setup_consumers table use underscores, but for consumers set at startup, dashes and underscores within the name are equivalent. Performance Schema parameters can be specified at server startup on the command line or in option ...
https://dev.mysql.com/doc/refman/8.0/en/pluggable-storage-common-layer.html
Physical Storage: This involves everything from the overall page size for tables and indexes as well as the format used for storing data to physical disk. A MySQL pluggable storage engine is the component in the MySQL database server that is ...
https://dev.mysql.com/doc/refman/8.0/en/precision-math-decimal-characteristics.html
The storage required for remaining digits is given by the following table. This section discusses the characteristics of the DECIMAL data type (and its synonyms), with particular regard to the following topics: Maximum number of digits Storage ...
https://dev.mysql.com/doc/refman/8.0/en/precision-math-rounding.html
This section discusses precision math rounding for the ROUND() function and for inserts into columns with exact-value types (DECIMAL and integer). The ROUND() function rounds differently depending on whether its argument is exact or approximate: ...
https://dev.mysql.com/doc/refman/8.0/en/problems-with-null.html
For example, the following statements are completely different: mysql> INSERT INTO my_table (phone) VALUES (NULL); mysql> INSERT INTO my_table (phone) VALUES (''); Both statements insert a value into the phone column, but the first inserts a NULL ...
https://dev.mysql.com/doc/refman/8.0/en/replication-asynchronous-connection-failover-replica.html
All group members receive the current source list as recorded in the mysql.replication_asynchronous_connection_failover and mysql.replication_asynchronous_connection_failover_managed tables. Because the sources do not have to be in a managed group, ... In MySQL 8.0.27 and later, asynchronous connection failover for replicas is activated automatically for a replication channel on a Group Replication primary when you set SOURCE_CONNECTION_AUTO_FAILOVER=1 in the CHANGE REPLICATION SOURCE TO statement for the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-asynchronous-connection-failover.html
Beginning with MySQL 8.0.22, you can use the asynchronous connection failover mechanism to automatically establish an asynchronous (source to replica) replication connection to a new source after the existing connection from a replica to its source ...The asynchronous connection failover mechanism can be used to keep a replica synchronized with multiple MySQL servers or groups of servers that share ...
https://dev.mysql.com/doc/refman/8.0/en/replication-bugs.html
When you have determined that there is no user error involved, and replication still either does not work at all or is unstable, it is time to send us a bug report. If you have a repeatable test case that demonstrates the bug, please enter it into ...We need to obtain as much information as possible from you to be able to track down the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-channels.html
Channel specific replication filters can be used when the same database or table is present on multiple sources, and you only need the replica to replicate it from one source. In MySQL multi-source replication, a replica opens multiple replication ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-mysqldb.html
Data modification statements made to tables in the mysql schema are replicated according to the value of binlog_format; if this value is MIXED, these statements are replicated using row-based format. However, statements that would normally update ...