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https://dev.mysql.com/doc/refman/8.0/en/installing.html
If you plan to upgrade an existing version of MySQL to a newer version rather than install MySQL for the first time, see Chapter 3, Upgrading MySQL, for information about upgrade procedures and about issues that you should consider before upgrading.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-log-statistics.html
Counters providing information about the state of the cluster are updated at 5-second reporting intervals by the transaction coordinator (TC) and the local query handler (LQH), and written to the cluster log. This includes all inserts, updates, ...
https://dev.mysql.com/doc/refman/8.0/en/replication-mode-change-online-concepts.html
Before setting the replication mode of an online server, it is important to understand some key concepts of replication. This section explains these concepts and is essential reading before attempting to modify the replication mode of an online ...
https://dev.mysql.com/doc/refman/8.0/en/reusing-ssl-sessions.html
Server-Side Runtime Configuration and Monitoring for SSL Session Reuse Client-Side Configuration for SSL Session Reuse Each full TLS exchange can be costly both in terms of computation and network overhead, less costly if TLSv1.3 is used. As of ...
https://dev.mysql.com/doc/refman/8.0/en/starting-server-troubleshooting.html
Log files are located in the data directory (typically C:\Program Files\MySQL\MySQL Server 8.0\data on Windows, /usr/local/mysql/data for a Unix/Linux binary distribution, and /usr/local/var for a Unix/Linux source distribution). Look in the data ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure.html
When a suspicion times out, the suspected member is assumed to have failed, and is expelled from the group. From MySQL 8.0.21, a waiting period of 5 seconds is added before the suspicion times out and the suspected member is liable for expulsion. If ... Group Replication's failure detection mechanism is designed to identify group members that are no longer communicating with the group, and expel them as and when it seems likely that they have ...
https://dev.mysql.com/doc/refman/8.0/en/group-by-handling.html
SQL-92 and earlier does not permit queries for which the select list, HAVING condition, or ORDER BY list refer to nonaggregated columns that are not named in the GROUP BY clause. SQL:1999 and later permits such nonaggregates per optional feature ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-ip-address-permissions.html
When and only when the XCom communication stack is used for establishing group communications (group_replication_communication_stack=XCOM), the Group Replication plugin lets you specify an allowlist of hosts from which an incoming Group ...If you ...
https://dev.mysql.com/doc/refman/8.0/en/hash-joins.html
By default, MySQL (8.0.18 and later) employs hash joins whenever possible. It is possible to control whether hash joins are employed using one of the BNL and NO_BNL optimizer hints, or by setting block_nested_loop=on or block_nested_loop=off as ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-table-select.html
You can use the select() method to query for and return records from a table in a database. The X DevAPI provides additional methods to use with the select() method to filter and sort the returned records. MySQL provides the following operators to ...Select All Records To issue a query that returns all records from an existing table, use the select() method without specifying search ...