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https://dev.mysql.com/doc/refman/8.0/en/error-log-rule-based-filtering.html
The log_filter_dragnet log filter component enables log filtering based on user-defined rules. To enable the log_filter_dragnet filter, first load the filter component, then modify the log_error_services value. The following example enables ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-syslog.html
It is possible to have mysqld write the error log to the system log (the Event Log on Windows, and syslog on Unix and Unix-like systems). This section describes how to configure error logging using the built-in filter, log_filter_internal, and the ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-general.html
Why did MySQL version numbering skip versions 6 and 7 and go straight to 8.0? A.1.3. Does MySQL have a NOW() function with fractions of seconds? A.1.7. Which version of MySQL is production-ready (GA)? MySQL 9.5, 8.4, and 8.0 are actively supported ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-triggers.html
Where can I find the documentation for MySQL 8.0 triggers? A.5.2. Is there a way to view all triggers in a given database? A.5.7. Can a table have multiple triggers with the same trigger event and action time? A.5.11. Is it possible for a trigger to ...
https://dev.mysql.com/doc/refman/8.0/en/federated-usagenotes.html
The following items indicate features that the FEDERATED storage engine does and does not support: The remote server must be a MySQL server. The remote table that a FEDERATED table points to must exist before you try to access the table through the ...
https://dev.mysql.com/doc/refman/8.0/en/floating-point-types.html
The FLOAT and DOUBLE types represent approximate numeric data values. MySQL uses four bytes for single-precision values and eight bytes for double-precision values. For FLOAT, the SQL standard permits an optional specification of the precision (but ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-configuring-online-group.html
You can configure an online group while Group Replication is running by using a set of functions, which rely on a group action coordinator. These functions are installed by the Group Replication plugin in version 8.0.13 and higher. This section ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-frequently-asked-questions.html
What is the maximum number of MySQL servers in a group? A group can consist of maximum 9 servers. Attempting to add another server to a group with 9 members causes the request to join to be refused. This limit has been identified from testing and ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-limitations.html
Limit on Group Size Limits on Transaction Size The following known limitations exist for Group Replication. Note that the limitations and issues described for multi-primary mode groups can also apply in single-primary mode clusters during a ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-multi-primary-mode.html
In multi-primary mode (group_replication_single_primary_mode=OFF) no member has a special role. Any member that is compatible with the other group members is set to read/write mode when joining the group, and can process write transactions, even if ...