PDF (US Ltr)
- 43.3Mb
PDF (A4)
- 43.4Mb
Man Pages (TGZ)
- 297.2Kb
Man Pages (Zip)
- 402.4Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-group-configuration-version-table.html
This table displays the version of the member actions configuration for replication group members. The replication_group_configuration_version table has these columns: NAME The name of the configuration. Whenever a member action is enabled or ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-group-member-actions-table.html
This table lists the member actions that are included in the member actions configuration for replication group members. The replication_group_member_actions table has these columns: NAME The name of the member action. You can reset the member ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-rwlock-instances-table.html
The rwlock_instances table lists all the rwlock (read write lock) instances seen by the Performance Schema while the server executes. The rwlock_instances table has these columns: NAME The instrument name associated with the lock. The ...An rwlock ...
https://dev.mysql.com/doc/refman/8.0/en/getting-information.html
What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-best-practices.html
Specify a primary key for every table using the most frequently queried column or columns, or an auto-increment value if there is no obvious primary key. Use joins wherever data is pulled from multiple tables based on identical ID values from those ...Adding foreign keys ensures that referenced columns are indexed, which can improve ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-storage-layout.html
Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the OPTIMIZE TABLE statement to reorganize the table and compact any wasted space. The reorganized tables require less disk ...This is a straightforward technique that can improve performance when other techniques such as improving index usage or tuning application code are not ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlbinlog.html
Note that from MySQL 8.0.14, mysqlbinlog returns a suitable error if you attempt to read an encrypted binary log file directly, but older versions of mysqlbinlog do not recognise the file as a binary log file at all. The other option values are ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-reference.html
Audit Log Tables MySQL Enterprise Audit uses tables in the mysql system database for persistent storage of filter and user account data. The tables can be accessed only by users who have privileges for that database. If these tables are missing, the ...Unless those objects are installed, the audit_log plugin operates in legacy mode (deprecated in MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/bnl-bka-optimization.html
In MySQL, a Batched Key Access (BKA) Join algorithm is available that uses both index access to the joined table and a join buffer. Benefits of BKA include improved join performance due to more efficient table scanning. Moreover, a join buffer can ...The BKA algorithm supports inner join, outer join, and semijoin operations, including nested outer ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-monitoring.html
You can monitor the status and progress of a cloning operation on the recipient MySQL server instance using the clone_status and clone_progress Performance Schema tables. Note The clone_status and clone_progress Performance Schema tables can be used ...To monitor a cloning operation on the donor MySQL server instance, use the clone stage events, as described in Monitoring Cloning Operations Using Performance Schema Stage ...