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https://dev.mysql.com/doc/refman/8.0/en/key-space.html
You can roughly calculate the size for the index file as (key_length+4)/0.67, summed over all keys. Space compression makes the index file smaller than the worst-case figure if a string column has a lot of trailing space or is a VARCHAR column that ...This is for the worst case when all keys are inserted in sorted order and the table doesn't have any compressed ...
https://dev.mysql.com/doc/refman/8.0/en/loadable-function-reference.html
The following table lists each function that is loadable at runtime and provides a short description of each one. For a table listing built-in functions and operators, see Section 14.1, “Built-In Function and Operator Reference” For general ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-gr-memory-monitoring-ps-instruments-enable.html
For more information, see Section 29.3, “Performance Schema Startup Configuration” and Section 29.4, “Performance Schema Runtime Configuration”.
https://dev.mysql.com/doc/refman/8.0/en/mysql-oci-marketplace-maintenance.html
Upgrading MySQL The existing installation is RPM-based, to upgrade the MySQL server, see Section 3.7, “Upgrading MySQL Binary or Package-based Installations on Unix/Linux”. You can use scp to copy the required RPM to the OCI Compute Instance, or ... This product is user-managed, meaning you are responsible for upgrades and ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlbinlog-hexdump.html
Master Pos: The position of the next event in the original source log file. For more information about binary log format, see MySQL Internals: The Binary Log. In the example shown, '9d fc 5c 43' is the representation of '051024 17:24:13' in ...
https://dev.mysql.com/doc/refman/8.0/en/obtaining-component-information.html
For example: mysql> SELECT * FROM mysql.component; +--------------+--------------------+------------------------------------+ | component_id | component_group_id | component_urn | ... The mysql.component system table contains information about ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-stages-current-table.html
SOURCE The name of the source file containing the instrumented code that produced the event and the line number in the file at which the instrumentation occurs. The table stores one row per thread showing the current status of the thread's most ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-transactions-current-table.html
SOURCE The name of the source file containing the instrumented code that produced the event and the line number in the file at which the instrumentation occurs. The table stores one row per thread showing the current status of the thread's most ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-filtering.html
Events are processed in a producer/consumer fashion: Instrumented code is the source for events and produces events to be collected. The setup_instruments table lists the instruments for which events can be collected, whether they are enabled, and ...| wait/synch/mutex/sql/LOCK_global_read_lock | YES | YES | | wait/synch/mutex/sql/LOCK_global_system_variables | YES | YES | | wait/synch/mutex/sql/LOCK_lock_db | YES | YES | | wait/synch/mutex/sql/LOCK_manager | YES | YES | ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instance-tables.html
They provide event names and explanatory notes or status information: cond_instances: Condition synchronization object instances file_instances: File instances mutex_instances: Mutex synchronization object instances rwlock_instances: Lock ...There ...Instrument names may have multiple parts and form a hierarchy, as discussed in Section 29.6, “Performance Schema Instrument Naming ...