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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-statement-digests.html
These columns store sample statement information: QUERY_SAMPLE_TEXT (the text of the statement), QUERY_SAMPLE_SEEN (when the statement was seen), and QUERY_SAMPLE_TIMER_WAIT (the statement wait or execution time). Normalization permits statements ...
https://dev.mysql.com/doc/internals/en/autotools-plugin-macros.html
If a file named configure is detected in the directory, it will be executed as part of the configure build otherwise it is assumed that there is a Makefile to be built in that directory. If the plugin has been marked as MANDATORY, it will result in ... The following macros enable plugin support in the autotools configuration ...
https://dev.mysql.com/doc/internals/en/debug-sync-activation-deactivation.html
If the option is given without a value, the timeout is set to 300 seconds. To enable it, start mysqld with the --debug-sync-timeout[=N] option, where N is a timeout value greater than 0. N becomes the default timeout for the WAIT_FOR action of ...
https://dev.mysql.com/doc/refman/8.4/en/create-event.html
The DEFINER clause specifies the MySQL account to be used when checking access privileges at event execution time. Within an event body, the CURRENT_USER function returns the account used to check privileges at event execution time, which is the ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-restore.html
--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving up. --connect-retry-delay Command-Line Format --connect-retry-delay=# Type ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-undo-tablespaces.html
Doubling of the extension size can occur multiple times to a maximum of 256MB. If the previous file extension occurred more than 0.1 seconds earlier, the extension size is reduced by half, which can also occur multiple times, to a minimum of 16MB.
https://dev.mysql.com/doc/connectors/en/connector-odbc-usagenotes-apptips-microsoft.html
If you still get the error Another user has changed your data after adding a TIMESTAMP column, the following trick may help you: Do not use a table data sheet view. Include a TIMESTAMP column in all tables that you want to be able to update. For ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-progress-report-options.html
--progress-interval=SECONDS Command-Line Format --progress-interval=SECONDS Type Numeric Default Value 2 Minimum Value 1 Maximum Value 100000 Unit second Interval between progress reports in seconds. The argument of the option controls the ... There ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-host-cache-table.html
The SUM_CONNECT_ERRORS value can exceed the max_connect_errors value because multiple connection attempts from a host can occur simultaneously while the host is not blocked. COUNT_HOST_BLOCKED_ERRORS The number of connections that were blocked ...
https://dev.mysql.com/doc/internals/en/sql-directory.html
Programs for handling SQL commands. The "core" of MySQL. These are the .c and .cc files in the sql directory: derror.cc --- read language-dependent message file des_key_file.cc --- load DES keys from plaintext file discover.cc --- Functions for ...