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https://dev.mysql.com/doc/internals/en/system-variables-controlling-trace.html
A brief overview from "mysqld --verbose --help": --optimizer-trace=name Controls tracing of the Optimizer: --optimizer-trace-features=name Enables/disables tracing of selected features of the Optimizer: ...
https://dev.mysql.com/doc/internals/en/dbug-sleep.html
In cases where the normal server code does not have a block point at the critical place, one can insert an artificial synchronization point. open_tables(...) DBUG_EXECUTE_IF("sleep_open_and_lock_after_open", { const char *old_proc_info= ...
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-error.html
This exception is the base class for all other exceptions in the errors module. It can be used to catch all errors in a single except statement. errors.Error is internally used by Connector/Python to raise MySQL client and server errors and should ...
https://dev.mysql.com/doc/connector-python/en/connector-python-api-errors-error.html
This exception is the base class for all other exceptions in the errors module. It can be used to catch all errors in a single except statement. errors.Error is internally used by Connector/Python to raise MySQL client and server errors and should ...
https://dev.mysql.com/doc/workbench/en/wb-views-overview-scripts.html
Use the SQL Scripts panel to attach SQL scripts to the model for documentation and organizational purposes, and optionally these attachments can be included in the output script when performing forward engineering or model/schema synchronization.
https://dev.mysql.com/doc/mysql-monitor/8.0/en/mem-program-reference-server-script-config.html
Note The parameters listed here, with the exception of the four repository connection parameters, correspond to those displayed on the Welcome to MySQL Enterprise Monitor page used for initial setup. Important These parameters enable you to ...
https://dev.mysql.com/doc/refman/8.4/en/group-by-optimization.html
The most general way to satisfy a GROUP BY clause is to scan the whole table and create a new temporary table where all rows from each group are consecutive, and then use this temporary table to discover groups and apply aggregate functions (if ...
https://dev.mysql.com/doc/refman/8.4/en/ldml-rules.html
This is a subset of the syntax described in the LDML specification available at http://www.unicode.org/reports/tr35/, which should be consulted for further information. MySQL recognizes a large enough subset of the syntax that, in many cases, it is ...
https://dev.mysql.com/doc/refman/8.4/en/myisamchk-other-options.html
myisamchk supports the following options for actions other than table checks and repairs: --analyze, -a Command-Line Format --analyze Analyze the distribution of key values. This improves join performance by enabling the join optimizer to better ...
https://dev.mysql.com/doc/internals/en/class-procedure-constructor.html
Prototype: n/a The class constructors prototype signature is completely up to you. The only place where objects are instantiated is your own init callback. To initialize your derived procedure object you have to pass on the select_result pointer ...