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https://dev.mysql.com/doc/refman/8.4/en/error-log-filtering.html
Error log configuration normally includes one log filter component and one or more log sink components. For error log filtering, MySQL offers a choice of components: log_filter_internal: This filter component provides error log filtering based on ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/error-lost-connection.html
Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs frequently. If the error message includes “during query,” this is probably the case you are experiencing. Sometimes the ...
https://dev.mysql.com/doc/refman/8.4/en/error-message-language.html
By default, mysqld produces error messages in English, but they can be displayed instead in any of several other languages: Czech, Danish, Dutch, Estonian, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Norwegian-ny, ...
https://dev.mysql.com/doc/refman/8.4/en/event-scheduler.html
The MySQL Event Scheduler manages the scheduling and execution of events, that is, tasks that run according to a schedule. The following discussion covers the Event Scheduler and is divided into the following sections: Section 27.4.1, “Event ...
https://dev.mysql.com/doc/refman/8.4/en/example-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column ...
https://dev.mysql.com/doc/refman/8.4/en/example-user-variables.html
You can employ MySQL user variables to remember results without having to store them in temporary variables in the client.
https://dev.mysql.com/doc/refman/8.4/en/faqs-c-api.html
What is “MySQL Native C API”? What are typical benefits and use cases? A.13.2. What if I want to use the “NoSQL” X DevAPI? A.13.4. What is “MySQL Native C API”? What are typical benefits and use cases? libmysql is a C-based API that you ...
https://dev.mysql.com/doc/refman/8.4/en/faqs-information-schema.html
Where can I find documentation for the MySQL INFORMATION_SCHEMA database? A.7.2. Where can I find the ANSI SQL 2003 specification for INFORMATION_SCHEMA? A.7.4. What is the difference between the Oracle Data Dictionary and MySQL INFORMATION_SCHEMA? ...
https://dev.mysql.com/doc/refman/8.4/en/faqs-innodb-change-buffer.html
What types of operations modify secondary indexes and result in change buffering? A.16.2. How much space does InnoDB use for the change buffer? A.16.5. How do I determine the current size of the change buffer? A.16.6. Where can I find additional ...