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https://dev.mysql.com/doc/refman/5.7/en/channels-naming-conventions.html
Because channel names are used in replication metadata repositories, the character set used for these is always UTF-8. Although you are generally free to use any name for channels, the following names are reserved: group_replication_applier ... This ...
https://dev.mysql.com/doc/refman/5.7/en/event-scheduler-thread-states.html
Waiting for scheduler to stop The thread issued SET GLOBAL event_scheduler=OFF and is waiting for the scheduler to stop. These states occur for the Event Scheduler thread, threads that are created to execute scheduled events, or threads that ...
https://dev.mysql.com/doc/refman/5.7/en/fetch.html
To detect this condition, you can set up a handler for it (or for a NOT FOUND condition). This statement fetches the next row for the SELECT statement associated with the specified cursor (which must be open), and advances the cursor pointer. If a ...
https://dev.mysql.com/doc/refman/5.7/en/mysqlbinlog-server-id.html
You can use mysqlbinlog to request log files from a server in several ways: Specify an explicitly named set of files: For each file, mysqlbinlog connects and issues a Binlog dump command. Specify the beginning file and --to-last-log: mysqlbinlog ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-applier-status-table.html
The maximum number of retries for a given transaction is set by the slave_transaction_retries system variable. The table provides information about general aspects of transaction applier status that are not specific to any thread involved. This ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-key-column-usage-table.html
CONSTRAINT_SCHEMA The name of the schema (database) to which the constraint belongs. TABLE_SCHEMA The name of the schema (database) to which the table belongs. If the constraint is a foreign key, then this is the column of the foreign key, not the ...The KEY_COLUMN_USAGE table has these columns: CONSTRAINT_CATALOG The name of the catalog to which the constraint ...
https://dev.mysql.com/doc/refman/5.7/en/myisam-crash-recovery.html
This section describes how to check for and deal with data corruption in MySQL databases. When performing crash recovery, it is important to understand that each MyISAM table tbl_name in a database corresponds to the three files in the database ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-backups.html
There are therefore two choices: If you are using replication as a solution to enable you to back up the data on the source, and the size of your database is not too large, the mysqldump tool may be suitable. For larger databases, where mysqldump ...
https://dev.mysql.com/doc/refman/5.7/en/gis-class-geometry.html
For example, in different coordinate systems, the distance between two objects may differ even when objects have the same coordinates, because the distance on the planar coordinate system and the distance on the geodetic system (coordinates on the ...It is a noninstantiable class but has a number of properties, described in the following list, that are common to all geometry values created from any of the Geometry ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-buffer-page-table.html
The INNODB_BUFFER_PAGE table provides information about each page in the InnoDB buffer pool. For related usage information and examples, see Section 14.16.5, “InnoDB INFORMATION_SCHEMA Buffer Pool Tables”. Do not query this table on a ...The ...