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https://dev.mysql.com/doc/refman/8.0/en/gis-property-functions.html
Each function that belongs to this group takes a geometry value as its argument and returns some quantitative or qualitative property of the geometry. Such functions return NULL if the argument is of an incorrect geometry type. For example, the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-adding-instances.html
At this point, the group has one member in it, server s1, which has some data in it. It is now time to expand the group by adding the other two servers configured previously. 20.2.1.6.1 Adding a Second Instance In order to add a second instance, ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-bootstrap.html
The process of starting a group for the first time is called bootstrapping. The bootstrap should only be done by a single server, the one that starts the group and only once. This is why the value of the group_replication_bootstrap_group option was ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-system-variables.html
This section lists the system variables that are specific to the Group Replication plugin. The name of each Group Replication system variable is prefixed with group_replication_. Note InnoDB Cluster uses Group Replication, but the default values of ...
https://dev.mysql.com/doc/refman/8.0/en/host-cache.html
The MySQL server maintains an in-memory host cache that contains information about clients: IP address, host name, and error information. The Performance Schema host_cache table exposes the contents of the host cache so that it can be examined ...
https://dev.mysql.com/doc/refman/8.0/en/index-hints.html
Index hints give the optimizer information about how to choose indexes during query processing. Index hints, described here, differ from optimizer hints, described in Section 10.9.3, “Optimizer Hints”. They also work with multi-table DELETE ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-buffer-page-lru-table.html
The INNODB_BUFFER_PAGE_LRU table provides information about the pages in the InnoDB buffer pool; in particular, how they are ordered in the LRU list that determines which pages to evict from the buffer pool when it becomes full. The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-table.html
For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_FOREIGN table has these columns: ID The name (not a numeric value) of the foreign key index, preceded by the schema ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-tablestats-table.html
The INNODB_TABLESTATS table provides a view of low-level status information about InnoDB tables. This data is used by the MySQL optimizer to calculate which index to use when querying an InnoDB table. This information is derived from in-memory data ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-processlist-table.html
Important INFORMATION_SCHEMA.PROCESSLIST is deprecated and subject to removal in a future MySQL release. As such, the implementation of SHOW PROCESSLIST which uses this table is also deprecated. It is recommended to use the Performance Schema ...