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https://dev.mysql.com/doc/refman/8.0/en/help.html
Its proper operation requires that the help tables in the mysql database be initialized with help topic information (see Section 7.1.17, “Server-Side Help Support”). The HELP statement searches the help tables for the given search string and ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-midpoint_insertion.html
The goal is to make sure that frequently accessed (“hot”) pages remain in the buffer pool, even as read-ahead and full table scans bring in new blocks that might or might not be accessed afterward. You can control the insertion point in the LRU ... Rather than using a strict LRU algorithm, InnoDB uses a technique to minimize the amount of data that is brought into the buffer pool and never accessed ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-troubleshooting.html
If the problem is with table creation, tablespaces, or data dictionary operations, refer to the InnoDB Information Schema system tables to examine contents of the InnoDB internal data dictionary. The following general guidelines apply to ...
https://dev.mysql.com/doc/refman/8.0/en/install-component.html
INSTALL COMPONENT requires the INSERT privilege for the mysql.component system table because it adds a row to that table to register the component. Specifically, you can also set component variables with these alternatives: At server startup using ...[SET variable = expr [, variable = expr] ...] variable: { {GLOBAL | @@GLOBAL.} [component_prefix.]system_var_name | {PERSIST | @@PERSIST.} [component_prefix.]system_var_name } This statement installs one or more components, which become active ...
https://dev.mysql.com/doc/refman/8.0/en/json-validation-functions.html
As before, you can see this by attempting to insert the value into the geo table, then issuing SHOW WARNINGS afterwards: mysql> INSERT INTO geo VALUES(@point3); ERROR 3819 (HY000): Check constraint 'geo_chk_1' is violated. Beginning with MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/key-space.html
This is for the worst case when all keys are inserted in sorted order and the table doesn't have any compressed keys. In MyISAM tables, you can also prefix compress numbers by specifying the PACK_KEYS=1 table option when you create the table. You ...
https://dev.mysql.com/doc/refman/8.0/en/keyring.html
Key metadata access: The Performance Schema keyring_keys table exposes metadata for keys in the keyring. The keyring_keys table does not expose any sensitive keyring data such as key contents. The Performance Schema keyring_component_status table ...
https://dev.mysql.com/doc/refman/8.0/en/ldml-rules.html
Orderings are given as a set of rules that begin with a reset rule that establishes an anchor point, followed by shift rules that indicate how characters sort relative to the anchor point. The following table shows the correspondence between ...This ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-resolved.html
These are described briefly in the following list: Database and table names. In NDB 7.6 and earlier, when using the NDB storage engine, the maximum allowed length both for database names and for table names was 63 bytes, and a statement using a ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-mysqld.html
(We often refer to a mysqld process running in this manner as an SQL node.) It is fully aware of all cluster data nodes as well as their status, and establishes connections to all data nodes. If mysqld is started with only the --ndbcluster option, ...To be used with NDB Cluster, mysqld needs to be built with support for the NDB storage engine, as it is in the precompiled binaries available from ...