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https://dev.mysql.com/doc/refman/8.0/en/ldml-rules.html
MySQL recognizes a large enough subset of the syntax that, in many cases, it is possible to download a collation definition from the Unicode Common Locale Data Repository and paste the relevant part (that is, the part between the <rules> and ...The ...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 ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-locks-per-fragment.html
The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests on a per-fragment basis, serving as a companion table to operations_per_fragment and memory_per_fragment. This table also ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-params-mgmd.html
The listing in this section provides information about parameters used in the [ndb_mgmd] or [mgm] section of a config.ini file for configuring NDB Cluster management nodes. For detailed descriptions and other additional information about each of ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-metadata-locks-table.html
Metadata locking applies not just to tables, but also to schemas, stored programs (procedures, functions, triggers, scheduled events), tablespaces, user locks acquired with the GET_LOCK() function (see Section 14.14, “Locking Functions”), and ...
https://dev.mysql.com/doc/refman/8.0/en/show-plugins.html
This is the name used to refer to the plugin file in statements such as INSTALL PLUGIN and UNINSTALL PLUGIN. This file is located in the directory named by the plugin_dir system variable. For information about plugin data structures that form the ...
https://dev.mysql.com/doc/refman/8.0/en/gis-polygon-property-functions.html
If any geometry argument is not a syntactically well-formed geometry, an ER_GIS_INVALID_DATA error occurs. For functions that take multiple geometry arguments, if those arguments are not in the same SRS, an ER_GIS_DIFFERENT_SRIDS error occurs. As of ...Unless otherwise specified, functions in this section handle their geometry arguments as follows: If any argument is NULL or any geometry argument is an empty geometry, the return value is ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-applier-status-by-coordinator-table.html
LAST_ERROR_NUMBER, LAST_ERROR_MESSAGE The error number and error message of the most recent error that caused the SQL/coordinator thread to stop. If the LAST_ERROR_MESSAGE value is not empty, the error values also appear in the replica's error log.
https://dev.mysql.com/doc/refman/8.0/en/version-tokens-reference.html
(It is not an error to delete nonexisting tokens.) To clear the token list entirely without knowing which tokens are in the list, pass NULL or a string containing no tokens to version_tokens_set(): mysql> SELECT version_tokens_set(NULL); ... The ...
https://dev.mysql.com/doc/refman/8.0/en/stored-program-restrictions.html
This is because stored routine and trigger definitions are stored in tables in the mysql system database using InnoDB tables, which are not copied between Cluster nodes. If you refer to a temporary table multiple times in a stored function under ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-concurrent-ddl.html
If a backup lock is not obtained with the specified time limit, the cloning operation fails with an error. DDL operations that are not permitted during a cloning operation regardless of the clone_block_ddl setting include: ALTER TABLE tbl_name ...