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https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-7.html
(Bug #26239946, Bug #26140577) Attempts to connect to a server started with collation utf8mb4_de_pb_0900_ai_ci resulted in null pointer exceptions. MySQL Connectors and other MySQL client tools and applications now synchronize the first digit of ...
https://dev.mysql.com/doc/refman/9.7/en/alter-table-problems.html
If you get a duplicate-key error when using ALTER TABLE to change the character set or collation of a character column, the cause is either that the new column collation maps two keys to the same value or that the table is corrupted. In the latter ...
https://dev.mysql.com/doc/refman/9.7/en/atomic-ddl.html
An atomic DDL statement combines the data dictionary updates, storage engine operations, and binary log writes associated with a DDL operation into a single, atomic operation. The operation is either committed, with applicable changes persisted to ...
https://dev.mysql.com/doc/refman/9.7/en/audit-log-component-installation.html
Note The Audit Log component is intended to replace the Audit Log plugin, which is now deprecated. This section describes how to install or uninstall MySQL Enterprise Audit, which is implemented using the audit log component and related elements ...
https://dev.mysql.com/doc/refman/9.7/en/audit-log-installation.html
Important The audit_log plugin is deprecated, and is being replaced by the audit_log component. Deprecation of the plugin means that you should expect the plugin to be removed in a future version of MySQL. For more information about the audit log ...
https://dev.mysql.com/doc/refman/9.7/en/charset-baltic-sets.html
cp1257 (Windows Baltic) collations: cp1257_bin cp1257_general_ci (default) cp1257_lithuanian_ci latin7 (ISO 8859-13 Baltic) collations: latin7_bin latin7_estonian_cs latin7_general_ci (default) latin7_general_cs . The Baltic character sets cover ...
https://dev.mysql.com/doc/refman/9.7/en/charset-unicode-utf8mb4.html
The utf8mb4 character set has these characteristics: Supports BMP and supplementary characters. utf8mb4 contrasts with the utf8mb3 character set, which supports only BMP characters and uses a maximum of three bytes per character: For a BMP ...
https://dev.mysql.com/doc/refman/9.7/en/clone-plugin-remote.html
The donor and recipient must have the same MySQL server character set and collation. For information about MySQL server character set and collation configuration, see Section 12.15, “Character Set Configuration”. The clone plugin supports the ...
https://dev.mysql.com/doc/refman/9.7/en/create-table-ndb-comment-options.html
It does not indicate the number of characters, which varies according to the character set and collation used by the column. NDB_COLUMN Options NDB_TABLE Options It is possible to set a number of options specific to NDB Cluster in the table comment ...
https://dev.mysql.com/doc/refman/9.7/en/data-dictionary-object-cache.html
collation definition cache partition: Stores collation definition objects and has a hardcoded object limit of 256. The dictionary object cache is a shared global cache that stores previously accessed data dictionary objects in memory to enable ...