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https://dev.mysql.com/doc/refman/8.4/en/faqs-tablespace-encryption.html
Is data decrypted for users who are authorized to see it? A.17.2. What are the encryption algorithms used with InnoDB data-at-rest encryption? A.17.4. Is it possible to use 3rd party encryption algorithms in place of the one provided by the InnoDB ...
https://dev.mysql.com/doc/refman/8.4/en/federated-usagenotes.html
The following items indicate features that the FEDERATED storage engine does and does not support: The remote server must be a MySQL server. The remote table that a FEDERATED table points to must exist before you try to access the table through the ...
https://dev.mysql.com/doc/refman/8.4/en/fetch.html
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 row exists, the fetched columns are stored in the named variables. The number of columns ...
https://dev.mysql.com/doc/refman/8.4/en/firewall-elements.html
MySQL Enterprise Firewall is based on a plugin library that includes these elements: A server-side plugin named MYSQL_FIREWALL examines SQL statements before they execute and, based on the registered firewall profiles, renders a decision whether to ...
https://dev.mysql.com/doc/refman/8.4/en/firewall-information-schema-tables.html
The following sections describe the INFORMATION_SCHEMA tables associated with MySQL Enterprise Firewall (see Section 8.4.7, “MySQL Enterprise Firewall”). These tables are available only if the appropriate firewall plugins are enabled.
https://dev.mysql.com/doc/refman/8.4/en/floating-point-types.html
The FLOAT and DOUBLE types represent approximate numeric data values. MySQL uses four bytes for single-precision values and eight bytes for double-precision values. For FLOAT, the SQL standard permits an optional specification of the precision (but ...
https://dev.mysql.com/doc/refman/8.4/en/flow-control-functions.html
The second syntax returns the result for the first condition that is true. If no comparison or condition is true, the result after ELSE is returned, or NULL if there is no ELSE part. Note The syntax of the CASE operator described here differs ...
https://dev.mysql.com/doc/refman/8.4/en/foreign-key-optimization.html
If a table has many columns, and you query many different combinations of columns, it might be efficient to split the less-frequently used data into separate tables with a few columns each, and relate them back to the main table by duplicating the ...
https://dev.mysql.com/doc/refman/8.4/en/full-text-adding-collation.html
Warning User-defined collations are deprecated; you should expect support for them to be removed in a future version of MySQL. The server issues a warning for any use of COLLATE user_defined_collation in an SQL statement; a warning is also issued ...
https://dev.mysql.com/doc/refman/8.4/en/fulltext-restrictions.html
Full-text searches are supported for InnoDB and MyISAM tables only. The exception is that for Unicode, the utf8mb3 or utf8mb4 character set can be used, but not the ucs2 character set. Although FULLTEXT indexes on ucs2 columns cannot be used, you ...