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https://dev.mysql.com/doc/refman/8.4/en/charset-configuration.html
The MySQL server has a compiled-in default character set and collation. To change these defaults, use the --character-set-server and --collation-server options when you start the server. The collation must be a legal collation for the default ...
https://dev.mysql.com/doc/refman/8.4/en/charset-repertoire.html
The repertoire of a character set is the collection of characters in the set. String expressions have a repertoire attribute, which can have two values: ASCII: The expression can contain only ASCII characters; that is, characters in the Unicode ...
https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-utf32.html
The utf32 character set is fixed length (like ucs2 and unlike utf16). utf32 uses 32 bits for every character, unlike ucs2 (which uses 16 bits for every character), and unlike utf16 (which uses 16 bits for some characters and 32 bits for others).
https://dev.mysql.com/doc/refman/8.4/en/checking-gpg-signature.html
Another method of verifying the integrity and authenticity of a package is to use cryptographic signatures. This is more reliable than using MD5 checksums, but requires more work. GnuPG is an Open Source alternative to the well-known Pretty Good ...
https://dev.mysql.com/doc/refman/8.4/en/component-loading.html
Components must be loaded into the server before they can be used. MySQL supports manual component loading at runtime and automatic loading during server startup. While a component is loaded, information about it is available as described in ...
https://dev.mysql.com/doc/refman/8.4/en/connection-access.html
When you attempt to connect to a MySQL server, the server accepts or rejects the connection based on these conditions: Your identity and whether you can verify it by supplying the proper credentials. A failure at either step causes the server to ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-generated-columns.html
Values of a generated column are computed from an expression included in the column definition. Generated column definitions have this syntax: col_name data_type [GENERATED ALWAYS] AS (expr) [VIRTUAL | STORED] [NOT NULL | NULL] [UNIQUE [KEY]] ...
https://dev.mysql.com/doc/refman/8.4/en/derived-table-optimization.html
The optimizer handles derived tables, view references, and common table expressions the same way: It avoids unnecessary materialization whenever possible, which enables pushing down conditions from the outer query to derived tables and produces more ...
https://dev.mysql.com/doc/refman/8.4/en/dynamic-format.html
Dynamic storage format is used if a MyISAM table contains any variable-length columns (VARCHAR, VARBINARY, BLOB, or TEXT), or if the table was created with the ROW_FORMAT=DYNAMIC table option. Dynamic format is a little more complex than static ...