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https://dev.mysql.com/doc/refman/8.4/en/charset-national.html
Thus, using NATIONAL CHARACTER or one of its synonyms to define the character set for a database, table, or column raises a warning similar to this one: NATIONAL/NCHAR/NVARCHAR implies the character set UTF8MB3, which will be replaced by UTF8MB4 in ... Standard SQL defines NCHAR or NATIONAL CHAR as a way to indicate that a CHAR column should use some predefined character ...
https://dev.mysql.com/doc/refman/8.4/en/charset-restrictions.html
Identifiers are stored in mysql database tables (user, db, and so forth) using utf8mb3, but identifiers can contain only characters in the Basic Multilingual Plane (BMP). The ucs2, utf16, utf16le, and utf32 character sets have the following ...
https://dev.mysql.com/doc/refman/8.4/en/charset-syntax.html
There are default settings for character sets and collations at four levels: server, database, table, and column. The description in the following sections may appear complex, but it has been found in practice that multiple-level defaulting leads ...
https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-utf32.html
utf32 takes twice as much space as ucs2 and more space than utf16, but utf32 has the same advantage as ucs2 that it is predictable for storage: The required number of bytes for utf32 equals the number of characters times 4. The utf32 character set ...
https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-utf8.html
utf8 has been used by MySQL in the past as an alias for the utf8mb3 character set, but this usage is now deprecated; in MySQL 8.4, SHOW statements and columns of INFORMATION_SCHEMA tables display utf8mb3 instead. For more information, see Section ...
https://dev.mysql.com/doc/refman/8.4/en/charset.html
The default MySQL server character set and collation are utf8mb4 and utf8mb4_0900_ai_ci, but you can specify character sets at the server, database, table, column, and string literal levels. MySQL includes character set support that enables you to ...
https://dev.mysql.com/doc/refman/8.4/en/clone-plugin-options-variables.html
The requested data transfer rate specified by clone_max_data_bandwidth may differ from the actual data transfer rate reported by the DATA_SPEED column in the performance_schema.clone_progress table. This section describes the system variables that ...
https://dev.mysql.com/doc/refman/8.4/en/command-line-options.html
Program options specified on the command line follow these rules: Options are given after the command name. An option argument begins with one dash or two dashes, depending on whether it is a short form or long form of the option name. For example, ...
https://dev.mysql.com/doc/refman/8.4/en/comments.html
For example, MySQL Server recognizes the STRAIGHT_JOIN keyword in the following statement, but other servers should not: SELECT /*! STRAIGHT_JOIN */ col1 FROM table1,table2 WHERE ... MySQL Server supports three comment styles: From a # character to ...
https://dev.mysql.com/doc/refman/8.4/en/connecting-using-uri-or-key-value-pairs.html
This section describes use of URI-like connection strings or key-value pairs to specify how to establish connections to the MySQL server, for clients such as MySQL Shell. For information on establishing connections using command-line options, for ...For additional information if you are unable to connect, see Section 8.2.22, “Troubleshooting Problems Connecting to ...