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https://dev.mysql.com/doc/refman/8.0/en/identifier-mapping.html
Any character is legal in database or table identifiers except ASCII NUL (X'00'). MySQL encodes any characters that are problematic in the corresponding file system objects when it creates database directories or table files: Basic Latin letters ...
https://dev.mysql.com/doc/refman/8.0/en/regexp.html
This section discusses the functions and operators available for regular expression matching and illustrates, with examples, some of the special characters and constructs that can be used for regular expression operations. MySQL implements regular ...(Prior to MySQL 8.0.4, MySQL used Henry Spencer's implementation of regular expressions, which operates in byte-wise fashion and is not multibyte ...
https://dev.mysql.com/doc/refman/8.0/en/charset-table.html
Every table has a table character set and a table collation. The CREATE TABLE and ALTER TABLE statements have optional clauses for specifying the table character set and collation: CREATE TABLE tbl_name (column_list) [[DEFAULT] CHARACTER SET ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf8mb3.html
The utf8mb3 character set has these characteristics: Supports BMP characters only (no support for supplementary characters) Requires a maximum of three bytes per multibyte character. Applications that use UTF-8 data but require supplementary ...
https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html
(Exception: Element 1 cannot be empty or missing.) In all cases, an element may be surrounded by whitespace characters and the entire list is enclosed in single quotes. For more information about SSL file autogeneration, including file names and ...
https://dev.mysql.com/doc/refman/8.0/en/adding-collation.html
A collation is a set of rules that defines how to compare and sort character strings. Every character set has at least one collation, and most have two or more collations. Characters with equal weights compare as equal, and characters with unequal ... Warning User-defined collations are deprecated; you should expect support for them to be removed in a future version of ...
https://dev.mysql.com/doc/refman/8.0/en/charset-errors.html
This section describes how the MySQL server uses character sets for constructing error messages. For information about the language of error messages (rather than the character set), see Section 12.12, “Setting the Error Message Language”. For ...
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-set.html
The binary character set is the character set for binary strings, which are sequences of bytes. Comparison and sorting are based on numeric byte values, rather than on numeric character code values (which for multibyte characters differ from ...For ...
https://dev.mysql.com/doc/refman/8.0/en/charset.html
MySQL includes character set support that enables you to store data using a variety of character sets and perform comparisons according to a variety of collations. The default MySQL server character set and collation are utf8mb4 and ...Note UTF8 is ...
https://dev.mysql.com/doc/refman/8.0/en/charset-examples.html
The following examples show how MySQL determines default character set and collation values. Example 1: Table and Column Definition CREATE TABLE t1 ( c1 CHAR(10) CHARACTER SET latin1 COLLATE latin1_german1_ci ) DEFAULT CHARACTER SET latin2 COLLATE ...Notice that there is no problem with storing a latin1 column in a latin2 ...