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https://dev.mysql.com/doc/refman/5.7/en/cannot-initialize-character-set.html
All standard MySQL binaries are compiled with -DWITH_EXTRA_CHARSETS=complex, which enables support for all multibyte character sets. You might see an error like this if you have character set problems: MySQL Connection Failed: Can't initialize ...
https://dev.mysql.com/doc/refman/5.7/en/channels-startup-options.html
This section describes startup options which are impacted by the addition of replication channels. The following startup settings must be configured correctly to use multi-source replication. If this variable is set to FILE, attempting to add more ...
https://dev.mysql.com/doc/refman/5.7/en/character-arrays.html
Each simple character set has a configuration file located in the sql/share/charsets directory. For a character set named MYSYS, the file is named MYSET.xml. <map> elements appear within these elements: <ctype> defines attributes for each character. <collation> elements indicate character ordering for comparison and sorting, one element per ...
https://dev.mysql.com/doc/refman/5.7/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/5.7/en/charset-gb18030.html
In MySQL, the gb18030 character set corresponds to the “Chinese National Standard GB 18030-2005: Information technology — Chinese coded character set”, which is the official character set of the People's Republic of China (PRC).
https://dev.mysql.com/doc/refman/5.7/en/comments.html
MySQL Server supports three comment styles: From a # character to the end of the line. In MySQL, the -- (double-dash) comment style requires the second dash to be followed by at least one whitespace or control character (such as a space, tab, ...
https://dev.mysql.com/doc/refman/5.7/en/compiler-characteristics.html
In some cases, the compiler used to build MySQL affects the features available for use. The notes in this section apply for binary distributions provided by Oracle Corporation or that you compile yourself from source. icc (Intel C++ Compiler) ...
https://dev.mysql.com/doc/refman/5.7/en/create-server.html
CREATE SERVER server_name FOREIGN DATA WRAPPER wrapper_name OPTIONS (option [, option] ...) option: { HOST character-literal | DATABASE character-literal | USER character-literal | PASSWORD character-literal | SOCKET character-literal | OWNER ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-secondary-indexes.html
A secondary index defined on a virtual column is sometimes referred to as a “virtual index”. A secondary index may be created on one or more virtual columns or on a combination of virtual columns and regular columns or stored generated columns.
https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization.html
After MySQL is installed, the data directory must be initialized, including the tables in the mysql system database: For some MySQL installation methods, data directory initialization is automatic, as described in Section 2.9, “Postinstallation ...