Search Results
https://dev.mysql.com/doc/connector-j/en/connector-j-unix-socket.html
Connector/J does not natively support connections to MySQL Servers with Unix domain sockets. Such a custom factory should implement the com.mysql.cj.protocol.SocketFactory interface or the legacy com.mysql.jdbc.SocketFactory interface of ...
https://dev.mysql.com/doc/refman/8.4/en/alter-tablespace.html
In MySQL 8.4, it is supported in the following two cases only: ALTER TABLESPACE tablespace_name ADD DATAFILE 'file_name' ENGINE={NDB|NDBCLUSTER} ALTER UNDO TABLESPACE tablespace_name SET {ACTIVE|INACTIVE} ENGINE=INNODB You should expect the eventual ...It can be used to add a new data file to, or to drop a data file from an NDB ...
https://dev.mysql.com/doc/refman/8.4/en/audit-log-restrictions.html
MySQL Enterprise Audit is subject to these general restrictions: Only SQL statements are logged. It is possible to use MySQL Enterprise Audit with MySQL NDB Cluster, subject to the following conditions: All changes to be logged must be done using ...Changes made by no-SQL APIs, such as memcached, Node.JS, and the NDB API, are not ...
https://dev.mysql.com/doc/refman/8.4/en/binary-log-formats.html
The server uses several logging formats to record information in the binary log: Replication capabilities in MySQL originally were based on propagation of SQL statements from source to replica. You can cause MySQL to use mixed logging explicitly by ...You can cause this format to be used by starting the server with ...
https://dev.mysql.com/doc/refman/8.4/en/blackhole-storage-engine.html
To examine the source for the BLACKHOLE engine, look in the sql directory of a MySQL source distribution. The “dummy” mysqld process acts as a replica, applying the desired combination of replicate-do-* and replicate-ignore-* rules, and writes a ... The BLACKHOLE storage engine acts as a “black hole” that accepts data but throws it away and does not store ...
https://dev.mysql.com/doc/refman/8.4/en/char.html
MySQL collations have a pad attribute of PAD SPACE, other than Unicode collations based on UCA 9.0.0 and higher, which have a pad attribute of NO PAD. Note For more information about MySQL character sets and collations, see Chapter 12, Character ...
https://dev.mysql.com/doc/refman/8.4/en/charset-conversion.html
If you use a binary column to store information in multiple character sets, MySQL has no way to know which values use which character set and cannot convert the data properly. A special case occurs if you have old tables from before MySQL 4.1 where ... To convert a binary or nonbinary string column to use a particular character set, use ALTER ...
https://dev.mysql.com/doc/refman/8.4/en/charset-cp932.html
Why is cp932 needed? In MySQL, the sjis character set corresponds to the Shift_JIS character set defined by IANA, which supports JIS X0201 and JIS X0208 characters. These problems stem from the following factors: MySQL automatically converts ...
https://dev.mysql.com/doc/refman/8.4/en/charset-introducer.html
For example, bit operations permit numeric or binary string arguments in MySQL 8.4 and higher, but treat hexadecimal and bit literals as numbers by default. MySQL determines the character set and collation of a character string literal, hexadecimal ... A character string literal, hexadecimal literal, or bit-value literal may have an optional character set introducer and COLLATE clause, to designate it as a string that uses a particular character set and collation: [_charset_name] literal [COLLATE collation_name] The _charset_name expression is formally called an ...
https://dev.mysql.com/doc/refman/8.4/en/charset-literal.html
MySQL determines the character set and collation of a character string literal in the following manner: If both _charset_name and COLLATE collation_name are specified, character set charset_name and collation collation_name are used. Example 1: ...