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https://dev.mysql.com/doc/refman/8.0/en/converting-tables-to-innodb.html
Note Partitioned MyISAM tables created in previous versions of MySQL are not compatible with MySQL 8.0. When loading large volumes of data with a sequence of INSERT statements, periodically COMMIT the results to avoid having transactions that last ... If you have MyISAM tables that you want to convert to InnoDB for better reliability and scalability, review the following guidelines and tips before ...
https://dev.mysql.com/doc/refman/8.0/en/replication-solutions-unexpected-replica-halt.html
From MySQL 8.0, this repository is created by default as an InnoDB table named mysql.slave_relay_log_info. GTID auto-positioning means the replica can reliably identify and retrieve missing transactions, even if there are gaps in the sequence of ...
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-collations.html
Binary strings are sequences of bytes and the numeric values of those bytes determine comparison and sort order. The binary collation differs from _bin collations in several respects, discussed in the following sections: The Unit for Comparison and ... This section describes how the binary collation for binary strings compares to _bin collations for nonbinary ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
*/ C-style comment syntax, with a + character following the /* comment opening sequence. Consider this sequence of statements: SET @saved_val = @@SESSION.var_name; SET @@SESSION.var_name = value; SELECT ... SET @@SESSION.var_name = @saved_val; The ... One means of control over optimizer strategies is to set the optimizer_switch system variable (see Section 10.9.2, “Switchable ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-restore.html
This program reads the files created as a result of the backup and inserts the stored information into the database. ndb_restore must be executed once for each of the backup files that were created by the START BACKUP command used to create the ...
https://dev.mysql.com/doc/refman/8.0/en/ansi-diff-comments.html
MySQL Server supports a variant of the -- comment style; the -- start-comment sequence is accepted as such, but must be followed by a whitespace character such as a space or newline. To keep this from happening, MySQL requires a whitespace character ... Standard SQL uses the C syntax /* this is a comment */ for comments, and MySQL Server supports this syntax as ...
https://dev.mysql.com/doc/refman/8.0/en/charset-gb18030.html
If an incoming sequence is illegal, an error or warning is returned. If an illegal sequence is used in CONVERT(), an error is returned. The character set determines the length of a sequence using the first 1 or 2 bytes. In MySQL, the gb18030 ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-rule-based-filtering.html
The log_filter_dragnet log filter component enables log filtering based on user-defined rules. To enable the log_filter_dragnet filter, first load the filter component, then modify the log_error_services value. The following example enables ...
https://dev.mysql.com/doc/refman/8.0/en/numeric-type-attributes.html
When you insert a value of NULL into an indexed AUTO_INCREMENT column, the column is set to the next sequence value. (AUTO_INCREMENT sequences begin with 1.) Storing 0 into an AUTO_INCREMENT column has the same effect as storing NULL, unless the ...
https://dev.mysql.com/doc/refman/8.0/en/show-engine.html
For rwlocks, the Name field reports the source file where the rwlock is implemented, and the line number in the file where the rwlock is created. The remaining rows from the output of SHOW ENGINE NDB STATUS which are most likely to prove useful in ... SHOW ENGINE engine_name {STATUS | MUTEX} SHOW ENGINE displays operational information about a storage ...