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https://dev.mysql.com/doc/refman/5.7/en/optimizing-subqueries.html
Development is ongoing, so no optimization tip is reliable for the long term. The following list provides some interesting tricks that you might want to play with. See also Section 8.2.2, “Optimizing Subqueries, Derived Tables, and View ...
https://dev.mysql.com/doc/refman/5.7/en/replication-gtids-auto-positioning.html
GTIDs replace the file-offset pairs previously required to determine points for starting, stopping, or resuming the flow of data between source and replica. When GTIDs are in use, all the information that the replica needs for synchronizing with ...
https://dev.mysql.com/doc/refman/5.7/en/security-plugins.html
MySQL includes several plugins that implement security features: Plugins for authenticating attempts by clients to connect to MySQL Server. For general discussion of the authentication process, see Section 6.2.13, “Pluggable Authentication”.
https://dev.mysql.com/doc/refman/5.7/en/server-options.html
When you start the mysqld server, you can specify program options using any of the methods described in Section 4.2.2, “Specifying Program Options”. The most common methods are to provide options in an option file or on the command line.
https://dev.mysql.com/doc/refman/5.7/en/shared-key-cache.html
Threads can access key cache buffers simultaneously, subject to the following conditions: A buffer that is not being updated can be accessed by multiple sessions. A buffer that is being updated causes sessions that need to use it to wait until the ...
https://dev.mysql.com/doc/refman/5.7/en/string-functions-charset.html
MySQL has many operators and functions that return a string. This section answers the question: What is the character set and collation of such a string? For simple functions that take string input and return a string result as output, the output's ...
https://dev.mysql.com/doc/refman/5.7/en/symbolic-links-to-tables.html
For files used by tables for other storage engines, you may get strange problems if you try to use symbolic links. For InnoDB tables, use the alternative technique explained in Section 14.6.1.2, “Creating Tables Externally” instead. Do not ...
https://dev.mysql.com/doc/refman/5.7/en/sys-format-path.html
Given a path name, returns the modified path name after replacing subpaths that match the values of the following system variables, in order: datadir tmpdir slave_load_tmpdir innodb_data_home_dir innodb_log_group_home_dir innodb_undo_directory ...
https://dev.mysql.com/doc/refman/5.7/en/traceable-statements.html
Statements which are traceable are listed here: SELECT INSERT REPLACE UPDATE DELETE EXPLAIN with any of the preceding statements SET DO DECLARE, CASE, IF, and RETURN as used in stored routines CALL Tracing is supported for both INSERT and REPLACE ...
https://dev.mysql.com/doc/refman/5.7/en/version-tokens-usage.html
Before using Version Tokens, install it according to the instructions provided at Section 5.5.5.2, “Installing or Uninstalling Version Tokens”. A scenario in which Version Tokens can be useful is a system that accesses a collection of MySQL ...