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https://dev.mysql.com/doc/refman/5.7/en/windows-symbolic-links.html
On Windows, symbolic links can be used for database directories. This enables you to put a database directory at a different location (for example, on a different disk) by setting up a symbolic link to it. Use of database symlinks on Windows is ...
https://dev.mysql.com/doc/refman/5.7/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 12.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/5.7/en/explain-output.html
unique_subquery This type replaces eq_ref for some IN subqueries of the following form: value IN (SELECT primary_key FROM single_table WHERE some_expr) unique_subquery is just an index lookup function that replaces the subquery completely for better ... The EXPLAIN statement provides information about how MySQL executes ...
https://dev.mysql.com/doc/refman/5.7/en/myisam-key-cache.html
To minimize disk I/O, the MyISAM storage engine exploits a strategy that is used by many database management systems. Otherwise, the server chooses a cache block buffer containing a different table index block (or blocks) and replaces the data ...
https://dev.mysql.com/doc/refman/5.7/en/programs-overview.html
To use client programs, mysqld must be running, because clients gain access to databases by connecting to the server. mysql_install_db This program initializes the MySQL data directory, creates the mysql database and initializes its grant tables ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html
You can precede the SELECT by IGNORE or REPLACE to indicate how to handle rows that duplicate unique key values. With REPLACE, new rows replace rows that have the same unique key value. If neither IGNORE nor REPLACE is specified, duplicate unique ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-usage.html
Items then can be selected from registered dictionaries and used as random values or as replacements for other values. Its arguments are the term to replace, the dictionary in which the term appears, and the dictionary from which to choose a ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-auto-increment-handling.html
This includes single-row and multiple-row INSERT and REPLACE statements that do not have a nested subquery, but not INSERT ... InnoDB provides a configurable locking mechanism that can significantly improve scalability and performance of SQL ...
https://dev.mysql.com/doc/refman/5.7/en/json-modification-functions.html
For a comparison of JSON_INSERT(), JSON_REPLACE(), and JSON_SET(), see the discussion of JSON_SET(). If the second object has a member with a key matching a member in the first object, JSON_MERGE_PATCH() replaces the value in the first object with ... The functions in this section modify JSON values and return the ...
https://dev.mysql.com/doc/refman/5.7/en/outer-join-simplification.html
This results in a query with no outer joins at all: SELECT * FROM (T1 INNER JOIN T2 ON T2.A=T1.A), T3 WHERE T3.C > 0 AND T3.B=T2.B Sometimes the optimizer succeeds in replacing an embedded outer join operation, but cannot convert the embedding outer ... Table expressions in the FROM clause of a query are simplified in many ...