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https://dev.mysql.com/doc/refman/5.7/en/version-tokens-usage.html
Suppose that a management application communicates with a set of servers that are queried by clients to access employee and product databases (named emp and prod, respectively). All servers are permitted to process data retrieval statements, but ...
https://dev.mysql.com/doc/refman/5.7/en/xml-functions.html
Table 12.16 XML Functions Name Description ExtractValue() Extract a value from an XML string using XPath notation UpdateXML() Return replaced XML fragment This section discusses XML and related functionality in MySQL. See Section 4.5.1, “mysql ...
https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html
If applications require data storage using a different character set or collation, you can configure character set information several ways: Specify character settings per database. For example, applications that use one database might use the ...
https://dev.mysql.com/doc/refman/5.7/en/grant-tables.html
The mysql system database includes several grant tables that contain information about user accounts and the privileges held by them. For information about other tables in the system database, see Section 5.3, “The mysql System Database”. The ...
https://dev.mysql.com/doc/refman/5.7/en/server-options.html
--ignore-db-dir=dir_name Command-Line Format --ignore-db-dir=dir_name Deprecated 5.7.16 Type Directory name This option tells the server to ignore the given directory name for purposes of the SHOW DATABASES statement or INFORMATION_SCHEMA tables.
https://dev.mysql.com/doc/refman/5.7/en/backup-types.html
Physical (Raw) Versus Logical Backups Physical backups consist of raw copies of the directories and files that store database contents. This type of backup is suitable for large, important databases that need to be recovered quickly when problems ...
https://dev.mysql.com/doc/refman/5.7/en/identifier-mapping.html
There is a correspondence between database and table identifiers and names in the file system. For the basic structure, MySQL represents each database as a directory in the data directory, and each table by one or more files in the appropriate ...
https://dev.mysql.com/doc/refman/5.7/en/known-issues.html
Even if you use lower_case_table_names=2 (which enables MySQL to remember the case used for databases and table names), MySQL does not remember the case used for database names for the function DATABASE() or within the various logs (on ... This ...
https://dev.mysql.com/doc/refman/5.7/en/updating-yum-repo.html
For supported Yum-based platforms (see Section 2.5.1, “Installing MySQL on Linux Using the MySQL Yum Repository”, for a list), you can perform an in-place upgrade for MySQL (that is, replacing the old version and then running the new version ...
https://dev.mysql.com/doc/refman/5.7/en/creating-many-tables.html
If you have many MyISAM tables in the same database directory, open, close, and create operations are slow. If you execute SELECT statements on many different tables, there is a little overhead when the table cache is full, because for every table ...