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https://dev.mysql.com/doc/refman/8.0/en/sys-ps-trace-thread.html
Dumps all Performance Schema data for an instrumented thread to a .dot formatted graph file (for the DOT graph description language). in_outfile VARCHAR(255): The name to use for the .dot output file. in_max_runtime DECIMAL(20,2): The maximum ...
https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-optimization-tips.html
With Web servers, store images and other binary assets as files, with the path name stored in the database rather than the file itself. This section lists a number of miscellaneous tips for improving query processing speed: If your application ...
https://dev.mysql.com/doc/refman/8.0/en/server-logs.html
By default, the server writes files for all enabled logs in the data directory. The relay log is used only on replicas, to hold data changes from the replication source server that must also be made on the replica. You can force the server to close ...(The DDL log is always created when required, and has no user-configurable options; see The DDL Log.) The following log-specific sections provide information about the server options that enable ...
https://dev.mysql.com/doc/refman/8.0/en/default-privileges.html
For data directory initialization performed manually using mysqld --initialize, mysqld generates an initial random password, marks it expired, and writes it to the server error log. The MySQL installation process involves initializing the data ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-catalog-dashboard.html
You must provide credentials with root privileges to reconfigure these items. This action is repeated during next startup if MySQL Installer encounters an error downloading the catalog. For upgrades, a check box enables you to skip the upgrade check ... This section describes the MySQL Installer product catalog, the dashboard, and other actions related to product selection and ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldump-upgrade-testing.html
(This is also useful for testing downgrades.) On the production server: $> mysqldump --all-databases --no-data --routines --events > dump-defs.sql On the upgraded server: $> mysql < dump-defs.sql Because the dump file does not contain table data, it ...Then you can dump the database and database object definitions from the production server and load them into the new server to verify that they are handled ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-dict-obj-tree.html
This means that you must know the name of any tablespace or log file group associated with a given table, or obtain this information from SHOW CREATE TABLE and then querying INFORMATION_SCHEMA.FILES, or similar means as shown here: mysql> SHOW ...
https://dev.mysql.com/doc/refman/8.0/en/network-namespace-support.html
They must be invoked from within the network namespace of the server to which they are to connect.) Regular replication. The following sections describe how to use network namespaces in MySQL: Host System Prerequisites MySQL Configuration Network ...
https://dev.mysql.com/doc/refman/8.0/en/macos-installation-pkg.html
The package is located inside a disk image (.dmg) file that you first need to mount by double-clicking its icon in the Finder. To install MySQL using the package installer: Download the disk image (.dmg) file (the community version is available ...
https://dev.mysql.com/doc/refman/8.0/en/json-function-reference.html
->> Return value from JSON column after evaluating path and unquoting the result; equivalent to JSON_UNQUOTE(JSON_EXTRACT()). MySQL also supports “pretty-printing” of JSON values in an easy-to-read format, using the JSON_PRETTY() function. For ... Table 14.22 JSON Functions Name Description Introduced Deprecated -> Return value from JSON column after evaluating path; equivalent to ...