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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-quick-start.html
Tables in the performance_schema database can be grouped according to the type of information in them: Current events, event histories and summaries, object instances, and setup (configuration) information. For example: mysql> UPDATE ...To enable or ... This section briefly introduces the Performance Schema with examples that show how to use ...row *************************** THREAD_ID: 0 EVENT_ID: 5523 END_EVENT_ID: 5523 EVENT_NAME: wait/synch/mutex/mysys/THR_LOCK::mutex SOURCE: thr_lock.c:525 TIMER_START: 201660494489586 TIMER_END: 201660494576112 TIMER_WAIT: 86526 SPINS: NULL OBJECT_SCHEMA: NULL OBJECT_NAME: NULL INDEX_NAME: NULL OBJECT_TYPE: NULL OBJECT_INSTANCE_BEGIN: 142270668 ...
https://dev.mysql.com/doc/refman/5.7/en/sys-processlist.html
The MySQL process list indicates the operations currently being performed by the set of threads executing within the server. db The default database for the thread, or NULL if there is none. They provide more complete information than the SHOW ...
https://dev.mysql.com/doc/refman/5.7/en/macos-installation-prefpane.html
You may be prompted for the username and password of a user with administrator privileges to start the MySQL server. You may be prompted for the username and password of a user with administrator privileges to stop the MySQL server. The preference ... The MySQL Installation Package includes a MySQL preference pane that enables you to start, stop, and control automated startup during boot of your MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-basics.html
Because it is ubiquitous, most users employ TCP/IP over Ethernet for NDB Cluster. The MySQL Cluster Manager client also supports commands for getting and setting the values of most node configuration parameters as well as mysqld server options and ...NDB Cluster's NDB storage engine contains a complete set of data, dependent only on other data within the cluster ...
https://dev.mysql.com/doc/refman/5.7/en/replication-problems.html
If the replication I/O thread state says Connecting to master, check the following: Verify the privileges for the user being used for replication on the source. If you have followed the instructions but your replication setup is not working, the ...
https://dev.mysql.com/doc/refman/5.7/en/compatibility.html
We are not afraid to add extensions to SQL or support for non-SQL features if this greatly increases the usability of MySQL Server for a large segment of our user base. Today MySQL Server handles terabyte-sized databases, but the code can also be ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-issues.html
(A gap event is a type of “incident event,” which indicates an incident that occurs that affects the contents of the database but that cannot easily be represented as a set of changes. For information about implementing this type of setup, see ...If this occurs, it is entirely possible for new data to be inserted into the source cluster without being recorded in the source SQL node's binary ...
https://dev.mysql.com/doc/refman/5.7/en/binary-varbinary.html
Instead, it causes the binary (_bin) collation for the column character set (or the table default character set if no column character set is specified) to be used, and the column itself stores nonbinary character strings rather than binary byte ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-shell-visual-studio.html
A newer user interface for displaying query results, where different views are presented from result sets returned by a MySQL Server like: Multiple tabs for each result set returned by an executed query. Designed and developed as a Visual Studio ...
https://dev.mysql.com/doc/refman/5.7/en/charset-collation-coercibility.html
A “system constant” (the string returned by functions such as USER() or VERSION()) has a coercibility of 3. For example, the following statement does not return an error: SELECT CONCAT(utf8_column, latin1_column) FROM t1; It returns a result ...