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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-log-statistics.html
The NDB management client's CLUSTERLOG STATISTICS command can provide a number of useful statistics in its output. Counters providing information about the state of the cluster are updated at 5-second reporting intervals by the transaction ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-events-waits-current-table.html
For table I/O waits (events for the wait/io/table/sql/handler instrument), NUMBER_OF_BYTES indicates the number of rows. The table stores one row per thread showing the current status of the thread's most recent monitored wait event, so there is no ...
https://dev.mysql.com/doc/refman/8.4/en/problems-connecting.html
If you encounter problems when you try to connect to the MySQL server, the following items describe some courses of action you can take to correct the problem. Check to make sure that there is no firewall blocking access to MySQL. Your firewall may ...To correct this when you invoke a client program, specify a --port option to indicate the proper port number, or a --socket option to indicate the proper named pipe or Unix socket ...
https://dev.mysql.com/doc/refman/8.4/en/spatial-geojson-functions.html
MySQL also supports a native JSON data type and a set of SQL functions to enable operations on JSON values. mysql> SELECT ST_AsGeoJSON(ST_GeomFromText('POINT(11.11111 12.22222)'),2); +-------------------------------------------------------------+ | ... This section describes functions for converting between GeoJSON documents and spatial ...
https://dev.mysql.com/doc/refman/8.4/en/telemetry-trace-configuration.html
The following configuration options are available: Table 35.2 mysql client Telemetry Option Summary Option Name Description --telemetry_client Enables the telemetry client. Server Configuration Client Configuration Client Configuration Example ...
https://dev.mysql.com/doc/refman/8.4/en/window-functions-frames.html
Aggregate functions used as window functions operate on rows in the current row frame, as do these nonaggregate window functions: FIRST_VALUE() LAST_VALUE() NTH_VALUE() Standard SQL specifies that window functions that operate on the entire ... The ...
https://dev.mysql.com/doc/refman/8.4/en/xa-states.html
For an ACTIVE XA transaction, issue the SQL statements that make up the transaction, and then issue an XA END statement. Disabling detached XA transactions is not recommended for a MySQL server instance used in group replication; see Server Instance ... An XA transaction progresses through the following states: Use XA START to start an XA transaction and put it in the ACTIVE ...
https://dev.mysql.com/doc/c-api/8.4/en/c-api-threaded-clients.html
This section provides guidance for writing client programs that use the thread-related functions in the MySQL C API. For examples of source code that uses them, look in the client directory of a MySQL source distribution: The source for mysqlimport ...For further information about these functions, see Section 8.2, “C API Threaded Function ...
https://dev.mysql.com/doc/ndb-operator/8.4/en/crd-ndbclusterspec.html
managementNode (NdbManagementNodeSpec): (optional) Specifies the configuration of the management node running in MySQL Cluster. mysqlNode (NdbMysqldSpec): (optional) Specification for any MySQL Servers run as NDB Cluster SQL nodes. NDB Operator ...
https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-1-0.html
Version 8.1.0 is a new GA release of MySQL Connector/J. MySQL Connector/J 8.1.0 supersedes the 8.0 series and is recommended for use on production systems. This release can be used against MySQL Server version 5.7 and later. (WL #15259) Packaging: ...It supports the Java Database Connectivity (JDBC) 4.2 API, and implements the X ...