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https://dev.mysql.com/doc/internals/en/information-schema-optimizer-trace-table.html
TRACE: The trace, in JSON format (see json.org: basically it has scalars (number, string, bool) and structures (either arrays or associative arrays)).
https://dev.mysql.com/doc/internals/en/optimizer-late-nulls-filtering.html
Suppose we have a query plan with table tblX being accessed via the ref access method: tblX.key_part1 = expr1 AND tblX.key_part2 = expr2 AND ... Before performing an index lookup, we determine whether any of the expri values is NULL. If it is, we ...
https://dev.mysql.com/doc/internals/en/test-execution-hanging.html
Symptom: No text flooding through the command window where a test is running. Run this command in a different window: tail -f <var_dir>/mysqld.1/data/mysql/general_log.CSV If you see some changes, your test is alive.
https://dev.mysql.com/doc/connectors/en/connector-j-client-side-failover-xdevapi.html
This is a sample X DevAPI URL for configuring client-side failover: mysqlx://sandy:mypassword@[host1:33060,host2:33061]/test With the client-side failover configured, when there is a failure to establish a connection, Connector/J keeps attempting to ... When using the X Protocol, Connector/J supports a client-side failover feature for establishing a ...
https://dev.mysql.com/doc/connectors/en/connector-j-reference-charsets.html
Setting the Character Encoding For Connector/J 8.0.25 and earlier: The character encoding between the client and the server is automatically detected upon connection (provided that the Connector/J connection properties characterEncoding and ...
https://dev.mysql.com/doc/connectors/en/connector-python-asyncio.html
Installing Connector/Python also installs the mysql.connector.aio package that integrates asyncio with the connector to allow integrating asynchronous MySQL interactions with an application. Functions included in the asyncio API must be used to ...
https://dev.mysql.com/doc/connector-python/en/connector-python-asyncio.html
Installing Connector/Python also installs the mysql.connector.aio package that integrates asyncio with the connector to allow integrating asynchronous MySQL interactions with an application. Functions included in the asyncio API must be used to ...
https://dev.mysql.com/doc/ndbapi/en/ndb-object.html
This section provides information about the Object class, which contains meta-information about database objects such as tables and indexes. Description This parameter specifies how data in the table or index is distributed among the cluster's data ...
https://dev.mysql.com/doc/ndbapi/en/overview-ndb-api.html
The NDB API is an object-oriented application programming interface for NDB Cluster that implements indexes, scans, transactions, and event handling. NDB transactions are ACID-compliant in that they provide a means to group operations in such a way ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-compliance-administration-standard-rules.html
The binary log enables point-in-time recovery, preventing data loss during a disaster recovery situation. It also enables you to review all alterations made to your database. When enabled, it causes a MySQL server to write informational log events ...