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https://dev.mysql.com/doc/connector-j/en/connector-j-opentelemetry.html
OpenTelemetry is a set of APIs, libraries, agents, and instrumentation to provide observability for applications and their interactions with one another. It enables developers to instrument their code so that they can export observability data ...
https://dev.mysql.com/doc/connector-j/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/refman/8.4/en/assignment-operators.html
Table 14.6 Assignment Operators Name Description := Assign a value = Assign a value (as part of a SET statement, or as part of the SET clause in an UPDATE statement) := Assignment operator. Causes the user variable on the left hand side of the ...
https://dev.mysql.com/doc/refman/8.4/en/audit-log.html
Note MySQL Enterprise Audit is an extension included in MySQL Enterprise Edition, a commercial product. MySQL Enterprise Edition includes MySQL Enterprise Audit, implemented using a server plugin named audit_log. MySQL Enterprise Audit uses the ...
https://dev.mysql.com/doc/refman/8.4/en/binary-log.html
The binary log contains “events” that describe database changes such as table creation operations or changes to table data. It also contains events for statements that potentially could have made changes (for example, a DELETE which matched no ...
https://dev.mysql.com/doc/refman/8.4/en/charset-connection.html
The client sends SQL statements, such as queries, over the session connection. A “connection” is what a client program makes when it connects to the server, to begin a session within which it interacts with the server. The server sends ...
https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-sets.html
This section describes the collations available for Unicode character sets and their differentiating properties. MySQL supports multiple Unicode character sets: utf8mb4: A UTF-8 encoding of the Unicode character set using one to four bytes per ...
https://dev.mysql.com/doc/refman/8.4/en/condition-filtering.html
In join processing, prefix rows are those rows passed from one table in a join to the next. In general, the optimizer attempts to put tables with low prefix counts early in the join order to keep the number of row combinations from increasing ...
https://dev.mysql.com/doc/refman/8.4/en/create-logfile-group.html
CREATE LOGFILE GROUP logfile_group ADD UNDOFILE 'undo_file' [INITIAL_SIZE [=] initial_size] [UNDO_BUFFER_SIZE [=] undo_buffer_size] [REDO_BUFFER_SIZE [=] redo_buffer_size] [NODEGROUP [=] nodegroup_id] [WAIT] [COMMENT [=] 'string'] ENGINE [=] ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-foreign-keys.html
Example queries are show here: mysql> SELECT * FROM INFORMATION_SCHEMA.INNODB_FOREIGN \G *************************** 1. MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help ...