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https://dev.mysql.com/doc/extending-mysql/8.4/en/using-own-protocol-trace-plugins.html
Function members for which the plugin needs no processing can be declared as NULL in the descriptor, in which case you need not write any corresponding function. trace_stop() is passed the connection handler and a pointer to the memory allocated by ... Note To use your own protocol trace plugins, you must configure MySQL with the WITH_TEST_TRACE_PLUGIN CMake option disabled because only one protocol trace plugin can be loaded at a time and an error occurs for attempts to load a second ...
https://dev.mysql.com/doc/mysql-ai/9.4/en/mys-ai-aml-model-sharing.html
For example: mysql> CALL sys.ML_MODEL_IMPORT(NULL, JSON_OBJECT('schema', 'ML_SCHEMA_admin', 'table', 'model_export'), @bank_export); NULL means that a model from a table is imported, and not a model object. mysql> CALL ... This topic describes how ...
https://dev.mysql.com/doc/mysql-ai/9.4/en/mys-ai-aml-using-a-recommendation-model-ratings-rankings.html
For the option to set the user name, you can set it to NULL. mysql> CALL sys.ML_MODEL_LOAD(@model, NULL); The following example uses the model handle. mysql> CALL sys.ML_MODEL_LOAD('recommendation_use_case', NULL); Make predictions for the test ...
https://dev.mysql.com/doc/mysql-ai/9.4/en/mys-ai-genai-vector-store-load.html
This section describes how to generate vector embeddings for files or folders stored in , and load the embeddings into a vector store table. The following sections in this topic describe how to ingest files into a vector store: Before You Begin ...
https://dev.mysql.com/doc/internals/en/packed-record-layout.html
pack bits (!= NULL bits!): One bit per packable column: FIELD_BLOB: Set if blob is empty. => The "pack bits" are rounded up to the next byte boundary. Each field is copied verbatim unless packed according to the "pack bits" paragraph.
https://dev.mysql.com/doc/relnotes/connector-odbc/en/news-9-0-0.html
Now the SQLConnect() values are prioritized except for SQLConnect() values defined as NULL. Functionality Added or Changed Bugs Fixed Functionality Added or Changed For the ANSI driver, converting to and from the character set specified by the ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-limitations-other.html
For example, the following query is not offloaded: mysql> SELECT AVG(c1) AS value FROM t1 WHERE c1 IS NULL; Primary keys with column prefixes. For a list of supported SQL modes, see Section 5.2, “Supported SQL Modes”. The WITH ROLLUP modifier in ...
https://dev.mysql.com/doc/refman/8.4/en/audit-log-logging-configuration.html
If the system variable value is OFF, a null value is written to the log file for these fields. This section describes how to configure audit logging characteristics, such as the file to which the audit log plugin writes events, the format of ...
https://dev.mysql.com/doc/refman/8.4/en/charset-collation-implementations.html
Example: "U+0000 NULL" does not have a weight and is ignorable. MySQL implements several types of collations: Simple collations for 8-bit character sets This kind of collation is implemented using an array of 256 weights that defines a one-to-one ...
https://dev.mysql.com/doc/refman/8.4/en/example-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column ...