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https://dev.mysql.com/doc/heatwave/en/mys-hwaml-topic-modeling-prediction.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('topic_modeling_use_case', NULL); Run topic modeling on the dataset ... After training the model, you can run topic modeling on the trained ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-training-an-anomaly-detection-model.html
If running an unsupervised model, the target_column_name parameter must be set to NULL. If running a semi-supervised model: The target_column_name parameter must specify a column whose only allowed values are 0 (normal), 1 (anomalous), and NULL ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-using-a-forecasting-model.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('forecasting_use_case', NULL); Make predictions for the test dataset ...To generate predictions, use the sample data from the electricity_demand_test ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-virtual-table.html
CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) GENERATED ALWAYS AS (5) VIRTUAL ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4; However, metadata for such a column does appear in the INNODB_COLUMNS table. The ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-tables-table.html
Not all storage engines update this time, in which case, the value is always NULL. For views, most TABLES columns are 0 or NULL except that TABLE_NAME indicates the view name, CREATE_TIME indicates the creation time, and TABLE_COMMENT says VIEW. The ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-optimize-tablespace-page-allocation.html
By default, when additional space is required, InnoDB allocates pages to the tablespace and physically writes NULLs to those pages. You can disable innodb_extend_and_initialize on Linux systems to avoid physically writing NULLs to newly allocated ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-dict-obj-tree.html
The dict_obj_tree table provides a tree-based view of table information from the dict_obj_info table. This is intended primarily for use in testing, but can be useful in visualizing hierarchies of NDB database objects. This means that you must know ...
https://dev.mysql.com/doc/refman/8.4/en/other-vendor-data-types.html
To facilitate the use of code written for SQL implementations from other vendors, MySQL maps data types as shown in the following table. These mappings make it easier to import table definitions from other database systems into MySQL. If you create ...
https://dev.mysql.com/doc/refman/8.4/en/outer-join-optimization.html
If there is a row in A that matches the WHERE clause, but there is no row in B that matches the ON condition, an extra B row is generated with all columns set to NULL. For a LEFT JOIN, if the WHERE condition is always false for the generated NULL ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-ndb-sync-excluded-objects-table.html
row *************************** SCHEMA_NAME: NULL NAME: lg1 TYPE: LOGFILE GROUP REASON: Injected failure *************************** 2. row *************************** SCHEMA_NAME: NULL NAME: ts1 TYPE: TABLESPACE REASON: Injected failure ... This ...