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https://dev.mysql.com/doc/internals/en/in-memory-record-layout.html
null bits: One bit per column that can be NULL. The "null bits" are rounded up to the next byte boundary. Length (pack_length) and layout of the fields depend on the field type: -- to be added -- Note: The "in-memory record layout" is used by the ...
https://dev.mysql.com/doc/internals/en/innodb-field-start-offsets.html
The Field Start Offsets is a list in which each entry is the position, relative to the Origin, of the start of the next field. The entries are in reverse order, that is, the first field's offset is at the end of the list. The first column's length ...
https://dev.mysql.com/doc/internals/en/select-special-engines.html
The normal engine can be replaced with such special engines only during the optimization process.
https://dev.mysql.com/doc/internals/en/tracing-example.html
The statement's execution is naturally made of "steps": "steps": [ { "join_preparation": { This is a join's preparation "select#": 1, for the first SELECT of the statement (which has only one, here). "rest_of_plan": [ { "database": "test", "table": ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-async-exec.html
If you are using a specific database in the current session, you can set this to NULL to continue using the current session database. If set to NULL, execute_prepared_stmt_async is used as the default task name. For example: mysql> CALL ... As of ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-data-drift-detection.html
mysql> CALL sys.ML_MODEL_LOAD(@census_model, NULL); Run ML_PREDICT_TABLE to generate a table of predictions. mysql> CALL sys.ML_MODEL_LOAD(@census_model, NULL); Run ML_PREDICT_ROW to generate predictions for a defined number of rows. MySQL HeatWave ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-load-model.html
The following example loads a MySQL HeatWave AutoML model from the model catalog by using the session variable mysql> CALL sys.ML_MODEL_LOAD(@census_model, NULL); Where: @census_model is the session variable that contains the model handle. NULL is ... You must load a machine learning model from the model catalog into MySQL HeatWave before running MySQL HeatWave AutoML routines other than ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-ml-model-export.html
ML_MODEL_EXPORT Overview After you run ML_MODEL_EXPORT, the output table has these columns and formats: chunk_id: INT AUTO_INCREMENT PRIMARY KEY model_object: LONGTEXT DEFAULT NULL model_metadata: JSON See Model Metadata. ML_MODEL_EXPORT should work ...Use this routine to export a model from the model catalog to a user defined ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-ml-model-load.html
Syntax Examples An example that specifies the model handle and sets the user parameter to NULL. mysql> CALL sys.ML_MODEL_LOAD('ml_data.iris_train_user1_1636729526', NULL); An example that specifies a session variable containing the model handle.
https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-conversion.html
This section describes issues that you may face when converting character data between the utf8mb3 and utf8mb4 character sets. Note This discussion focuses primarily on converting between utf8mb3 and utf8mb4, but similar principles apply to ...