If you are on MySQL 9.0.0 or higher, verify what models are currently loaded with the ML_MODEL_ACTIVE routine.

mysql> CALL sys.ML_MODEL_ACTIVE('all', @model_info);

Select the session variable created to view all loaded models.

mysql> SELECT JSON_PRETTY(@model_info);
+-----------------------------------------------------------+
| JSON_PRETTY(@model_info)                                  |
+-----------------------------------------------------------+
| [
  {
    "total model size(bytes)": 50209
  },
  {
    "user1": [
      {
        "recommendation_use_case": {
          "format": "HWMLv2.0",
          "model_size(byte)": 15609
        }
      },
      {
        "recommendation_use_case2": {
          "format": "HWMLv2.0",
          "model_size(byte)": 8766
        }
      },
      {
        "recommendation_use_case3": {
          "format": "HWMLv2.0",
          "model_size(byte)": 8402
        }
      },
      {
        "recommendation_use_case4": {
          "format": "HWMLv2.0",
          "model_size(byte)": 17432
        }
      }
    ]
  }
] |
+-----------------------------------------------------------+
1 row in set (0.0411 sec)

Refer to the appropriate model handle to unload. Alternatively, use the session variable for the model handle.

The following example unloads a model by using the model handle:

mysql> CALL sys.ML_MODEL_UNLOAD('recommendation_use_case');

Where:

The following example unloads a model by using the session variable for the model handle:

mysql> CALL sys.ML_MODEL_UNLOAD(@recommendation_model);

Where:

If you are on MySQL 9.0.0, run ML_MODEL_ACTIVE again to confirm the model is successfully unloaded

mysql> CALL sys.ML_MODEL_ACTIVE('all', @model_info);
mysql> SELECT JSON_PRETTY(@model_info);
+-----------------------------------------------------------+
| JSON_PRETTY(@model_info)                                  |
+-----------------------------------------------------------+
| [
  {
    "total model size(bytes)": 34600
  },
  {
    "user1": [
      {
        "recommendation_use_case2": {
          "format": "HWMLv2.0",
          "model_size(byte)": 8766
        }
      },
      {
        "recommendation_use_case3": {
          "format": "HWMLv2.0",
          "model_size(byte)": 8402
        }
      },
      {
        "recommendation_use_case4": {
          "format": "HWMLv2.0",
          "model_size(byte)": 17432
        }
      }
    ]
  }
] |
+-----------------------------------------------------------+
1 row in set (0.0411 sec)

The list of loaded models shows the model is unloaded.