I tried the following to get the column description in Tableau and it worked for me:
1. Create a data source connection to your Denodo database using the Denodo adapter.
2. Select Data Sources->Table->New Custom SQL
3. Enter the following query in the Edit Custom SQL window and click ok:
`select * from get_view_columns() where view_name = <view_name>`
4. Now you will be able to view the column description of the view you mentioned in the custom sql under the column name **"column_remarks"**.
To know more about get_view_columns stored procedure read the section " [GET_VIEW_COLUMNS](https://community.denodo.com/docs/html/browse/6.0/vdp/vql/stored_procedures/predefined_stored_procedures/get_view_columns#get-view-columns) " of the Virtual DataPort VQL Guide.
Hope this helps.