Hi,
If I want to split a comma-separated column value into multiple rows, I would create a [Selection](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/creating_derived_views/creating_selection_views/creating_selection_views#creating-selection-views) view over the view containing this column. Then, I would perform a [Split](https://community.denodo.com/docs/html/browse/8.0/en/vdp/vql/functions/text_functions/text_functions#split) function for the particular field.
On doing this, an array with this values will be created. You could then make use of the [Flatten](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/creating_derived_views/creating_flatten_views/creating_flatten_views#creating-flatten-views) operation to place these values into multiple rows.
In addition, you could take a look at the similar [Q&A](https://community.denodo.com/answers/question/details?questionId=9060g000000kB0sAAE&title=Split+Comma+separated+string+to+rows) for more information.
Hope this helps!
