When you create or edit a transform, the data grid displays a preview of results of the transform. Transform previews
assist in specifying and validating the transformation steps before they are applied.
Although final results may not be exactly represented, a preview gives a good indication of the changes. When you review a preview, keep the following in mind:
- Previewed columns cannot be filtered or hidden.
- You cannot rename or change the data type of a previewed column until you add the change to your recipe.
- Selection of column headers is disabled.