I have a view of a content type that contains two different date fields (one with date repeats and one multivalued single dates). Only one date field is filled out at any given time. In the view's display, I have combined the two fields by hiding the first date field and rewriting the second and including the replacement token of the first and second. Is there any way to now use the rewritten field to sort the view in ascending order based on this combined date field? It appears it sorts it based on the original value of the date field.

I have done my research and have only found old, somewhat-related, threads with dead-ends.

[views sorting by rewritten field?](https://drupal.org/node/1808422)

[Table does not sort on rewritten field, but on original field](https://drupal.org/node/1260160)

[Views: custom field for sort criteria](https://drupal.stackexchange.com/questions/75893/views-custom-field-for-sort-criteria)

[Sort by global:custom text. Is it possible?](https://drupal.org/node/639758)

I was hoping there is a new or sneaky way of making this happen.