The forums are ambiguous.
Some folks argue indexing impacts sorting - or imply such in their explanations on other issues.
As far as I am aware, indexing impacts searches (find) and relationship joins (which are finds in their own right).
But not sorting.
The FMPA documentation does not mention that indexing is a factor in sort performance.
Can someone clarify the reality once and for all?
That is, if I sort 5 million records on an unindexed field, the time taken is the same as if the field were indexed.