What is the problem the feature request solves?
Follow up for #5323
When a partition has only one file, we still wrap the scan in SortPreservingMergeExec, which is a no-op merge. We can skip the wrapper in that case to avoid the small overhead.
Describe the potential solution
No response
Additional context
No response
What is the problem the feature request solves?
Follow up for #5323
When a partition has only one file, we still wrap the scan in SortPreservingMergeExec, which is a no-op merge. We can skip the wrapper in that case to avoid the small overhead.
Describe the potential solution
No response
Additional context
No response