Fix typo in header comment for set_operation_ordered_results_useful

Reported-by: Richard Guo
Discussion: https://postgr.es/m/CAMbWs492vMy3XNjDZRtqtHfFTK6HVeDwhrEQH7eXGgF_h5Jnzw@mail.gmail.com

diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index f2b0bcfdf50ba1d0fc923fc79808d1a88f2a3e5a..9c3822f19add5ed73cc2f6cc9ccba48d73d6e380 100644 (file)
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -181,7 +181,7 @@ plan_set_operations(PlannerInfo *root)
  * set_operation_ordered_results_useful
  *             Return true if the given SetOperationStmt can be executed by utilizing
  *             paths that provide sorted input according to the setop's targetlist.
- *             Returns false when sorted paths are not any more useful then unsorted
+ *             Returns false when sorted paths are not any more useful than unsorted
  *             ones.
  */
 bool