DOC: Ordering during set operation on index (#3123) (#14629)

pandas-dev · Nov 10, 2016 · 06b35db · 06b35db
1 parent 2e276fb
commit 06b35db
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diff --git a/doc/source/indexing.rst b/doc/source/indexing.rst
@@ -1467,6 +1467,10 @@ with duplicates dropped.
    idx1.symmetric_difference(idx2)
    idx1 ^ idx2
 
+.. note::
+
+   The resulting index from a set operation will be sorted in ascending order.
+
 Missing values
 ~~~~~~~~~~~~~~