1 files changed, 13 insertions, 0 deletions
diff --git a/jstests/core/query/or/ore.js b/jstests/core/query/or/ore.js
new file mode 100644
index 00000000000..756db6215c5
--- /dev/null
+++ b/jstests/core/query/or/ore.js
@@ -0,0 +1,13 @@
+// verify that index direction is considered when deduping based on an earlier
+// index
+
+t = db.jstests_ore;
+t.drop();
+
+t.createIndex({a: -1});
+t.createIndex({b: 1});
+
+t.save({a: 1, b: 1});
+t.save({a: 2, b: 1});
+
+assert.eq(2, t.count({$or: [{a: {$in: [1, 2]}}, {b: 1}]}));