From 8872d9806bd467888d5837aac1336554d254b1f7 Mon Sep 17 00:00:00 2001
From: Phillip Cloud <417981+cpcloud@users.noreply.github.com>
Date: Thu, 7 Dec 2023 15:43:54 -0500
Subject: [PATCH] test: add test for #7350

---
 ibis/examples/tests/test_examples.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ibis/examples/tests/test_examples.py b/ibis/examples/tests/test_examples.py
index b17da0ed3227..3d8e8e6da170 100644
--- a/ibis/examples/tests/test_examples.py
+++ b/ibis/examples/tests/test_examples.py
@@ -119,3 +119,14 @@ def test_load_example(backend_name, example, columns):
     con = getattr(ibis, backend_name).connect()
     t = getattr(ibis.examples, example).fetch(backend=con)
     assert t.columns == columns
+
+
+def test_union_bug():
+    t = ibis.examples.penguins.fetch()
+    t = t.head(100)
+
+    sub1 = t.inner_join(t.view(), "island").mutate(island_right=lambda t: t.island)
+    sub2 = t.inner_join(t.view(), "sex").mutate(sex_right=lambda t: t.sex)
+    u = ibis.union(sub1, sub2)
+
+    assert len(u.execute())