1 files changed, 62 insertions, 1 deletions
diff --git a/tests/test_build.py b/tests/test_build.py
index b5d657c..fa9e7f8 100644
--- a/tests/test_build.py
+++ b/tests/test_build.py
@@ -1,6 +1,19 @@
 import unittest
 
-from sqlglot import and_, condition, exp, from_, not_, or_, parse_one, select
+from sqlglot import (
+    alias,
+    and_,
+    condition,
+    except_,
+    exp,
+    from_,
+    intersect,
+    not_,
+    or_,
+    parse_one,
+    select,
+    union,
+)
 
 
 class TestBuild(unittest.TestCase):
@@ -320,6 +333,54 @@ class TestBuild(unittest.TestCase):
                 lambda: exp.update("tbl", {"x": 1}, from_="tbl2"),
                 "UPDATE tbl SET x = 1 FROM tbl2",
             ),
+            (
+                lambda: union("SELECT * FROM foo", "SELECT * FROM bla"),
+                "SELECT * FROM foo UNION SELECT * FROM bla",
+            ),
+            (
+                lambda: parse_one("SELECT * FROM foo").union("SELECT * FROM bla"),
+                "SELECT * FROM foo UNION SELECT * FROM bla",
+            ),
+            (
+                lambda: intersect("SELECT * FROM foo", "SELECT * FROM bla"),
+                "SELECT * FROM foo INTERSECT SELECT * FROM bla",
+            ),
+            (
+                lambda: parse_one("SELECT * FROM foo").intersect("SELECT * FROM bla"),
+                "SELECT * FROM foo INTERSECT SELECT * FROM bla",
+            ),
+            (
+                lambda: except_("SELECT * FROM foo", "SELECT * FROM bla"),
+                "SELECT * FROM foo EXCEPT SELECT * FROM bla",
+            ),
+            (
+                lambda: parse_one("SELECT * FROM foo").except_("SELECT * FROM bla"),
+                "SELECT * FROM foo EXCEPT SELECT * FROM bla",
+            ),
+            (
+                lambda: parse_one("(SELECT * FROM foo)").union("SELECT * FROM bla"),
+                "(SELECT * FROM foo) UNION SELECT * FROM bla",
+            ),
+            (
+                lambda: parse_one("(SELECT * FROM foo)").union("SELECT * FROM bla", distinct=False),
+                "(SELECT * FROM foo) UNION ALL SELECT * FROM bla",
+            ),
+            (
+                lambda: alias(parse_one("LAG(x) OVER (PARTITION BY y)"), "a"),
+                "LAG(x) OVER (PARTITION BY y) AS a",
+            ),
+            (
+                lambda: alias(parse_one("LAG(x) OVER (ORDER BY z)"), "a"),
+                "LAG(x) OVER (ORDER BY z) AS a",
+            ),
+            (
+                lambda: alias(parse_one("LAG(x) OVER (PARTITION BY y ORDER BY z)"), "a"),
+                "LAG(x) OVER (PARTITION BY y ORDER BY z) AS a",
+            ),
+            (
+                lambda: alias(parse_one("LAG(x) OVER ()"), "a"),
+                "LAG(x) OVER () AS a",
+            ),
         ]:
             with self.subTest(sql):
                 self.assertEqual(expression().sql(dialect[0] if dialect else None), sql)