Refs #32673, Refs #35295 -- Avoided wrapping rhs direct values in lookups.

django/db/models/lookups.py

@@ -122,7 +122,7 @@ class Lookup(Expression):
             # Ensure expression is wrapped in parentheses to respect operator
             # precedence but avoid double wrapping as it can be misinterpreted
             # on some backends (e.g. subqueries on SQLite).
-            if sql and sql[0] != "(":
+            if not isinstance(value, Value) and sql and sql[0] != "(":
                 sql = "(%s)" % sql
             return sql, params
         else:

tests/lookup/tests.py

@@ -1366,6 +1366,12 @@ class LookupTests(TestCase):
             [stock_1, stock_2],
         )
 
+    def test_lookup_direct_value_rhs_unwrapped(self):
+        with self.assertNumQueries(1) as ctx:
+            self.assertIs(Author.objects.filter(GreaterThan(2, 1)).exists(), True)
+        # Direct values on RHS are not wrapped.
+        self.assertIn("2 > 1", ctx.captured_queries[0]["sql"])
+
 
 class LookupQueryingTests(TestCase):
     @classmethod