Fixed #36822 -- Added parameter limit for PostgreSQL with server-side binding.

Author: JaeHyuck Sa

django/db/backends/postgresql/features.py

@@ -151,6 +151,12 @@ def uses_server_side_binding(self):
         options = self.connection.settings_dict["OPTIONS"]
         return is_psycopg3 and options.get("server_side_binding") is True
 
+    @cached_property
+    def max_query_params(self):
+        if self.uses_server_side_binding:
+            return 2**16 - 1
+        return None
+
     @cached_property
     def prohibits_null_characters_in_text_exception(self):
         if is_psycopg3:

tests/backends/postgresql/test_features.py

@@ -0,0 +1,14 @@
+import unittest
+
+from django.db import connection
+from django.test import TestCase
+
+
+@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL tests")
+class FeaturesTests(TestCase):
+    def test_max_query_params_respects_server_side_params(self):
+        if connection.features.uses_server_side_binding:
+            limit = 2**16 - 1
+        else:
+            limit = None
+        self.assertEqual(connection.features.max_query_params, limit)