From 68a53b85067e49e1f9feb7be12dc90ab74cd4dc3 Mon Sep 17 00:00:00 2001
From: Muhammad Qasim Gulzar <19186089+qasimgulzar@users.noreply.github.com>
Date: Sun, 8 Mar 2026 06:12:57 +0500
Subject: [PATCH] fix: error on postgresql 14 due to BIGSERIAL (#38040)

This pull request makes a targeted update to how PostgreSQL database
types are specified in the courseware/fields.py file. Specifically,
it changes the type returned for PostgreSQL from BIGSERIAL to BIGINT
in both the db_type and rel_db_type methods. This ensures that
auto-incrementing behavior is not implicitly assumed and aligns with
scenarios where a plain integer type is needed.
---
 lms/djangoapps/courseware/fields.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lms/djangoapps/courseware/fields.py b/lms/djangoapps/courseware/fields.py
index 0ee7fad62f..a44c9791b8 100644
--- a/lms/djangoapps/courseware/fields.py
+++ b/lms/djangoapps/courseware/fields.py
@@ -21,7 +21,7 @@ class UnsignedBigIntAutoField(AutoField):
         elif "postgresql" in connection.settings_dict['ENGINE']:
             # Pg's bigserial is implicitly unsigned (doesn't allow negative numbers) and
             # goes 1-9.2x10^18
-            return "BIGSERIAL"
+            return "BIGINT"
         else:
             return None
 
@@ -31,6 +31,6 @@ class UnsignedBigIntAutoField(AutoField):
         elif connection.settings_dict['ENGINE'] == 'django.db.backends.sqlite3':
             return "integer"
         elif "postgresql" in connection.settings_dict['ENGINE']:
-            return "BIGSERIAL"
+            return "BIGINT"
         else:
             return None