From b3f352b86a71d4d30d3abc920e148219ce42b6f9 Mon Sep 17 00:00:00 2001
From: Fendy Heryanto <fendy@nocodb.com>
Date: Fri, 30 Jan 2026 15:07:11 +0700
Subject: [PATCH] do not override cdf when update

---
 packages/nocodb/src/services/columns.service.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/packages/nocodb/src/services/columns.service.ts b/packages/nocodb/src/services/columns.service.ts
index 7dbc2ac8a8..df567905fb 100644
--- a/packages/nocodb/src/services/columns.service.ts
+++ b/packages/nocodb/src/services/columns.service.ts
@@ -2181,8 +2181,17 @@ export class ColumnsService implements IColumnsService {
         }
       }
 
+      const originalCdf = colBody.cdf;
       colBody = await getColumnPropsFromUIDT(colBody, source);
 
+      if (
+        typeof colBody.cdf !== 'undefined' &&
+        typeof originalCdf === 'undefined'
+      ) {
+        // do not override cdf when request is undefined
+        colBody.cdf = originalCdf;
+      }
+
       await this.updateMetaAndDatabase(context, {
         table,
         // pass id since it won't be part of api request