From 40d72c675774bc85f97675a6754645b2d833bf5d Mon Sep 17 00:00:00 2001
From: Jianjun Liao <jianjun.liao@outlook.com>
Date: Fri, 26 Dec 2025 18:41:32 +0800
Subject: [PATCH] fix unknown expression column when compare rows

Signed-off-by: Jianjun Liao <jianjun.liao@outlook.com>
---
 sync_diff_inspector/utils/utils.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sync_diff_inspector/utils/utils.go b/sync_diff_inspector/utils/utils.go
index 5587f9b81..9daee7b87 100644
--- a/sync_diff_inspector/utils/utils.go
+++ b/sync_diff_inspector/utils/utils.go
@@ -566,6 +566,9 @@ func CompareData(map1, map2 map[string]*dbutil.ColumnData, orderKeyCols, columns
 	}()
 
 	for _, column := range columns {
+		if column.Hidden {
+			continue
+		}
 		if data1, ok = map1[column.Name.O]; !ok {
 			return false, 0, errors.Errorf("upstream don't have key %s", column.Name.O)
 		}