From d4f3c109d6d6f2d0f4ae3780f7a74457bfd4a28a Mon Sep 17 00:00:00 2001
From: Jinzhu <wosmvp@gmail.com>
Date: Tue, 13 Jul 2021 21:29:31 +0800
Subject: [PATCH] Fix OnConflict with one column, close #4370

---
 callbacks/create.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/callbacks/create.go b/callbacks/create.go
index 2ebe5cab..8a3c593c 100644
--- a/callbacks/create.go
+++ b/callbacks/create.go
@@ -344,7 +344,7 @@ func ConvertToCreateValues(stmt *gorm.Statement) (values clause.Values) {
 
 	if c, ok := stmt.Clauses["ON CONFLICT"]; ok {
 		if onConflict, _ := c.Expression.(clause.OnConflict); onConflict.UpdateAll {
-			if stmt.Schema != nil && len(values.Columns) > 1 {
+			if stmt.Schema != nil && len(values.Columns) >= 1 {
 				selectColumns, restricted := stmt.SelectAndOmitColumns(true, true)
 
 				columns := make([]string, 0, len(values.Columns)-1)