From 4f409702a8a7e28d0ead056909ab087e10c3be70 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Sat, 30 Jul 2022 18:10:52 +0800
Subject: [PATCH] Synchronization code

---
 .../SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToOne.cs  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToOne.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToOne.cs
index 88147a9ea..0cba19c8c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToOne.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavOneToOne.cs
@@ -12,6 +12,7 @@ namespace SqlSugar
         {
             var parentEntity = _ParentEntity;
             var parentList = _ParentList;
+            var isManyPk = parentEntity.Columns.Count(it => it.IsPrimarykey) > 1;
             var parentColumn = parentEntity.Columns.FirstOrDefault(it => it.PropertyName == nav.Navigat.Name);
             var parentPkColumn = parentEntity.Columns.FirstOrDefault(it => it.IsPrimarykey);
             var thisEntity = this._Context.EntityMaintenance.GetEntityInfo<TChild>();
@@ -33,7 +34,7 @@ namespace SqlSugar
                         }
 
                     }
-                    if (!IsDefaultValue(navPropertyValue))
+                    if (!IsDefaultValue(navPropertyValue)&& isManyPk==false)
                     {
                         this._Context.Updateable<DbTableInfo>
                            ().AS(parentEntity.DbTableName)