From da5fa29c76680a0d35494b2c6f6d7701b7056bd4 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Wed, 6 Jul 2022 15:27:41 +0800
Subject: [PATCH] Update TableDifferenceProvider.cs

---
 .../Abstract/CodeFirstProvider/TableDifferenceProvider.cs       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Src/Asp.Net/SqlSugar/Abstract/CodeFirstProvider/TableDifferenceProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/CodeFirstProvider/TableDifferenceProvider.cs
index 823ab625f..753c45c41 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/CodeFirstProvider/TableDifferenceProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/CodeFirstProvider/TableDifferenceProvider.cs
@@ -58,6 +58,8 @@ namespace SqlSugar
             foreach (var tableInfo in tableInfos)
             {
                 TableDifferenceInfo addItem = new TableDifferenceInfo();
+                if (tableInfo.OldTableInfo == null)
+                    tableInfo.OldTableInfo = new DbTableInfo();
                 addItem.TableName = tableInfo.OldTableInfo.Name;
                 addItem.AddColums = GetAddColumn(tableInfo);
                 addItem.UpdateColums = GetUpdateColumn(tableInfo);