From c3d6483efaad4a6ef6cd6d825813fea7477e38d8 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Thu, 21 Apr 2022 17:07:54 +0800
Subject: [PATCH] update navgate query

---
 .../SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index 68b2701d5..b3d501717 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -1346,7 +1346,7 @@ namespace SqlSugar
                 pkName = ((mappingFiled as LambdaExpression).Body as MemberExpression).Member.Name;
             }
             var key = thisFiled.ToString() +typeof(ParameterT).FullName + typeof(T).FullName;
-            var ids = list.Select(it => it.GetType().GetProperty(pkName).GetValue(it)).ToArray();
+            var ids = list.Where(it=>it!=null).Select(it => it.GetType().GetProperty(pkName).GetValue(it)).Distinct().ToArray();
             if (queryableContext.TempChildLists == null)
                 queryableContext.TempChildLists = new Dictionary<string, object>();
             if (list != null &&  queryableContext.TempChildLists.ContainsKey(key))