diff --git a/Src/Asp.Net/SqlServerTest/Demos/1_Query.cs b/Src/Asp.Net/SqlServerTest/Demos/1_Query.cs
index a5321d6c1..5c0f36cf1 100644
--- a/Src/Asp.Net/SqlServerTest/Demos/1_Query.cs
+++ b/Src/Asp.Net/SqlServerTest/Demos/1_Query.cs
@@ -436,6 +436,14 @@ namespace OrmTest.Demo
             var test41 = db.Queryable<Student>().Where(it => it.Id==((it.Id==1?2:3)==2?1:2)).ToList();
             var test42 = db.Queryable<Student>().Where(it => new int[] { 1, 2, 3 }.Contains(1)).ToList();
             var test43 = db.Queryable<Student>().Where(it => new int[] { 1, 2, 3 }.Contains(it.Id)).ToList();
+          
+            var test44 = db.Queryable<Student>().Select(it=>new {
+                x= SqlFunc.Subqueryable<DataTestInfo>().Where(x => false).Sum(x => x.Decimal1)
+            }).ToList();
+            decimal? p = null;
+            var test45 = db.Queryable<DataTestInfo>().Select(it => new {
+                x =p
+            }).ToList();
         }
         public static void Page()
         {
diff --git a/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs b/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
index 1132edcc3..fc4ed0226 100644
--- a/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
@@ -144,7 +144,7 @@ namespace SqlSugar
                                 if (readerValues.Any(it => it.Key.Equals(name, StringComparison.CurrentCultureIgnoreCase)))
                                 {
                                     var addValue = readerValues.ContainsKey(name) ? readerValues[name] : readerValues.First(it => it.Key.Equals(name, StringComparison.CurrentCultureIgnoreCase)).Value;
-                                    if (addValue == DBNull.Value)
+                                    if (addValue == DBNull.Value||addValue==null)
                                     {
                                         if (item.PropertyType.IsIn(UtilConstants.IntType, UtilConstants.DecType, UtilConstants.DobType, UtilConstants.ByteType))
                                         {