Add unit test

Src/Asp.Net/SqlServerTest/SqlServerTest.csproj

@@ -97,6 +97,7 @@
     <Compile Include="Models\OrderItem.cs" />
     <Compile Include="Demo\Demo0_SqlSugarClient.cs" />
     <Compile Include="Models\ViewOrder.cs" />
+    <Compile Include="UnitTest\UnitSubToList.cs" />
     <Compile Include="UnitTest\Models\EntityBase.cs" />
     <Compile Include="UnitTest\UnitByteArray.cs" />
     <Compile Include="UnitTest\UnitInsertNavOneToOne.cs" />

Src/Asp.Net/SqlServerTest/UnitTest/UnitSubToList.cs

@@ -0,0 +1,21 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+namespace OrmTest 
+{
+    public class UnitSubToList
+    {
+        public static void Init() 
+        {
+            var db = NewUnitTest.Db;
+            var test47 = db.Queryable<Order>().Select(it => new
+            {
+                disCount = SqlFunc.Subqueryable<Order>().Where(s=>s.Id==it.Id).ToList()
+            })
+            .ToList();
+        }
+    }
+}