Update GroupBy exp to sql

Src/Asp.Net/SqlServerTest/SqlServerTest.csproj

@@ -100,6 +100,7 @@
     <Compile Include="UnitTest\Models\UserEntity.cs" />
     <Compile Include="UnitTest\Models\UserRoleEntity.cs" />
     <Compile Include="UnitTest\UCustom01.cs" />
+    <Compile Include="UnitTest\UCustom09.cs" />
     <Compile Include="UnitTest\UCustom011.cs" />
     <Compile Include="UnitTest\UCustom02.cs" />
     <Compile Include="UnitTest\UCustom03.cs" />

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

@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UCustom09.Init();
             UCustom011.Init();
             UCustom010.Init();
             UCustom08.Init();

Src/Asp.Net/SqlServerTest/UnitTest/UCustom09.cs

@@ -0,0 +1,31 @@
+using OrmTest.UnitTest.Models;
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    public class UCustom09
+    {
+        public static void Init()
+        {
+            var db = NewUnitTest.Db;
+            var list=db.Queryable<Order>()
+               .GroupBy(x => new { CreateTime = x.CreateTime.ToString("yyyy-MM"),x.Name })
+                .Select(x => new { CreateTime =  x.CreateTime.ToString("yyyy-MM") }).ToList();
+        }
+        public class Unitasfa1sadfa
+        {
+            [SugarColumn(IsPrimaryKey = true)]
+            public Guid Id { get; set; }
+            [SugarColumn(IsNullable = true)]
+            public bool ItemId { get; set; }
+ 
+        }
+
+     
+    }
+}