Update mongodb

Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs

@@ -14,6 +14,7 @@ namespace MongoDbTest
             QuerySingle.Init();
             QueryWhere.Init();
             QuerySelect.Init();
+            QuerySelect2.Init();
             QueryJson.Init();
             QueryLeftJoin.Init();
             QueryLeftJoin2.Init();

Src/Asp.NetCore2/MongoDbTest/UnitTest/QuerySelect2.cs

@@ -0,0 +1,54 @@
+using MongoDB.Bson;
+using MongoDB.Driver;
+using MongoDB.Driver.Linq; 
+using SqlSugar;
+using SqlSugar.MongoDb;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MongoDbTest 
+{
+    public class QuerySelect2
+    {
+        internal static void Init()
+        { 
+            var db =DbHelper.GetNewDb();
+            db.CodeFirst.InitTables<Student>();
+            db.DbMaintenance.TruncateTable<Student>();
+
+            db.Insertable(new Student() { Name = "jack", SchoolId = "1" }).ExecuteCommand();
+            db.Insertable(new Student2() { Name = "tom", Age=100 }).ExecuteCommand();
+
+            var list=db.Queryable<Student3>().ToList();
+            var first = list.First();
+            var last = list.Last();
+
+            if (first.SchoolId != "1" || first.Name != "jack"||first.Age!=0) Cases.ThrowUnitError();
+            if (last.SchoolId != null || last.Name != "tom"|| last.Age!=100) Cases.ThrowUnitError();
+        } 
+        [SqlSugar.SugarTable("UnitStudent1231sds3z1")]
+        public class Student : MongoDbBase
+        {
+            public string Name { get; set; }
+
+            public string SchoolId { get; set; }
+
+        }
+        [SqlSugar.SugarTable("UnitStudent1231sds3z1")]
+        public class Student2 : MongoDbBase
+        {
+            public string Name { get; set; }
+            public int Age { get; set; } 
+        }
+        [SqlSugar.SugarTable("UnitStudent1231sds3z1")]
+        public class Student3 : MongoDbBase
+        {
+            public string Name { get; set; }
+            public int Age { get; set; }
+            public string SchoolId { get; set; }
+        }
+    }
+}