diff --git a/OrmTest/OrmTest.csproj b/OrmTest/OrmTest.csproj
index 2b0189d05..9e057de78 100644
--- a/OrmTest/OrmTest.csproj
+++ b/OrmTest/OrmTest.csproj
@@ -46,10 +46,11 @@
     <Compile Include="Config.cs" />
     <Compile Include="UnitTest\ExpressionTest\ExpTestBase.cs" />
     <Compile Include="UnitTest\ExpressionTest\Field.cs" />
-    <Compile Include="UnitTest\Query\Join.cs" />
+    <Compile Include="UnitTest\Query\JoinQuery.cs" />
     <Compile Include="UnitTest\ExpressionTest\Method.cs" />
     <Compile Include="UnitTest\ExpressionTest\Select.cs" />
-    <Compile Include="UnitTest\Query\Single.cs" />
+    <Compile Include="UnitTest\Query\SelectQuery.cs" />
+    <Compile Include="UnitTest\Query\SingleQuery.cs" />
     <Compile Include="UnitTest\ExpressionTest\Where.cs" />
     <Compile Include="Models\School.cs" />
     <Compile Include="Models\Student.cs" />
diff --git a/OrmTest/Program.cs b/OrmTest/Program.cs
index 0b5cd574a..67636495f 100644
--- a/OrmTest/Program.cs
+++ b/OrmTest/Program.cs
@@ -11,18 +11,18 @@ using System.Data.SqlClient;
 using OrmTest.UnitTest;
 namespace OrmTest
 {
-
     class Program
     {
         static void Main(string[] args)
         {
-            //Expression To Sql Unit Test
+            //Unit Test
             int eachCount = 1;
             new Field(eachCount).Init();
             new Where(eachCount).Init();
             new Method(eachCount).Init();
             new JoinQuery(eachCount).Init();
             new SingleQuery(eachCount).Init();
+            new SingleQuery(eachCount).Init();
         }
     }
 }
diff --git a/OrmTest/UnitTest/Query/JoinQuery.cs b/OrmTest/UnitTest/Query/JoinQuery.cs
new file mode 100644
index 000000000..967f08801
--- /dev/null
+++ b/OrmTest/UnitTest/Query/JoinQuery.cs
@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+using System.Linq.Expressions;
+using OrmTest.Models;
+namespace OrmTest.UnitTest
+{
+    public class JoinQuery : ExpTestBase
+    {
+        private JoinQuery() { }
+        public JoinQuery(int eachCount)
+        {
+            this.Count = eachCount;
+        }
+        internal void Init()
+        {
+            base.Begin();
+            for (int i = 0; i < base.Count; i++)
+            {
+                Q1();
+                Q2();
+            }
+            base.End("Method Test");
+        }
+
+        public void Q1()
+        {
+            using (var db = GetInstance())
+            {
+                var list = db.Queryable<Student, School>((st, sc) => new object[] {
+                          JoinType.Left,st.SchoolId==sc.Id
+                }).Where(st => st.Id > 0).Select<Student>("*").ToList();
+            }
+        }
+        public void Q2()
+        {
+            using (var db = GetInstance())
+            {
+                var list = db.Queryable<Student, School>((st, sc) => new object[] {
+                          JoinType.Left,st.SchoolId==sc.Id
+                }).Where(st=>st.Id>0).Select<Student>("*").ToList();
+            }
+        }
+
+
+        public SqlSugarClient GetInstance()
+        {
+            SqlSugarClient db = new SqlSugarClient(new SystemTablesConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer });
+            db.Database.IsEnableLogEvent = true;
+            db.Database.LogEventStarting = (sql, pars) =>
+            {
+                Console.WriteLine(sql+" "+pars);
+            };
+            return db;
+        }
+    }
+}
diff --git a/OrmTest/UnitTest/Query/Join.cs b/OrmTest/UnitTest/Query/SelectQuery.cs
similarity index 73%
rename from OrmTest/UnitTest/Query/Join.cs
rename to OrmTest/UnitTest/Query/SelectQuery.cs
index 8f3a7e522..3b42c9949 100644
--- a/OrmTest/UnitTest/Query/Join.cs
+++ b/OrmTest/UnitTest/Query/SelectQuery.cs
@@ -8,10 +8,10 @@ using System.Linq.Expressions;
 using OrmTest.Models;
 namespace OrmTest.UnitTest
 {
-    public class JoinQuery : ExpTestBase
+    public class SelectQuery : ExpTestBase
     {
-        private JoinQuery() { }
-        public JoinQuery(int eachCount)
+        private SelectQuery() { }
+        public SelectQuery(int eachCount)
         {
             this.Count = eachCount;
         }
@@ -29,13 +29,10 @@ namespace OrmTest.UnitTest
         {
             using (var db = GetInstance())
             {
-                var list = db.Queryable<Student, School>((st, sc) => new object[] {
-                          JoinType.Left,st.SchoolId==sc.Id
-                }).Where(st=>st.Id>0).ToList();
+                var list = db.Queryable<Student>().Where(st => st.Id > 0).ToList();
             }
         }
 
-
         public SqlSugarClient GetInstance()
         {
             SqlSugarClient db = new SqlSugarClient(new SystemTablesConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer });
diff --git a/OrmTest/UnitTest/Query/Single.cs b/OrmTest/UnitTest/Query/SingleQuery.cs
similarity index 100%
rename from OrmTest/UnitTest/Query/Single.cs
rename to OrmTest/UnitTest/Query/SingleQuery.cs
diff --git a/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index 348b8637e..e8aa08953 100644
--- a/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -207,12 +207,17 @@ namespace SqlSugar
         public ISugarQueryable<TResult> Select<TResult>(Expression<Func<T, TResult>> expression) where TResult : class, new()
         {
             var reval = InstanceFactory.GetQueryable<TResult>(this.Context.CurrentConnectionConfig);
+            reval.Context = this.Context;
+            reval.Pars = this.Pars;
             return reval;
         }
 
         public ISugarQueryable<TResult> Select<TResult>(string selectValue) where TResult : class, new()
         {
             var reval = InstanceFactory.GetQueryable<TResult>(this.Context.CurrentConnectionConfig);
+            reval.Context = this.Context;
+            reval.Context.SqlBuilder.LambadaQueryBuilder.SelectValue = selectValue;
+            reval.Pars = this.Pars;
             return reval;
         }