diff --git a/.vs/SqlSugar/v14/.suo b/.vs/SqlSugar/v14/.suo
index 77cd4487a..bbba319e6 100644
Binary files a/.vs/SqlSugar/v14/.suo and b/.vs/SqlSugar/v14/.suo differ
diff --git a/OrmTest/bin/Debug/OrmTest.exe b/OrmTest/bin/Debug/OrmTest.exe
index 847d6b351..b26492bbb 100644
Binary files a/OrmTest/bin/Debug/OrmTest.exe and b/OrmTest/bin/Debug/OrmTest.exe differ
diff --git a/OrmTest/bin/Debug/OrmTest.pdb b/OrmTest/bin/Debug/OrmTest.pdb
index d51e2f7ab..a566fe9e5 100644
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diff --git a/OrmTest/bin/Debug/SqlSugar.dll b/OrmTest/bin/Debug/SqlSugar.dll
index ab197d825..e05646c2f 100644
Binary files a/OrmTest/bin/Debug/SqlSugar.dll and b/OrmTest/bin/Debug/SqlSugar.dll differ
diff --git a/OrmTest/bin/Debug/SqlSugar.pdb b/OrmTest/bin/Debug/SqlSugar.pdb
index 6cdbb95ca..6aab39ccc 100644
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diff --git a/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache b/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache
index 2693b6783..e275a6b98 100644
Binary files a/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache and b/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache differ
diff --git a/OrmTest/obj/Debug/OrmTest.exe b/OrmTest/obj/Debug/OrmTest.exe
index 847d6b351..b26492bbb 100644
Binary files a/OrmTest/obj/Debug/OrmTest.exe and b/OrmTest/obj/Debug/OrmTest.exe differ
diff --git a/OrmTest/obj/Debug/OrmTest.pdb b/OrmTest/obj/Debug/OrmTest.pdb
index d51e2f7ab..a566fe9e5 100644
Binary files a/OrmTest/obj/Debug/OrmTest.pdb and b/OrmTest/obj/Debug/OrmTest.pdb differ
diff --git a/SqlSugar/Entities/ExpressionParameter.cs b/SqlSugar/Entities/ExpressionParameter.cs
new file mode 100644
index 000000000..2d39c5c57
--- /dev/null
+++ b/SqlSugar/Entities/ExpressionParameter.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+namespace SqlSugar
+{
+    public class ExpressionParameter
+    {
+        public Expression Expression { get; set; }
+        public SqlSugarClient DbContext { get; set; }
+    }
+}
diff --git a/SqlSugar/Expressions/ExpItems/BaseResolve.cs b/SqlSugar/Expressions/ExpItems/BaseResolve.cs
index 2d776b279..48c173263 100644
--- a/SqlSugar/Expressions/ExpItems/BaseResolve.cs
+++ b/SqlSugar/Expressions/ExpItems/BaseResolve.cs
@@ -8,10 +8,13 @@ namespace SqlSugar
     public class BaseResolve
     {
         protected Expression Expression { get; set; }
+        protected Expression BaseExpression { get; set; }
         public ExpressionContext Context { get; set; }
         public string SqlWhere { get; set; }
         public bool IsFinished { get; set; }
-
+        public bool? IsLeft { get; set; }
+        public int ContentIndex { get { return this.Context.Index; } }
+        public int Index { get; set; }
         private BaseResolve()
         {
 
@@ -23,7 +26,9 @@ namespace SqlSugar
 
         public BaseResolve Start()
         {
+            this.Index++;
             this.IsFinished = false;
+            this.BaseExpression = null;
             Expression exp = this.Expression;
             if (exp is LambdaExpression)
             {
diff --git a/SqlSugar/Expressions/ExpItems/BinaryExpressionResolve.cs b/SqlSugar/Expressions/ExpItems/BinaryExpressionResolve.cs
index d2ed5c1e0..41bb6148e 100644
--- a/SqlSugar/Expressions/ExpItems/BinaryExpressionResolve.cs
+++ b/SqlSugar/Expressions/ExpItems/BinaryExpressionResolve.cs
@@ -9,6 +9,15 @@ namespace SqlSugar
     {
         public BinaryExpressionResolve(Expression exp) : base(exp)
         {
+            var expression = this.Expression as BinaryExpression;
+            base.BaseExpression = expression;
+            base.IsLeft = true;
+            base.Expression = expression.Left;
+            base.Start();
+            base.IsLeft = false;
+            base.Expression = expression.Right;
+            base.Start();
+            base.IsLeft = null;
             base.Continue();
         }
     }
diff --git a/SqlSugar/Expressions/ExpItems/MemberExpressionResolve.cs b/SqlSugar/Expressions/ExpItems/MemberExpressionResolve.cs
index 3308d1dda..2bb8c8ef8 100644
--- a/SqlSugar/Expressions/ExpItems/MemberExpressionResolve.cs
+++ b/SqlSugar/Expressions/ExpItems/MemberExpressionResolve.cs
@@ -10,7 +10,10 @@ namespace SqlSugar
     {
         public MemberExpressionResolve(Expression exp) : base(exp)
         {
-
+            var isLeft = this.IsLeft;
+            this.IsLeft = null;
+            var isSingle=base.Context.IsSingle;
+            var expression = exp as MemberExpression;
         }
     }
 }
diff --git a/SqlSugar/Expressions/ExpressionContext.cs b/SqlSugar/Expressions/ExpressionContext.cs
index b357c9b4c..e8dc7b4e2 100644
--- a/SqlSugar/Expressions/ExpressionContext.cs
+++ b/SqlSugar/Expressions/ExpressionContext.cs
@@ -8,20 +8,20 @@ namespace SqlSugar
 {
     public class ExpressionContext : ExpResolveAccessory
     {
-        private ResolveExpressType type { get; set; }
-        private Expression expression { get; set; }
-        private bool IsSingle { get { return this.type == ResolveExpressType.Single; } }
+        public ResolveExpressType Type { get; set; }
+        public Expression Expression { get; set; }
+        public bool IsSingle { get { return this.Type == ResolveExpressType.Single; } }
 
         public ExpressionContext(Expression expression, ResolveExpressType type)
         {
-            this.type = type;
-            this.expression = expression;
+            this.Type = type;
+            this.Expression = expression;
         }
 
         public string GetFiledName()
         {
             string reval = null;
-            LambdaExpression lambda = this.expression as LambdaExpression;
+            LambdaExpression lambda = this.Expression as LambdaExpression;
             var isConvet = lambda.Body.NodeType.IsIn(ExpressionType.Convert);
             var isMember = lambda.Body.NodeType.IsIn(ExpressionType.MemberAccess);
             if (!isConvet && !isMember)
@@ -56,7 +56,7 @@ namespace SqlSugar
 
         public string GetWhere()
         {
-            BaseResolve resolve = new BaseResolve(this.expression);
+            BaseResolve resolve = new BaseResolve(this.Expression);
             resolve.Context = this;
             resolve.Start();
             return resolve.SqlWhere;
@@ -75,5 +75,7 @@ namespace SqlSugar
                 base._Parameters = value;
             }
         }
+
+        public int Index { get; set; }
     }
 }
diff --git a/SqlSugar/SqlSugar.csproj b/SqlSugar/SqlSugar.csproj
index 762726e61..0ecabb369 100644
--- a/SqlSugar/SqlSugar.csproj
+++ b/SqlSugar/SqlSugar.csproj
@@ -97,6 +97,7 @@
     <Compile Include="Entities\ConnectionConfig.cs" />
     <Compile Include="Entities\DbColumnInfo.cs" />
     <Compile Include="Entities\DbTableInfo.cs" />
+    <Compile Include="Entities\ExpressionParameter.cs" />
     <Compile Include="Entities\JoinQueryInfo.cs" />
     <Compile Include="Entities\Mapping\MappingColumn.cs" />
     <Compile Include="Entities\Mapping\MappingTable.cs" />
@@ -135,9 +136,6 @@
     <Compile Include="SqlSugarAccessory.cs" />
     <Compile Include="SqlSugarClient.cs" />
   </ItemGroup>
-  <ItemGroup>
-    <WCFMetadata Include="Service References\" />
-  </ItemGroup>
   <ItemGroup>
     <Content Include="Lib\Newtonsoft.Json.dll" />
   </ItemGroup>
diff --git a/SqlSugar/bin/Debug/SqlSugar.dll b/SqlSugar/bin/Debug/SqlSugar.dll
index ab197d825..e05646c2f 100644
Binary files a/SqlSugar/bin/Debug/SqlSugar.dll and b/SqlSugar/bin/Debug/SqlSugar.dll differ
diff --git a/SqlSugar/bin/Debug/SqlSugar.pdb b/SqlSugar/bin/Debug/SqlSugar.pdb
index 6cdbb95ca..6aab39ccc 100644
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diff --git a/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt b/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
index c7414cb31..9a47395a4 100644
--- a/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
+++ b/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
@@ -3,3 +3,4 @@ F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\bin\Debug\SqlSugar.pdb
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\bin\Debug\Newtonsoft.Json.dll
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.dll
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.pdb
+F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.csprojResolveAssemblyReference.cache
diff --git a/SqlSugar/obj/Debug/SqlSugar.csprojResolveAssemblyReference.cache b/SqlSugar/obj/Debug/SqlSugar.csprojResolveAssemblyReference.cache
new file mode 100644
index 000000000..cf78a08b2
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diff --git a/SqlSugar/obj/Debug/SqlSugar.dll b/SqlSugar/obj/Debug/SqlSugar.dll
index ab197d825..e05646c2f 100644
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diff --git a/SqlSugar/obj/Debug/SqlSugar.pdb b/SqlSugar/obj/Debug/SqlSugar.pdb
index 6cdbb95ca..6aab39ccc 100644
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