diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
index 21ad137cd..e5244c40a 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
@@ -1,7 +1,5 @@
 using System;
-using System.Linq;
-using System.Reflection;
-using static Dm.parser.SQLProcessor;
+using System.Linq; 
 namespace SqlSugar
 {
     public class PostgreSQLExpressionContext : ExpressionContext, ILambdaExpressions