diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
index 9a920521c..bab22ce28 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
@@ -120,7 +120,7 @@ namespace SqlSugar
         public static TResult AggregateMax<TResult>(TResult thisValue) { throw new NotSupportedException("Can only be used in expressions"); }
         public static int AggregateCount<TResult>(TResult thisValue) { throw new NotSupportedException("Can only be used in expressions"); }
         public static int AggregateDistinctCount<TResult>(TResult thisValue) { throw new NotSupportedException("Can only be used in expressions"); }
-        public static TResult MappingColumn<TResult>(TResult oldColumnName,string newColumnName) { throw new NotSupportedException("Can only be used in expressions"); }
+        public static TResult MappingColumn<TResult>(TResult type,string newColumnName) { throw new NotSupportedException("Can only be used in expressions"); }
         /// <summary>
         ///Example: new NewT(){name=SqlFunc.GetSelfAndAutoFill(it)}  Generated SQL   it.*
         /// </summary>
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
index 7d793e0a1..bf683519a 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
@@ -652,7 +652,7 @@ namespace SqlSugar
                     case "MappingColumn":
                         var mappingColumnResult = this.Context.DbMehtods.MappingColumn(model);
                         var isValid = model.Args[0].IsMember && model.Args[1].IsMember == false;
-                        Check.Exception(!isValid, "SqlFunc.MappingColumn parameters error, The property name on the left, string value on the right");
+                        //Check.Exception(!isValid, "SqlFunc.MappingColumn parameters error, The property name on the left, string value on the right");
                         this.Context.Parameters.RemoveAll(it => it.ParameterName == model.Args[1].MemberName.ObjToString());
                         return mappingColumnResult;
                     case "IsNull":