diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Subquerable.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Subquerable.cs
index af1b8283e..e5d093d57 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Subquerable.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Subquerable.cs
@@ -195,6 +195,10 @@ namespace SqlSugar
         {
             return default(TResult);
         }
+        public TResult First<TResult>(Func<T, TResult> selector, bool isAutoDto) where TResult : class, new()
+        {
+            return default(TResult);
+        }
         public TResult First<TResult>() where TResult : class, new()
         {
             return default(TResult);
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/SubqueryableN.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/SubqueryableN.cs
index 10f672e69..e7f246728 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/SubqueryableN.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/SubqueryableN.cs
@@ -284,6 +284,10 @@ namespace SqlSugar
         {
             return null;
         }
+        public TResult First<TResult>(Func<T1, T2, T3,T4, TResult> selector, bool isAutoDto) where TResult : class, new()
+        {
+            return default(TResult);
+        }
         public TResult Max<TResult>(Func<T1, T2, T3,T4, TResult> expression)
         {
             return default(TResult);
@@ -372,6 +376,10 @@ namespace SqlSugar
         {
             return null;
         }
+        public TResult First<TResult>(Func<T1,T2,T3, TResult> selector, bool isAutoDto) where TResult : class, new()
+        {
+            return default(TResult);
+        }
         public TResult Max<TResult>(Func<T1, T2,T3, TResult> expression)
         {
             return default(TResult);
@@ -456,6 +464,10 @@ namespace SqlSugar
         {
             return null;
         }
+        public TResult First<TResult>(Func<T1,T2, TResult> selector, bool isAutoDto) where TResult : class, new()
+        {
+            return default(TResult);
+        }
         public TResult Max<TResult>(Func<T1,T2, TResult> expression)
         {
             return default(TResult);