diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/Curd/MySqlSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/Curd/MySqlSelectTest.cs
index 6a768543..5b67eff0 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/Curd/MySqlSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/Curd/MySqlSelectTest.cs
@@ -821,7 +821,6 @@ namespace FreeSql.Tests.MySqlConnector
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist1 = select
@@ -830,7 +829,14 @@ namespace FreeSql.Tests.MySqlConnector
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -842,7 +848,6 @@ namespace FreeSql.Tests.MySqlConnector
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist2 = select
@@ -853,7 +858,16 @@ namespace FreeSql.Tests.MySqlConnector
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -863,7 +877,6 @@ namespace FreeSql.Tests.MySqlConnector
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid),
                     sum3 = b.Sum(b.Value.Type.Parent.Id)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/Curd/DamengSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/Curd/DamengSelectTest.cs
index 2a444d8e..ea7b538e 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/Curd/DamengSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/Curd/DamengSelectTest.cs
@@ -749,7 +749,6 @@ namespace FreeSql.Tests.Odbc.Dameng
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist1 = select
@@ -760,6 +759,14 @@ namespace FreeSql.Tests.Odbc.Dameng
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -780,6 +787,16 @@ namespace FreeSql.Tests.Odbc.Dameng
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql3 = select
                 .GroupBy(a => a.Title)
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcSelectTest.cs
index bd446fcf..c0a0a23e 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcSelectTest.cs
@@ -749,6 +749,14 @@ namespace FreeSql.Tests.Odbc.Default
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -767,6 +775,16 @@ namespace FreeSql.Tests.Odbc.Default
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlSelectTest.cs
index 67225bac..d72847b8 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlSelectTest.cs
@@ -832,7 +832,6 @@ namespace FreeSql.Tests.Odbc.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist1 = select
@@ -841,7 +840,14 @@ namespace FreeSql.Tests.Odbc.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -853,7 +859,6 @@ namespace FreeSql.Tests.Odbc.MySql
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist2 = select
@@ -864,7 +869,16 @@ namespace FreeSql.Tests.Odbc.MySql
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -874,7 +888,6 @@ namespace FreeSql.Tests.Odbc.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid),
                     sum3 = b.Sum(b.Value.Type.Parent.Id)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/Curd/OracleSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/Curd/OracleSelectTest.cs
index 86e20010..e97f991c 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/Curd/OracleSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/Curd/OracleSelectTest.cs
@@ -759,6 +759,14 @@ namespace FreeSql.Tests.Odbc.Oracle
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -777,6 +785,16 @@ namespace FreeSql.Tests.Odbc.Oracle
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLSelectTest.cs
index 99be779b..3f9b79cf 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLSelectTest.cs
@@ -819,6 +819,14 @@ namespace FreeSql.Tests.Odbc.PostgreSQL
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -837,6 +845,16 @@ namespace FreeSql.Tests.Odbc.PostgreSQL
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/Curd/SqlServerSelectTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/Curd/SqlServerSelectTest.cs
index f1ebb323..701c91a7 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/Curd/SqlServerSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/Curd/SqlServerSelectTest.cs
@@ -714,6 +714,14 @@ namespace FreeSql.Tests.Odbc.SqlServer
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -732,6 +740,16 @@ namespace FreeSql.Tests.Odbc.SqlServer
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/MsAccess/Curd/MsAccessSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/MsAccess/Curd/MsAccessSelectTest.cs
index 69a32587..7bb03da1 100644
--- a/FreeSql.Tests/FreeSql.Tests/MsAccess/Curd/MsAccessSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/MsAccess/Curd/MsAccessSelectTest.cs
@@ -750,6 +750,14 @@ namespace FreeSql.Tests.MsAccess
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -768,6 +776,16 @@ namespace FreeSql.Tests.MsAccess
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs
index 054e726c..60f05168 100644
--- a/FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs
@@ -863,7 +863,6 @@ namespace FreeSql.Tests.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist1 = select
@@ -872,7 +871,14 @@ namespace FreeSql.Tests.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -884,7 +890,6 @@ namespace FreeSql.Tests.MySql
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist2 = select
@@ -895,7 +900,16 @@ namespace FreeSql.Tests.MySql
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -905,7 +919,6 @@ namespace FreeSql.Tests.MySql
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid),
                     sum3 = b.Sum(b.Value.Type.Parent.Id)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/Oracle/Curd/OracleSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/Oracle/Curd/OracleSelectTest.cs
index b15f3539..26aacc73 100644
--- a/FreeSql.Tests/FreeSql.Tests/Oracle/Curd/OracleSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/Oracle/Curd/OracleSelectTest.cs
@@ -759,6 +759,14 @@ namespace FreeSql.Tests.Oracle
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -777,6 +785,16 @@ namespace FreeSql.Tests.Oracle
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLSelectTest.cs
index 28f04780..878c0150 100644
--- a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLSelectTest.cs
@@ -836,6 +836,14 @@ namespace FreeSql.Tests.PostgreSQL
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -854,6 +862,16 @@ namespace FreeSql.Tests.PostgreSQL
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerSelectTest.cs
index d8d36c82..6625e85a 100644
--- a/FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerSelectTest.cs
@@ -763,6 +763,14 @@ namespace FreeSql.Tests.SqlServer
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
 
             var aggsql2 = select
                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
@@ -781,6 +789,16 @@ namespace FreeSql.Tests.SqlServer
                     b.Key.Title,
                     b.Key.yyyy,
 
+                    cou = b.Count(),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
                     cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/Sqlite/Curd/SqliteSelectTest.cs b/FreeSql.Tests/FreeSql.Tests/Sqlite/Curd/SqliteSelectTest.cs
index 667f7596..49f7cdb9 100644
--- a/FreeSql.Tests/FreeSql.Tests/Sqlite/Curd/SqliteSelectTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/Sqlite/Curd/SqliteSelectTest.cs
@@ -701,7 +701,6 @@ namespace FreeSql.Tests.Sqlite
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist1 = select
@@ -710,7 +709,14 @@ namespace FreeSql.Tests.Sqlite
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist11 = select
+                .GroupBy(a => a.Title)
+                .ToDictionary(b => new
+                {
+                    b.Key,
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -722,7 +728,6 @@ namespace FreeSql.Tests.Sqlite
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
             var aggtolist2 = select
@@ -733,7 +738,16 @@ namespace FreeSql.Tests.Sqlite
                     b.Key.yyyy,
 
                     cou = b.Count(),
-                    sum = b.Sum(b.Key.yyyy),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                });
+            var aggtolist22 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
@@ -743,7 +757,6 @@ namespace FreeSql.Tests.Sqlite
                 {
                     b.Key,
                     cou = b.Count(),
-                    sum = b.Sum(b.Key),
                     sum2 = b.Sum(b.Value.TypeGuid),
                     sum3 = b.Sum(b.Value.Type.Parent.Id)
                 });
diff --git a/FreeSql.Tests/FreeSql.Tests/UnitTest1.cs b/FreeSql.Tests/FreeSql.Tests/UnitTest1.cs
index ddd934e8..d300dc9c 100644
--- a/FreeSql.Tests/FreeSql.Tests/UnitTest1.cs
+++ b/FreeSql.Tests/FreeSql.Tests/UnitTest1.cs
@@ -962,6 +962,29 @@ namespace FreeSql.Tests
                     sum2 = b.Sum(b.Value.TypeGuid)
                 });
 
+            var aggtolist21 = select
+                .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                .ToDictionary(b => new
+                {
+                    b.Key.Title,
+                    b.Key.yyyy,
+
+                    cou = b.Count(),
+                    sum = b.Sum(b.Key.yyyy),
+                    sum2 = b.Sum(b.Value.TypeGuid)
+                }); 
+            var aggtolist22 = select
+                 .GroupBy(a => new { a.Title, yyyy = string.Concat(a.CreateTime.Year, '-', a.CreateTime.Month) })
+                 .ToDictionaryAsync(b => new
+                 {
+                     b.Key.Title,
+                     b.Key.yyyy,
+
+                     cou = b.Count(),
+                     sum = b.Sum(b.Key.yyyy),
+                     sum2 = b.Sum(b.Value.TypeGuid)
+                 }).Result;
+
             var aggsql3 = select
                 .GroupBy(a => a.Title)
                 .ToSql(b => new
diff --git a/FreeSql/FreeSql.xml b/FreeSql/FreeSql.xml
index e808373b..83ccee42 100644
--- a/FreeSql/FreeSql.xml
+++ b/FreeSql/FreeSql.xml
@@ -2309,6 +2309,137 @@
             <param name="parms"></param>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{System.Data.Common.DbDataReader,System.Threading.Tasks.Task},System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            查询，若使用读写分离，查询【从库】条件cmdText.StartsWith("SELECT ")，否则查询【主库】
+            </summary>
+            <param name="readerHander"></param>
+            <param name="cmdType"></param>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{System.Data.Common.DbDataReader,System.Threading.Tasks.Task},System.String,System.Object)">
+            <summary>
+            查询，ExecuteReaderAsync(dr => {}, "select * from user where age > ?age", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            查询
+            </summary>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.String,System.Object)">
+            <summary>
+            查询，ExecuteArrayAsync("select * from user where age > ?age", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            查询
+            </summary>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.String,System.Object)">
+            <summary>
+            查询，ExecuteDataSetAsync("select * from user where age > ?age; select 2", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            查询
+            </summary>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.String,System.Object)">
+            <summary>
+            查询，ExecuteDataTableAsync("select * from user where age > ?age", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            在【主库】执行
+            </summary>
+            <param name="cmdType"></param>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.String,System.Object)">
+            <summary>
+            在【主库】执行，ExecuteNonQueryAsync("delete from user where age > ?age", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            在【主库】执行
+            </summary>
+            <param name="cmdType"></param>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+        </member>
+        <member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.String,System.Object)">
+            <summary>
+            在【主库】执行，ExecuteScalarAsync("select 1 from user where age > ?age", new { age = 25 })
+            </summary>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.QueryAsync``1(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > ?age", new SqlParameter { ParameterName = "age", Value = 25 })
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="cmdType"></param>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.QueryAsync``1(System.String,System.Object)">
+            <summary>
+            执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > ?age", new { age = 25 })
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.QueryAsync``2(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
+            <summary>
+            执行SQL返回对象集合，Query&lt;User&gt;("select * from user where age > ?age; select * from address", new SqlParameter { ParameterName = "age", Value = 25 })
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="cmdType"></param>
+            <param name="cmdText"></param>
+            <param name="cmdParms"></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IAdo.QueryAsync``2(System.String,System.Object)">
+            <summary>
+            执行SQL返回对象集合，Query&lt;User&gt;("select * from user where age > ?age; select * from address", new { age = 25 })
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="cmdText"></param>
+            <param name="parms"></param>
+            <returns></returns>
+        </member>
         <member name="E:FreeSql.IAop.ParseExpression">
             <summary>
             可自定义解析表达式
@@ -2829,6 +2960,12 @@
             <param name="timeout">超时</param>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.Internal.ObjectPool.IObjectPool`1.GetAsync">
+            <summary>
+            获取资源
+            </summary>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.Internal.ObjectPool.IObjectPool`1.Return(FreeSql.Internal.ObjectPool.Object{`0},System.Boolean)">
             <summary>
             使用完毕后，归还资源
@@ -2899,6 +3036,12 @@
             </summary>
             <param name="obj">资源对象</param>
         </member>
+        <member name="M:FreeSql.Internal.ObjectPool.IPolicy`1.OnGetAsync(FreeSql.Internal.ObjectPool.Object{`0})">
+            <summary>
+            从对象池获取对象成功的时候触发，通过该方法统计或初始化对象
+            </summary>
+            <param name="obj">资源对象</param>
+        </member>
         <member name="M:FreeSql.Internal.ObjectPool.IPolicy`1.OnReturn(FreeSql.Internal.ObjectPool.Object{`0})">
             <summary>
             归还对象给对象池的时候触发
@@ -3531,167 +3674,4 @@
             </summary>
         </member>
     </members>
-</doc>
-           <returns></returns>
-        </member>
-        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Or``5(System.Linq.Expressions.Expression{System.Func{``0,``1,``2,``3,``4,System.Boolean}},System.Linq.Expressions.Expression{System.Func{``0,``1,``2,``3,``4,System.Boolean}})">
-            <summary>
-            使用 or 拼接两个 lambda 表达式
-            </summary>
-            <returns></returns>
-        </member>
-        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Or``5(System.Linq.Expressions.Expression{System.Func{``0,``1,``2,``3,``4,System.Boolean}},System.Boolean,System.Linq.Expressions.Expression{System.Func{``0,``1,``2,``3,``4,System.Boolean}})">
-            <summary>
-            使用 or 拼接两个 lambda 表达式
-            </summary>
-            <param name="exp1"></param>
-            <param name="condition">true 时生效</param>
-            <param name="exp2"></param>
-            <returns></returns>
-        </member>
-        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Not``5(System.Linq.Expressions.Expression{System.Func{``0,``1,``2,``3,``4,System.Boolean}},System.Boolean)">
-            <summary>
-            将 lambda 表达式取反
-            </summary>
-            <param name="exp"></param>
-            <param name="condition">true 时生效</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeUtil.NewMongodbId">
-            <summary>
-            生成类似Mongodb的ObjectId有序、不重复Guid
-            </summary>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Insert``1">
-            <summary>
-            插入数据
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Insert``1(``0)">
-            <summary>
-            插入数据，传入实体
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="source"></param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Insert``1(``0[])">
-            <summary>
-            插入数据，传入实体数组
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="source"></param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Insert``1(System.Collections.Generic.List{``0})">
-            <summary>
-            插入数据，传入实体集合
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="source"></param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Insert``1(System.Collections.Generic.IEnumerable{``0})">
-            <summary>
-            插入数据，传入实体集合
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="source"></param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Update``1">
-            <summary>
-            修改数据
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Update``1(System.Object)">
-            <summary>
-            修改数据，传入动态对象如：主键值 | new[]{主键值1,主键值2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="dywhere">主键值、主键值集合、实体、实体集合、匿名对象、匿名对象集合</param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Select``1">
-            <summary>
-            查询数据
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Select``1(System.Object)">
-            <summary>
-            查询数据，传入动态对象如：主键值 | new[]{主键值1,主键值2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="dywhere">主键值、主键值集合、实体、实体集合、匿名对象、匿名对象集合</param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Delete``1">
-            <summary>
-            删除数据
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Delete``1(System.Object)">
-            <summary>
-            删除数据，传入动态对象如：主键值 | new[]{主键值1,主键值2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
-            </summary>
-            <typeparam name="T1"></typeparam>
-            <param name="dywhere">主键值、主键值集合、实体、实体集合、匿名对象、匿名对象集合</param>
-            <returns></returns>
-        </member>
-        <member name="M:IFreeSql.Transaction(System.Action)">
-            <summary>
-            开启事务（不支持异步），60秒未执行完成（可能）被其他线程事务自动提交
-            </summary>
-            <param name="handler">事务体 () => {}</param>
-        </member>
-        <member name="M:IFreeSql.Transaction(System.TimeSpan,System.Action)">
-            <summary>
-            开启事务（不支持异步）
-            </summary>
-            <param name="timeout">超时，未执行完成（可能）被其他线程事务自动提交</param>
-            <param name="handler">事务体 () => {}</param>
-        </member>
-        <member name="M:IFreeSql.Transaction(System.Data.IsolationLevel,System.TimeSpan,System.Action)">
-            <summary>
-            开启事务（不支持异步）
-            </summary>
-            <param name="isolationLevel"></param>
-            <param name="handler">事务体 () => {}</param>
-            <param name="timeout">超时，未执行完成（可能）被其他线程事务自动提交</param>
-        </member>
-        <member name="P:IFreeSql.Ado">
-            <summary>
-            数据库访问对象
-            </summary>
-        </member>
-        <member name="P:IFreeSql.Aop">
-            <summary>
-            所有拦截方法都在这里
-            </summary>
-        </member>
-        <member name="P:IFreeSql.CodeFirst">
-            <summary>
-            CodeFirst 模式开发相关方法
-            </summary>
-        </member>
-        <member name="P:IFreeSql.DbFirst">
-            <summary>
-            DbFirst 模式开发相关方法
-            </summary>
-        </member>
-        <member name="P:IFreeSql.GlobalFilter">
-            <summary>
-            全局过滤设置，可默认附加为 Select/Update/Delete 条件
-            </summary>
-        </member>
-    </members>
 </doc>
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect0.cs b/FreeSql/Interface/Curd/ISelect/ISelect0.cs
index 80a3ca55..ca52d7c2 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect0.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect0.cs
@@ -15,7 +15,7 @@ namespace FreeSql
 #else
         Task<DataTable> ToDataTableAsync(string field = null);
         Task<Dictionary<TKey, T1>> ToDictionaryAsync<TKey>(Func<T1, TKey> keySelector);
-        Task<Dictionary<TKey, TValue>> ToDictionaryAsync<TKey, TValue>(Func<T1, TKey> keySelector, Func<T1, TValue> valueSelector);
+        Task<Dictionary<TKey, TElement>> ToDictionaryAsync<TKey, TElement>(Func<T1, TKey> keySelector, Func<T1, TElement> elementSelector);
         Task<List<T1>> ToListAsync(bool includeNestedMembers = false);
         Task<List<TTuple>> ToListAsync<TTuple>(string field);
 
@@ -60,7 +60,7 @@ namespace FreeSql
         /// <param name="keySelector"></param>
         /// <returns></returns>
         Dictionary<TKey, T1> ToDictionary<TKey>(Func<T1, TKey> keySelector);
-        Dictionary<TKey, TValue> ToDictionary<TKey, TValue>(Func<T1, TKey> keySelector, Func<T1, TValue> valueSelector);
+        Dictionary<TKey, TElement> ToDictionary<TKey, TElement>(Func<T1, TKey> keySelector, Func<T1, TElement> elementSelector);
         /// <summary>
         /// 执行SQL查询，返回 T1 实体所有字段的记录，记录不存在时返回 Count 为 0 的列表<para></para>
         /// 注意：<para></para>
diff --git a/FreeSql/Interface/Curd/ISelect/ISelectGrouping.cs b/FreeSql/Interface/Curd/ISelect/ISelectGrouping.cs
index 9a8cf6fc..7e73a743 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelectGrouping.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelectGrouping.cs
@@ -13,6 +13,7 @@ namespace FreeSql
 #else
         Task<long> CountAsync();
         Task<List<TReturn>> ToListAsync<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select);
+        Task<Dictionary<TKey, TElement>> ToDictionaryAsync<TElement>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TElement>> elementSelector);
 #endif
 
         /// <summary>
@@ -43,6 +44,7 @@ namespace FreeSql
         /// <param name="select">选择列</param>
         /// <returns></returns>
         List<TReturn> ToList<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select);
+        Dictionary<TKey, TElement> ToDictionary<TElement>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TElement>> elementSelector);
 
         /// <summary>
         /// 【linq to sql】专用方法，不建议直接使用
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
index 5f3a6a88..950b1383 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
@@ -480,23 +480,23 @@ namespace FreeSql.Internal.CommonProvider
         }
         #endregion
         public Dictionary<TKey, T1> ToDictionary<TKey>(Func<T1, TKey> keySelector) => ToDictionary(keySelector, a => a);
-        public Dictionary<TKey, TValue> ToDictionary<TKey, TValue>(Func<T1, TKey> keySelector, Func<T1, TValue> valueSelector)
+        public Dictionary<TKey, TElement> ToDictionary<TKey, TElement>(Func<T1, TKey> keySelector, Func<T1, TElement> elementSelector)
         {
             if (keySelector == null) throw new ArgumentNullException(nameof(keySelector));
-            if (valueSelector == null) throw new ArgumentNullException(nameof(valueSelector));
+            if (elementSelector == null) throw new ArgumentNullException(nameof(elementSelector));
             var af = this.GetAllFieldExpressionTreeLevel2();
             var sql = this.ToSql(af.Field);
             var dbParms = _params.ToArray();
             var before = new Aop.CurdBeforeEventArgs(_tables[0].Table.Type, _tables[0].Table, Aop.CurdType.Select, sql, dbParms);
             _orm.Aop.CurdBeforeHandler?.Invoke(this, before);
-            var ret = new Dictionary<TKey, TValue>();
+            var ret = new Dictionary<TKey, TElement>();
             Exception exception = null;
             try
             {
                 _orm.Ado.ExecuteReader(_connection, _transaction, dr =>
                 {
                     var item = af.Read(_orm, dr);
-                    ret.Add(keySelector(item), valueSelector(item));
+                    ret.Add(keySelector(item), elementSelector(item));
                 }, CommandType.Text, sql, dbParms);
             }
             catch (Exception ex)
@@ -509,7 +509,7 @@ namespace FreeSql.Internal.CommonProvider
                 var after = new Aop.CurdAfterEventArgs(before, exception, ret);
                 _orm.Aop.CurdAfterHandler?.Invoke(this, after);
             }
-            if (typeof(TValue) == typeof(T1)) _trackToList?.Invoke(ret.Values);
+            if (typeof(TElement) == typeof(T1)) _trackToList?.Invoke(ret.Values);
             return ret;
         }
         public virtual List<T1> ToList(bool includeNestedMembers = false)
@@ -1088,9 +1088,10 @@ namespace FreeSql.Internal.CommonProvider
             var field = new StringBuilder();
             var index = -10000; //临时规则，不返回 as1
 
-            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, columns, null, _whereCascadeExpression, true);
-            this.GroupBy(field.Length > 0 ? field.Remove(0, 2).ToString() : null);
-            return new SelectGroupingProvider<TKey, TValue>(_orm, this, map, _commonExpression, _tables);
+            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, columns, null, _whereCascadeExpression, false); //不走 DTO 映射
+            var sql = field.ToString();
+            this.GroupBy(sql.Length > 0 ? sql.Substring(2) : null);
+            return new SelectGroupingProvider<TKey, TValue>(_orm, this, map, sql, _commonExpression, _tables);
         }
         protected TSelect InternalJoin(Expression exp, SelectTableInfoType joinType)
         {
@@ -1146,7 +1147,7 @@ namespace FreeSql.Internal.CommonProvider
             var field = new StringBuilder();
             var index = 0;
 
-            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, _whereCascadeExpression, true);
+            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, _whereCascadeExpression, false); //不走 DTO 映射
             return this.ToListMapReader<TReturn>(new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null)).FirstOrDefault();
         }
 
@@ -1285,23 +1286,23 @@ namespace FreeSql.Internal.CommonProvider
         }
 
         public Task<Dictionary<TKey, T1>> ToDictionaryAsync<TKey>(Func<T1, TKey> keySelector) => ToDictionaryAsync(keySelector, a => a);
-        async public Task<Dictionary<TKey, TValue>> ToDictionaryAsync<TKey, TValue>(Func<T1, TKey> keySelector, Func<T1, TValue> valueSelector)
+        async public Task<Dictionary<TKey, TElement>> ToDictionaryAsync<TKey, TElement>(Func<T1, TKey> keySelector, Func<T1, TElement> elementSelector)
         {
             if (keySelector == null) throw new ArgumentNullException(nameof(keySelector));
-            if (valueSelector == null) throw new ArgumentNullException(nameof(valueSelector));
+            if (elementSelector == null) throw new ArgumentNullException(nameof(elementSelector));
             var af = this.GetAllFieldExpressionTreeLevel2();
             var sql = this.ToSql(af.Field);
             var dbParms = _params.ToArray();
             var before = new Aop.CurdBeforeEventArgs(_tables[0].Table.Type, _tables[0].Table, Aop.CurdType.Select, sql, dbParms);
             _orm.Aop.CurdBeforeHandler?.Invoke(this, before);
-            var ret = new Dictionary<TKey, TValue>();
+            var ret = new Dictionary<TKey, TElement>();
             Exception exception = null;
             try
             {
                 await _orm.Ado.ExecuteReaderAsync(_connection, _transaction, dr =>
                 {
                     var item = af.Read(_orm, dr);
-                    ret.Add(keySelector(item), valueSelector(item));
+                    ret.Add(keySelector(item), elementSelector(item));
                     return Task.FromResult(false);
                 }, CommandType.Text, sql, dbParms);
             }
@@ -1315,7 +1316,7 @@ namespace FreeSql.Internal.CommonProvider
                 var after = new Aop.CurdAfterEventArgs(before, exception, ret);
                 _orm.Aop.CurdAfterHandler?.Invoke(this, after);
             }
-            if (typeof(TValue) == typeof(T1)) _trackToList?.Invoke(ret.Values);
+            if (typeof(TElement) == typeof(T1)) _trackToList?.Invoke(ret.Values);
             return ret;
         }
         public virtual Task<List<T1>> ToListAsync(bool includeNestedMembers = false)
@@ -1426,7 +1427,7 @@ namespace FreeSql.Internal.CommonProvider
             var field = new StringBuilder();
             var index = 0;
 
-            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, _whereCascadeExpression, true);
+            _commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, _whereCascadeExpression, false); //不走 DTO 映射
             return (await this.ToListMapReaderAsync<TReturn>(new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null))).FirstOrDefault();
         }
 #endif
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/SelectGroupingProvider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/SelectGroupingProvider.cs
index 46c642d8..8c2474c4 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/SelectGroupingProvider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/SelectGroupingProvider.cs
@@ -14,13 +14,15 @@ namespace FreeSql.Internal.CommonProvider
         internal IFreeSql _orm;
         internal object _select;
         internal ReadAnonymousTypeInfo _map;
+        internal string _field;
         internal CommonExpression _comonExp;
         internal List<SelectTableInfo> _tables;
-        public SelectGroupingProvider(IFreeSql orm, object select, ReadAnonymousTypeInfo map, CommonExpression comonExp, List<SelectTableInfo> tables)
+        public SelectGroupingProvider(IFreeSql orm, object select, ReadAnonymousTypeInfo map, string field, CommonExpression comonExp, List<SelectTableInfo> tables)
         {
             _orm = orm;
             _select = select;
             _map = map;
+            _field = field;
             _comonExp = comonExp;
             _tables = tables;
         }
@@ -107,20 +109,33 @@ namespace FreeSql.Internal.CommonProvider
             return this;
         }
 
+        public List<TReturn> Select<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select) => ToList(select);
         public List<TReturn> ToList<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select)
         {
             var map = new ReadAnonymousTypeInfo();
             var field = new StringBuilder();
             var index = 0;
 
-            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, true);
+            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, false);
             if (map.Childs.Any() == false && map.MapType == null) map.MapType = typeof(TReturn);
             var method = _select.GetType().GetMethod("ToListMapReader", BindingFlags.Instance | BindingFlags.NonPublic);
             method = method.MakeGenericMethod(typeof(TReturn));
             return method.Invoke(_select, new object[] { new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null) }) as List<TReturn>;
         }
-        
-        public List<TReturn> Select<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select) => ToList(select);
+        public Dictionary<TKey, TElement> ToDictionary<TElement>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TElement>> elementSelector)
+        {
+            var map = new ReadAnonymousTypeInfo();
+            var field = new StringBuilder();
+            var index = 0;
+
+            _comonExp.ReadAnonymousField(null, field, map, ref index, elementSelector, getSelectGroupingMapString, null, false);
+            if (map.Childs.Any() == false && map.MapType == null) map.MapType = typeof(TElement);
+            var method = _select.GetType().GetMethod("ToListMapReaderPrivate", BindingFlags.Instance | BindingFlags.NonPublic);
+            method = method.MakeGenericMethod(typeof(TElement));
+            var otherAf = new ReadAnonymousTypeOtherInfo(_field, _map, new List<object>());
+            var values = method.Invoke(_select, new object[] { new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null), new[] { otherAf } }) as List<TElement>;
+            return otherAf.retlist.Select((a, b) => new KeyValuePair<TKey, TElement>((TKey)a, values[b])).ToDictionary(a => a.Key, a => a.Value);
+        }
 
         public string ToSql<TReturn>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TReturn>> select, FieldAliasOptions fieldAlias = FieldAliasOptions.AsIndex)
         {
@@ -128,7 +143,7 @@ namespace FreeSql.Internal.CommonProvider
             var field = new StringBuilder();
             var index = fieldAlias == FieldAliasOptions.AsProperty ? CommonExpression.ReadAnonymousFieldAsCsName : 0;
 
-            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, true);
+            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, false);
             var method = _select.GetType().GetMethod("ToSql", new[] { typeof(string) });
             return method.Invoke(_select, new object[] { field.Length > 0 ? field.Remove(0, 2).ToString() : null }) as string;
         }
@@ -181,12 +196,26 @@ namespace FreeSql.Internal.CommonProvider
             var field = new StringBuilder();
             var index = 0;
 
-            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, true);
+            _comonExp.ReadAnonymousField(null, field, map, ref index, select, getSelectGroupingMapString, null, false);
             if (map.Childs.Any() == false && map.MapType == null) map.MapType = typeof(TReturn);
             var method = _select.GetType().GetMethod("ToListMapReaderAsync", BindingFlags.Instance | BindingFlags.NonPublic);
             method = method.MakeGenericMethod(typeof(TReturn));
             return method.Invoke(_select, new object[] { new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null) }) as Task<List<TReturn>>;
         }
+        async public Task<Dictionary<TKey, TElement>> ToDictionaryAsync<TElement>(Expression<Func<ISelectGroupingAggregate<TKey, TValue>, TElement>> elementSelector)
+        {
+            var map = new ReadAnonymousTypeInfo();
+            var field = new StringBuilder();
+            var index = 0;
+
+            _comonExp.ReadAnonymousField(null, field, map, ref index, elementSelector, getSelectGroupingMapString, null, false);
+            if (map.Childs.Any() == false && map.MapType == null) map.MapType = typeof(TElement);
+            var method = _select.GetType().GetMethod("ToListMapReaderPrivateAsync", BindingFlags.Instance | BindingFlags.NonPublic);
+            method = method.MakeGenericMethod(typeof(TElement));
+            var otherAf = new ReadAnonymousTypeOtherInfo(_field, _map, new List<object>());
+            var values = await (method.Invoke(_select, new object[] { new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null), new[] { otherAf } }) as Task<List<TElement>>);
+            return otherAf.retlist.Select((a, b) => new KeyValuePair<TKey, TElement>((TKey)a, values[b])).ToDictionary(a => a.Key, a => a.Value);
+        }
 #endif
     }
 }