diff --git a/Examples/base_entity/Program.cs b/Examples/base_entity/Program.cs
index 63b9daa1..990204a6 100644
--- a/Examples/base_entity/Program.cs
+++ b/Examples/base_entity/Program.cs
@@ -584,6 +584,11 @@ namespace base_entity
                 .OrderBy((a,b) => a.createtime)
                 .ToSql();
 
+
+            var table = fsql.CodeFirst.GetTableByEntity(typeof(AsTableLog));
+            //table.SetAsTable(null, table.ColumnsByCs[nameof(AsTableLog.createtime)]);
+
+
             var testitems = new[]
             {
                 new AsTableLog{ msg = "msg01", createtime = DateTime.Parse("2022-1-1 13:00:11"), click = 1 },
diff --git a/FreeSql/Internal/Model/TableInfo.cs b/FreeSql/Internal/Model/TableInfo.cs
index e4b0a30f..f06fe7d2 100644
--- a/FreeSql/Internal/Model/TableInfo.cs
+++ b/FreeSql/Internal/Model/TableInfo.cs
@@ -32,6 +32,12 @@ namespace FreeSql.Internal.Model
         public ColumnInfo AsTableColumn { get; internal set; }
         public ColumnInfo VersionColumn { get; set; }
 
+        public void SetAsTable(IAsTable astable, ColumnInfo column)
+        {
+            AsTableImpl = astable;
+            AsTableColumn = column;
+        }
+
         ConcurrentDictionary<string, TableRef> _refs { get; } = new ConcurrentDictionary<string, TableRef>(StringComparer.CurrentCultureIgnoreCase);
 
         internal void AddOrUpdateTableRef(string propertyName, TableRef tbref)