diff --git a/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs b/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
index c29784c3d..7959f3f46 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
@@ -384,6 +384,10 @@ namespace SqlSugar
             {
                 value = columnInfo.DefaultValue;
             }
+            else if (columnInfo.DataType.ObjToString().ToLower().IsIn("int","int4","bigint","int8","int2")&& columnInfo.DefaultValue.IsInt()) 
+            {
+                value = columnInfo.DefaultValue;
+            }
             return value;
         }
         public virtual bool UpdateColumn(string tableName, DbColumnInfo column)
diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index a25d2bfe4..2d2c3abd3 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -1341,7 +1341,7 @@ namespace SqlSugar
             return this;
         }
         public virtual ISugarQueryable<T> GroupBy(Expression<Func<T, object>> expression)
-        { 
+        {
             _GroupBy(expression);
             return this;
         }
diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider06-10.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider06-10.cs
index 4b08a6de1..aee971089 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider06-10.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider06-10.cs
@@ -3034,6 +3034,11 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9> Distinct()
+        {
+            QueryBuilder.IsDistinct = true;
+            return this;
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9> Take(int num)
         {
             QueryBuilder.Take = num;
@@ -3832,6 +3837,11 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10> Distinct()
+        {
+            QueryBuilder.IsDistinct = true;
+            return this;
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10> Take(int num)
         {
             QueryBuilder.Take = num;
diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider11-12.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider11-12.cs
index 980d4b3d8..08dfe1385 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider11-12.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider11-12.cs
@@ -644,6 +644,11 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9,T10,T11> Distinct()
+        {
+            QueryBuilder.IsDistinct = true;
+            return this;
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Take(int num)
         {
             QueryBuilder.Take = num;
@@ -1290,6 +1295,11 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,T12> Distinct()
+        {
+            QueryBuilder.IsDistinct = true;
+            return this;
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Take(int num)
         {
             QueryBuilder.Take = num;
diff --git a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
index b0221f41b..8596aa1a6 100644
--- a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
+++ b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
@@ -1460,6 +1460,7 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8,T9> Distinct();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9> Take(int num);
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9> Clone();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9> AS<AsT>(string tableName);
@@ -1607,6 +1608,7 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9,T10> Distinct();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9,T10> Take(int num);
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10> Clone();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10> AS<AsT>(string tableName);
@@ -1747,6 +1749,7 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10,T11> Distinct();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9,T10,T11> Take(int num);
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Clone();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> AS<AsT>(string tableName);
@@ -1879,6 +1882,7 @@ namespace SqlSugar
         #endregion
 
         #region Other
+        new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,T12> Distinct();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Take(int num);
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Clone();
         new ISugarQueryable<T, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> AS<AsT>(string tableName);