diff --git a/Src/Asp.Net/SqlSugar/Abstract/EntityMaintenance/EntityMaintenance.cs b/Src/Asp.Net/SqlSugar/Abstract/EntityMaintenance/EntityMaintenance.cs
index 1c1519acb..3db043bd0 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/EntityMaintenance/EntityMaintenance.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/EntityMaintenance/EntityMaintenance.cs
@@ -309,7 +309,7 @@ namespace SqlSugar
                         column.ColumnDescription = sugarColumn.ColumnDescription;
                     }
                 }
-                if (column.ColumnDescription.IsNullOrEmpty()) column.ColumnDescription = GetPropertyAnnotation(result.Type, column.DbColumnName);
+                if (column.ColumnDescription.IsNullOrEmpty()) column.ColumnDescription = GetPropertyAnnotation(result.Type, column.PropertyName);
                 if (this.Context.MappingColumns.HasValue())
                 {
                     var golbalMappingInfo = this.Context.MappingColumns.FirstOrDefault(it => it.EntityName.Equals(result.EntityName, StringComparison.CurrentCultureIgnoreCase) && it.PropertyName == column.PropertyName);
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index dd22d3e42..164972827 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -532,13 +532,13 @@ namespace SqlSugar
                             FieldValue = value.ObjToStringNew(),
                             CSharpTypeName = column.PropertyInfo.PropertyType.Name
                         });
-                        if (this.Context.CurrentConnectionConfig.DbType == DbType.PostgreSQL) 
-                        {
-                            data.Value.FieldValueConvertFunc = it =>
-                            {
-                                return UtilMethods.ChangeType2(it, value.GetType());
-                            };
-                        }
+                        //if (this.Context.CurrentConnectionConfig.DbType == DbType.PostgreSQL) 
+                        //{
+                        //    data.Value.FieldValueConvertFunc = it =>
+                        //    {
+                        //        return UtilMethods.ChangeType2(it, value.GetType());
+                        //    };
+                        //}
                         cons.ConditionalList.Add(data);
                     }
                     if (cons.HasValue())
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/UpdateBuilder.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/UpdateBuilder.cs
index e75533e05..d59ed8765 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/UpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/UpdateBuilder.cs
@@ -159,7 +159,7 @@ namespace SqlSugar
                 DbColumnInfoList = DbColumnInfoList.Where(it => {
                     if (it.Value.ObjToString()=="0" && it.PropertyType.IsEnum)
                     {
-                        return it.Value.ObjToInt() != UtilMethods.DefaultForType(it.PropertyType).ObjToInt();
+                        return it.Value.ObjToLong() != UtilMethods.DefaultForType(it.PropertyType).ObjToLong();
                     }
                     else
                     {
diff --git a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilConvert.cs b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilConvert.cs
index a645ee55b..e70608361 100644
--- a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilConvert.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilConvert.cs
@@ -13,7 +13,7 @@ namespace SqlSugar
             if (thisValue == null) return 0;
             if (thisValue is Enum)
             {
-                return (int)thisValue;
+                return Convert.ToInt32(thisValue);
             }
             if (thisValue != null && thisValue != DBNull.Value && int.TryParse(thisValue.ToString(), out reval))
             {
@@ -22,6 +22,21 @@ namespace SqlSugar
             return reval;
         }
 
+        public static long ObjToLong(this object thisValue)
+        {
+            long reval = 0;
+            if (thisValue == null) return 0;
+            if (thisValue is Enum)
+            {
+                return Convert.ToInt64(thisValue);
+            }
+            if (thisValue != null && thisValue != DBNull.Value && long.TryParse(thisValue.ToString(), out reval))
+            {
+                return reval;
+            }
+            return reval;
+        }
+
         public static int ObjToInt(this object thisValue, int errorValue)
         {
             int reval = 0;