diff --git a/pglab/ColumnTableModel.cpp b/pglab/ColumnTableModel.cpp
index 8809de8..5f46ff2 100644
--- a/pglab/ColumnTableModel.cpp
+++ b/pglab/ColumnTableModel.cpp
@@ -58,6 +58,9 @@ QVariant ColumnTableModel::headerData(int section, Qt::Orientation orientation,
 			}
 			else {
 				switch (section) {
+				case AttnumCol:
+					c = tr("#");
+					break;
 				case NameCol:
 					c = tr("Name");
 					break;
@@ -174,6 +177,9 @@ QVariant ColumnTableModel::getData(const QModelIndex &index) const
 	else {
 		QString s;
 		switch (col) {
+		case AttnumCol:
+			s = QString::asprintf("%d", (int) t.num);
+			break;
 		case NameCol:
 			s = t.name;
 			break;
diff --git a/pglab/ColumnTableModel.h b/pglab/ColumnTableModel.h
index 4cab6a0..61c7b20 100644
--- a/pglab/ColumnTableModel.h
+++ b/pglab/ColumnTableModel.h
@@ -13,6 +13,7 @@ class PgAttribute;
 class ColumnTableModel: public BaseTableModel {
 public:
 	enum e_Columns : int {
+		AttnumCol,
 		NameCol, ///
 		TypeCol,
 		NullCol,