diff --git a/pglab/catalog/models/ConstraintModel.cpp b/pglab/catalog/models/ConstraintModel.cpp
index 02b36ea..9933db5 100644
--- a/pglab/catalog/models/ConstraintModel.cpp
+++ b/pglab/catalog/models/ConstraintModel.cpp
@@ -55,6 +55,9 @@ QVariant ConstraintModel::headerData(int section, Qt::Orientation orientation, i
 			case SupportingIndexCol:
 				c = tr("Supporting index");
 				break;
+            case InheritedCol:
+                c = tr("Inherited");
+                break;
 //			case DefinitionCol:
 //				c = tr("Definition");
 //				break;
@@ -85,11 +88,17 @@ int ConstraintModel::columnCount(const QModelIndex &) const
 //	return v;
 //}
 
-Oid ConstraintModel::getType(int ) const
+Oid ConstraintModel::getType(int col) const
 {
-	Oid oid = Pgsql::varchar_oid;
-
-	return oid;
+    Oid oid;
+    switch (col) {
+    case InheritedCol:
+        oid = Pgsql::bool_oid;
+        break;
+    default:
+        oid = Pgsql::varchar_oid;
+    }
+    return oid;
 }
 
 QString IconForConstraintType(ConstraintType ct)
@@ -128,25 +137,27 @@ QVariant ConstraintModel::getData(const QModelIndex &index) const
 	const auto &t = m_constraints[row];
 
 	const int col = index.column();
-	QString s;
-	switch (col) {
+
+    switch (col) {
 	case TypeCol:
-		s = IconForConstraintType(t.type);
+        v = IconForConstraintType(t.type);
 		break;
 	case NameCol:
-		s = t.objectName();
+        v = t.objectName();
 		break;
 	case NsCol:
-		s = t.nsName();
+        v = t.nsName();
 		break;
 	case SupportingIndexCol:
-		s = getIndexDisplayString(*m_catalog, t.indid);
+        v = getIndexDisplayString(*m_catalog, t.indid);
 		break;
+    case InheritedCol:
+        v = t.isInherited();
+        break;
 //	case DefinitionCol:
 //		s = t.definition;
 //		break;
 	}
-	v = s;
 
 	return v;
 }
diff --git a/pglab/catalog/models/ConstraintModel.h b/pglab/catalog/models/ConstraintModel.h
index 29b4bcf..42dea1b 100644
--- a/pglab/catalog/models/ConstraintModel.h
+++ b/pglab/catalog/models/ConstraintModel.h
@@ -19,6 +19,7 @@ public:
 		NameCol, ///
 		NsCol, ///
 		SupportingIndexCol,
+        InheritedCol,
 //		DefinitionCol,
 		colCount };
 
diff --git a/pglab/catalog/widgets/CatalogConstraintPage.cpp b/pglab/catalog/widgets/CatalogConstraintPage.cpp
index a910c57..6140e64 100644
--- a/pglab/catalog/widgets/CatalogConstraintPage.cpp
+++ b/pglab/catalog/widgets/CatalogConstraintPage.cpp
@@ -34,13 +34,21 @@ void CatalogConstraintPage::setFilter(const std::optional<PgClass> &cls)
 
 void CatalogConstraintPage::tableView_selectionChanged(const QItemSelection &/*selected*/, const QItemSelection &/*deselected*/)
 {
-	auto rijen = selectedRows();
-	QString drops;
-	QString creates;
-	for (auto rij : rijen) {
-		const PgConstraint constraint = m_constraintModel->constraint(rij);
-		drops += constraint.dropSql() % "\n";
-		creates += constraint.createSql() % "\n";
-	}
-	m_definitionView->setPlainText(drops % "\n" % creates);
+    m_definitionView->setPlainText(
+        generateSql(
+            selectedRows()
+        )
+    );
+}
+
+QString CatalogConstraintPage::generateSql(const std::unordered_set<int> &rijen)
+{
+    QString drops;
+    QString creates;
+    for (auto rij : rijen) {
+        const PgConstraint constraint = m_constraintModel->constraint(rij);
+        drops += constraint.dropSql() % "\n";
+        creates += constraint.createSql() % "\n";
+    }
+    return drops % "\n" % creates;
 }
diff --git a/pglab/catalog/widgets/CatalogConstraintPage.h b/pglab/catalog/widgets/CatalogConstraintPage.h
index ea8c212..43e53b9 100644
--- a/pglab/catalog/widgets/CatalogConstraintPage.h
+++ b/pglab/catalog/widgets/CatalogConstraintPage.h
@@ -22,6 +22,7 @@ private:
 
 	ConstraintModel *m_constraintModel = nullptr;
 
+    QString generateSql(const std::unordered_set<int> &rows);
 private slots:
 	void tableView_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
 };
diff --git a/pglablib/catalog/PgConstraint.cpp b/pglablib/catalog/PgConstraint.cpp
index 9c06487..83ad036 100644
--- a/pglablib/catalog/PgConstraint.cpp
+++ b/pglablib/catalog/PgConstraint.cpp
@@ -1,5 +1,6 @@
 #include "PgConstraint.h"
 #include "SqlFormattingUtils.h"
+#include <QStringBuilder>
 
 void operator<<(ConstraintType &s, const Pgsql::Value &v)
 {
@@ -176,10 +177,16 @@ QString PgConstraint::typeName() const
 
 QString PgConstraint::dropSql() const
 {
-	return getDropConstraintDefinition(catalog(), *this);
+    if (isInherited())
+        return "-- " % objectName() % " is inherited";
+
+    return getDropConstraintDefinition(catalog(), *this);
 }
 
 QString PgConstraint::createSql() const
 {
-	return getAlterTableConstraintDefinition(catalog(), *this);
+    if (isInherited())
+        return "-- " % objectName() % " is inherited";
+
+    return getAlterTableConstraintDefinition(catalog(), *this);
 }