diff --git a/core/src/main/java/org/apache/calcite/rel/metadata/RelMdNodeTypes.java b/core/src/main/java/org/apache/calcite/rel/metadata/RelMdNodeTypes.java
index 22737b67ff04..c0d856672004 100644
--- a/core/src/main/java/org/apache/calcite/rel/metadata/RelMdNodeTypes.java
+++ b/core/src/main/java/org/apache/calcite/rel/metadata/RelMdNodeTypes.java
@@ -27,6 +27,7 @@
 import org.apache.calcite.rel.core.Minus;
 import org.apache.calcite.rel.core.Project;
 import org.apache.calcite.rel.core.Sort;
+import org.apache.calcite.rel.core.TableModify;
 import org.apache.calcite.rel.core.TableScan;
 import org.apache.calcite.rel.core.Union;
 import org.apache.calcite.rel.core.Values;
@@ -128,6 +129,11 @@ public Multimap<Class<? extends RelNode>, RelNode> getNodeTypes(Values rel,
     return getNodeTypes(rel, Values.class, mq);
   }
 
+  public Multimap<Class<? extends RelNode>, RelNode> getNodeTypes(TableModify rel,
+      RelMetadataQuery mq) {
+    return getNodeTypes(rel, TableModify.class, mq);
+  }
+
   private static Multimap<Class<? extends RelNode>, RelNode> getNodeTypes(RelNode rel,
       Class<? extends RelNode> c, RelMetadataQuery mq) {
     final Multimap<Class<? extends RelNode>, RelNode> nodeTypeCount = ArrayListMultimap.create();
diff --git a/core/src/test/java/org/apache/calcite/test/RelMetadataTest.java b/core/src/test/java/org/apache/calcite/test/RelMetadataTest.java
index 785ae17c0ea3..ee60ff2659ed 100644
--- a/core/src/test/java/org/apache/calcite/test/RelMetadataTest.java
+++ b/core/src/test/java/org/apache/calcite/test/RelMetadataTest.java
@@ -42,6 +42,7 @@
 import org.apache.calcite.rel.core.Minus;
 import org.apache.calcite.rel.core.Project;
 import org.apache.calcite.rel.core.Sort;
+import org.apache.calcite.rel.core.TableModify;
 import org.apache.calcite.rel.core.TableScan;
 import org.apache.calcite.rel.core.Union;
 import org.apache.calcite.rel.core.Values;
@@ -2350,6 +2351,15 @@ private void checkNodeTypeCount(String sql, Map<Class<? extends RelNode>, Intege
     checkNodeTypeCount(sql, expected);
   }
 
+  @Test public void testNodeTypeTableModify() {
+    final String sql = "insert into emp select * from emp";
+    final Map<Class<? extends RelNode>, Integer> expected = new HashMap<>();
+    expected.put(TableScan.class, 1);
+    expected.put(TableModify.class, 1);
+    expected.put(Project.class, 1);
+    checkNodeTypeCount(sql, expected);
+  }
+
   @Test public void testNodeTypeCountJoinFinite() {
     final String sql = "select * from (select * from emp limit 14) as emp\n"
         + "inner join (select * from dept limit 4) as dept\n"