diff --git a/example/src/main/scala/com/vesoft/nebula/examples/connector/NebulaSparkReaderExample.scala b/example/src/main/scala/com/vesoft/nebula/examples/connector/NebulaSparkReaderExample.scala
index aa4078f3..8a4a94b4 100644
--- a/example/src/main/scala/com/vesoft/nebula/examples/connector/NebulaSparkReaderExample.scala
+++ b/example/src/main/scala/com/vesoft/nebula/examples/connector/NebulaSparkReaderExample.scala
@@ -33,6 +33,7 @@ object NebulaSparkReaderExample {
     readEdges(spark)
     readVertexGraph(spark)
     readEdgeGraph(spark)
+    readEdgeWithNgql(spark)
 
     spark.close()
     sys.exit()
@@ -178,11 +179,15 @@ object NebulaSparkReaderExample {
       .builder()
       .withSpace("test")
       .withLabel("friend")
+      // please make sure you have config the NoColumn true or returnCols with at least one column.
+      //.withNoColumn(true)
+      .withReturnCols(List("degree"))
+      // please make sure your ngql statement result is edge, connector does not check the statement.
       .withNgql("match (v)-[e:friend]-(v2) return e")
       .build()
     val edge = spark.read.nebula(config, nebulaReadConfig).loadEdgesToDfByNgql()
     edge.printSchema()
     edge.show(20)
-    println("veedgertex count: " + edge.count())
+    println("edge count: " + edge.count())
   }
 }
diff --git a/nebula-spark-connector/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala b/nebula-spark-connector/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
index 3cd6c7d6..8856aa29 100644
--- a/nebula-spark-connector/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
+++ b/nebula-spark-connector/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
@@ -27,7 +27,7 @@ class WriteInsertSuite extends AnyFunSuite with BeforeAndAfterAll {
   test("write vertex into test_write_string space with insert mode") {
     SparkMock.writeVertex()
     val addresses: List[Address] = List(new Address("127.0.0.1", 9669))
-    val graphProvider = new GraphProvider(addresses, 3000)
+    val graphProvider            = new GraphProvider(addresses, 3000)
 
     graphProvider.switchSpace("root", "nebula", "test_write_string")
     val createIndexResult: ResultSet = graphProvider.submit(
@@ -50,7 +50,7 @@ class WriteInsertSuite extends AnyFunSuite with BeforeAndAfterAll {
     SparkMock.writeEdge()
 
     val addresses: List[Address] = List(new Address("127.0.0.1", 9669))
-    val graphProvider = new GraphProvider(addresses, 3000)
+    val graphProvider            = new GraphProvider(addresses, 3000)
 
     graphProvider.switchSpace("root", "nebula", "test_write_string")
     val createIndexResult: ResultSet = graphProvider.submit(
@@ -63,7 +63,7 @@ class WriteInsertSuite extends AnyFunSuite with BeforeAndAfterAll {
 
     graphProvider.submit("use test_write_string;")
     val resultSet: ResultSet =
-      graphProvider.submit("match (v:person_connector)-[e:friend_connector] -> ()  return e;")
+      graphProvider.submit("match (v:person_connector)-[e:friend_connector]-> ()  return e;")
     assert(resultSet.isSucceeded)
     assert(resultSet.getColumnNames.size() == 1)
     assert(resultSet.getRows.size() == 13)
diff --git a/nebula-spark-connector_2.2/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala b/nebula-spark-connector_2.2/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
index 5b9bf051..11bee4df 100644
--- a/nebula-spark-connector_2.2/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
+++ b/nebula-spark-connector_2.2/src/test/scala/com/vesoft/nebula/connector/writer/WriteInsertSuite.scala
@@ -65,7 +65,7 @@ class WriteInsertSuite extends AnyFunSuite with BeforeAndAfterAll {
 
     graphProvider.submit("use test_write_string;")
     val resultSet: ResultSet =
-      graphProvider.submit("match (v:person_connector)-[e:friend_connector] -> ()  return e;")
+      graphProvider.submit("match (v:person_connector)-[e:friend_connector]-> ()  return e;")
     assert(resultSet.getColumnNames.size() == 1)
     assert(resultSet.getRows.size() == 13)