diff --git a/integration-test/src/test/java/org/apache/iotdb/relational/it/schema/IoTDBDatabaseIT.java b/integration-test/src/test/java/org/apache/iotdb/relational/it/schema/IoTDBDatabaseIT.java
index c98421e27725..4d7ca76e7a5f 100644
--- a/integration-test/src/test/java/org/apache/iotdb/relational/it/schema/IoTDBDatabaseIT.java
+++ b/integration-test/src/test/java/org/apache/iotdb/relational/it/schema/IoTDBDatabaseIT.java
@@ -456,6 +456,9 @@ public void testMixedDatabase() throws SQLException {
             EnvFactory.getEnv().getConnection(BaseEnv.TABLE_SQL_DIALECT);
         final Statement statement = connection.createStatement()) {
       statement.execute("create database test");
+      statement.execute("use test;");
+      statement.execute("create table table1(id1 tag, s1 string);");
+      statement.execute("insert into table1 values(0, 'd1', null), (1,'d1', 1);");
     }
 
     try (final Connection connection = EnvFactory.getEnv().getConnection();
@@ -463,6 +466,7 @@ public void testMixedDatabase() throws SQLException {
       statement.execute("create database root.test");
       statement.execute(
           "alter database root.test WITH SCHEMA_REGION_GROUP_NUM=2, DATA_REGION_GROUP_NUM=3");
+      statement.execute("insert into root.test.d1 (s1) values(1)");
       statement.execute("drop database root.test");
     }