add sub-query unit test.

sharding-jdbc-example/raw-jdbc-nodep-example/src/test/java/io/shardingsphere/example/jdbc/nodep/JavaConfigurationExampleTest.java

@@ -17,13 +17,18 @@
 
 package io.shardingsphere.example.jdbc.nodep;
 
+import io.shardingsphere.example.jdbc.nodep.config.ShardingDatabasesConfigurationPrecise;
 import io.shardingsphere.example.jdbc.nodep.factory.CommonServiceFactory;
 import io.shardingsphere.example.repository.api.senario.CommonServiceScenario;
 import io.shardingsphere.example.repository.api.trace.ResultAssertUtils;
 import io.shardingsphere.example.type.ShardingType;
 import org.junit.Test;
 
+import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
 import java.sql.SQLException;
+import java.sql.Statement;
 
 public class JavaConfigurationExampleTest {
 
@@ -89,4 +94,24 @@ public class JavaConfigurationExampleTest {
         scenario.executeShardingCRUDSuccess();
         ResultAssertUtils.assertMasterSlaveResult(scenario.getCommonService());
     }
+    
+    @Test
+    public void assertSubStatementQuery() throws SQLException {
+        DataSource dataSource = new ShardingDatabasesConfigurationPrecise().getDataSource();
+        try (Connection connection = dataSource.getConnection()) {
+            Statement statement = connection.createStatement();
+            statement.execute("select * from t_order where order_id = ("
+                + "select order_id from t_order_item where order_item_id=1 and user_id=1)");
+        }
+    }
+    
+    @Test
+    public void assertSubPrepareStatementQuery() throws SQLException {
+        DataSource dataSource = new ShardingDatabasesConfigurationPrecise().getDataSource();
+        try (Connection connection = dataSource.getConnection()) {
+            PreparedStatement preparedStatement = connection.prepareStatement("select * from t_order where order_id = ("
+                + "select order_id from t_order_item where order_item_id=1)");
+            preparedStatement.execute();
+        }
+    }
 }