Merge pull request #83 from gonwan/dev

fix PreparedStatement.
diff --git a/common-repository/jdbc-repository/src/main/java/io/shardingsphere/example/repository/jdbc/repository/JDBCOrderItemRepositoryImpl.java b/common-repository/jdbc-repository/src/main/java/io/shardingsphere/example/repository/jdbc/repository/JDBCOrderItemRepositoryImpl.java
index b5ed4a9..ddd032c 100644
--- a/common-repository/jdbc-repository/src/main/java/io/shardingsphere/example/repository/jdbc/repository/JDBCOrderItemRepositoryImpl.java
+++ b/common-repository/jdbc-repository/src/main/java/io/shardingsphere/example/repository/jdbc/repository/JDBCOrderItemRepositoryImpl.java
@@ -93,7 +93,7 @@
         try (Connection connection = dataSource.getConnection();
              PreparedStatement preparedStatement = connection.prepareStatement(sql)) {
             preparedStatement.setLong(1, orderItemId);
-            preparedStatement.executeUpdate(sql);
+            preparedStatement.executeUpdate();
         } catch (final SQLException ignored) {
         }
     }
diff --git a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
index abc0ff7..5fb31bf 100644
--- a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
@@ -9,7 +9,6 @@
         <version>3.1.0-SNAPSHOT</version>
     </parent>
     <artifactId>spring-boot-nodep-jpa-example</artifactId>
-    <packaging>pom</packaging>
     
     <dependencies>
         <dependency>