JDBC Tutorials - Herong's Tutorial Examples - Version 3.03, by Dr. Herong Yang
Executing "Update" Statements - executeUpdate()
This section describes how to execute 'update' SQL statements like DDL statements, or DML statements.
JDBC supports two basic types of statement executions:
Note executing update statements requires higher security permissions. I am assuming that your login has been granted enough permissions to follow my tutorials.
DDL (Data Definition Language) statements are used to create, alter or drop database objects like tables, views, indexes, or stored procedures. Here is a sample Java program that uses an executeUpdate() method to create a simple table in the current database:
/* ExecuteUpdate.java - Copyright (c) 2015, HerongYang.com, All Rights Reserved. */ import java.sql.*; public class ExecuteUpdate { public static void main(String [] args) { Connection con = null; try { con = DriverManager.getConnection( "jdbc:sqlserver://localhost\\SQLEXPRESS;" + "user=sa;password=HerongY@ng;" + "database=AdventureWorks2014"); // Executing update statements Statement sta = con.createStatement(); int count = sta.executeUpdate( "CREATE TABLE HerongTest (Name VARCHAR(20), Age INT)"); System.out.println("Return value from executeUpdate(): "+count); System.out.println("Table created."); sta.close(); con.close(); } catch (Exception e) { e.printStackTrace(); } } }
If you run this program, a new table will be created in the current database on the SQL Server, and you will get a output message like this:
C:\herong>\Progra~1\java\jdk1.8.0_45\bin\java -cp .;\local\lib\sqljdbc41.jar ExecuteUpdate Return value from executeUpdate(): 0 Table created.
But if you run it again, you will get a SQLException because the same table can not be created twice:
com.microsoft.sqlserver.jdbc.SQLServerException: There is already an object named 'HerongTest' in the database.
Last update: 2015.
Table of Contents
JDBC (Java Database Connectivity) Introduction
Installing and Running Java DB - Derby
Derby (Java DB) JDBC DataSource Objects
Java DB (Derby) - DML Statements
Java DB (Derby) - ResultSet Objects of Queries
Java DB (Derby) - PreparedStatement
MySQL JDBC Driver (MySQL Connector/J)
MySQL - Reference Implementation of JdbcRowSet
MySQL - JBDC CallableStatement
MySQL CLOB (Character Large Object) - TEXT
MySQL BLOB (Binary Large Object) - BLOB
Oracle Express Edition Installation on Windows
Oracle - Reference Implementation of JdbcRowSet
Oracle - JBDC CallableStatement
Oracle CLOB (Character Large Object) - TEXT
Oracle BLOB (Binary Large Object) - BLOB
Microsoft SQL Server 2005 Express Edition
Microsoft JDBC Driver for SQL Server - sqljdbc42.jar
Microsoft JDBC Driver - Query Statements and Result Sets
Microsoft JDBC Driver - DatabaseMetaData Object
►Microsoft JDBC Driver - DDL Statements
►Executing "Update" Statements - executeUpdate()
Microsoft JDBC Driver - DML Statements
SQL Server - PreparedStatement
SQL Server CLOB (Character Large Object) - TEXT
SQL Server BLOB (Binary Large Object) - BLOB
JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver
JDBC-ODBC Bridge Driver - Flat Text Files
JDBC-ODBC Bridge Driver - MS Access
JDBC-ODBC Bridge Driver - MS SQL Server
Summary of JDBC Drivers and Database Servers