JDBC for SQL Server - Herong's Tutorial Examples - v3.14, by 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) 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=herong;password=T0pSecret;" + "database=AdventureWorks2019"); // 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:
herong> java -cp .;mssql-jdbc-9.4.1.jre16.jar ExecuteUpdate.java 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.
Table of Contents
JDBC (Java Database Connectivity) Introduction
Microsoft SQL Server Express Edition
Microsoft JDBC Driver for SQL Server
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
Using Connection Pool with JDBC
JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver
JDBC-ODBC Bridge Driver - Flat Text Files
JDBC-ODBC Bridge Driver - MS Access