Update statement in ms access jdbc not updating the row
Typically in a database program like this you'll end up updating rows based on the primary key of the database table.Specifically, in this example, you'd probably already know the "id" for the user Fred, and when you go to update Fred's data, you would normally do it like this: but because this is a sample program, I decided to show the query this way.In this chapter, from Inside Servlets, the authors examine the Java Database Connectivity (JDBC) API and demonstrate database connectivity from within a servlet.In addition, they discuss some advanced database concepts, including prepared statements, transactions, stored procedures, and connection pooling.Finally, they present a sample JDBC servlet using the My SQL database.In this chapter, we will examine the Java Database Connectivity (JDBC) API and demonstrate database connectivity from within a servlet.To keep it simple — but also show several different data types — I've created the following My SQL database table: create table users ( id int unsigned auto_increment not null, first_name varchar(32) not null, last_name varchar(32) not null, date_created timestamp default now(), is_admin boolean, num_points int, primary key (id) ); -- insert some sample records insert into users (first_name, last_name) values ('Fred', 'Flinstone'); insert into users (first_name, last_name) values ('Barney', 'Rubble'); A few of these fields are a little contrived, but I wanted to show several different data types in one table, so this is what I came up with.
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums Hi I am working on a java program to read from a text file information and update a table withiin a MS Database. Jdbc Odbc.standard Error(Jdbc Odbc.java:7129) at odbc. Event Dispatch Events(Event Dispatch Thread.java:160) at Jdbc Odbc.create SQLException(Jdbc Odbc.java:6986) at odbc. Jdbc Odbc.standard Error(Jdbc Odbc.java:7114) at odbc. Event Dispatch Events(Event Dispatch Thread.java:160) at It contains information about the Web application and container. Using the context, a servlet can obtain URL references to resources, and store attributes that other servlets in the context can use.I'm Nataraja Gootooru, programmer by profession and passionate about technologies.Note that in this example my My SQL database username is "root", my password is blank, and the My SQL database is running on the same computer where this program is run, so the database host name is "localhost". * Demonstrates the use of a SQL UPDATE statement against a * My SQL database, called from a Java program.* * Created by Alvin Alexander, */ public class Java Mysql Prepared Statement Update Example Note that this SQL UPDATE query is a little unusual, but not totally uncommon.