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class, and a sample My SQL database table we can work with.
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.
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.
In particular, the field "num_points" is a little unusual.
Statement.execute Update() method returns you number of records got updated.
The functionality of Enumeration and the Iterator are same.
To execute multiple SQL statements as part of a single transaction, the auto-commit is to be disabled. Committing of DML INSERT, UPDATE, or DELETE statements in JDBC programs is done automatically.
The auto-commit is set to ON by default in JDBC and a COMMIT is issued after every SQL operation.
You can get remove() from Iterator to remove an element, while while Enumeration does not have remove() method.Tags: Adult Dating, affair dating, sex dating