auto_increment

I think this is any easy question, but I couldn't find an answer in the php Black Book for PostgreSQL. Does anyone know the equivilant of auto_increment for PostgreSQL? This is the php code that I have: $query = "CREATE table $tablename (id INT NOT NULL PRIMARY KEY, ip TEXT, customer TEXT, dslphone TEXT, date TEXT, vpivci TEXT)"; This creates the table, but when I need to add data to the Database, I have to specify a unique id each time. I need want the id to automatically increment each time data is added the the DataBase. Is there a way to do this by adding an auto_increment option to the id field when the table is first created? Thanks for any Help, -Elkan PHP version: 4.0.6 OS: RH 7.2 PostgreSQL: v.7.1