If you just don't want a primary key in your major data tables, then create a table for the express purpose of generating primary keys that uses auto_increment. Something like:
create table myseq (x serial;) Each time you need a new key, get the next value from that table. It would be more like an Oracle sequence that an auto_increment. On Mon, Apr 27, 2009 at 11:59 PM, yuan edit <edit.y...@gmail.com> wrote: > I have a shopping cart table like this: > > CREATE TABLE shopping_cart( > id VARCHAR(20) NOT NULL, > product_id INT NOT NULL, > product_quantity INT NOT NULL, > ... > ... > user_id INT NOT NULL, > current_timestamp TIMESTAMP, > primary key (id) > ); > > I will not use auto_increment > > Is there other way to generate unique primary key in MySQL? > > Thank you > -- Jim Lyons Web developer / Database administrator http://www.weblyons.com
