Re: Alter Table Auto_Increment

On 09/20/2010 11:40 AM, Carlos Mennens wrote:
> On Mon, Sep 20, 2010 at 10:08 AM, Thom Brown<thom@linux.com>  wrote:
>> CREATE SEQUENCE seq_blades_id;
>> SELECT setval('seq_blades_id', max(id)) FROM blades; -- set the
>> sequence's value to the maximum value of "id"
>> ALTER TABLE blades ALTER COLUMN id SET DEFAULT
>> nextval('seq_blades_id'); -- make default value get value from
>> sequence
>
> That appeared to work fine. My question that I can't find in the
> documentation is that if I already have one row created where my 'id =
> 1' for AUTO_INCREMENT, how do I enter future values into my table and
> force id to auto_increment rather than having me type the value into
> the SQL command? This way I can let PostgreSQL add the next INTEGER
> rather than me having to know and avoid duplicates.
>
> INSERT INTO blades VALUES (
> '2',
> 'data',
> 'data',
> 'data',
> '1234',
> '2010-09-20
> );
>
> Is there a way I can omit having to type the '2' above in my SQL
> command if 'id' column is configured for AUTO_INCREMENT
>

INSERT INTO blades VALUES (
  DEFAULT,
  'data',
  'data',
  'data',
  '1234',
  '2010-09-20
  );

--
Adrian Klaver
adrian.klaver@gmail.com