Hi

I try to do the following in a table that has 4 columns,

id - month - day- time

The column id is the primary key, for example

id - month . day - time
1 Jan 22 16:15
2 Jan 22 16:16
3 Jan 22 16:17
4 Jan 22 16:18

But I pretend that automatically when I made an INSERT INTO table (month,
day, time) values (A,B,C) the primary key update his value increasing by one


I dont know how to do this, Iam using Postgres 7.4 with PgAdminIII

Thank you

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If you want to use a primary key that increase in value by one each time consider using a sequence.

See http://www.postgresql.org/docs/7.4/s...esequence.html

On Mon, Jun 14, 2004 at 07:17:37PM -0500, Eduardo V. Rodríguez wrote:
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Eduardo V. Rodríguez wrote:

CREATE TABLE foo (id_foo SERIAL PRIMARY KEY, month ...);

SERIAL is of type int creates automatically a sequence that increments each time you don't specify
the id in an INSERT.

HTH
--
e-Trolley Sayegh & John, Nabil Sayegh
Tel.: 0700 etrolley /// 0700 38765539
Fax.: +49 69 8299381-8
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Ok thanks for all the ideas I got it

-----Original Message-----
From: Bruno Wolff III [mailto:bruno (AT) wolff (DOT) to]
Sent: Wednesday, June 16, 2004 1:13 PM
To: Eduardo V. Rodríguez
Cc: Postgres (E-mail)
Subject: Re: [NOVICE] Primary Key


On Mon, Jun 14, 2004 at 19:17:37 -0500,
"Eduardo V. Rodríguez" <evazquez (AT) insys-corp (DOT) com.mx> wrote:
Depending on what you really want sequences might be the solution.
Sequences really only provide you with unique values. If you really need
the values not have any gaps in the numbers then you will need to do
more work (especially if you will be deleting rows).

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On Mon, Jun 14, 2004 at 19:17:37 -0500,
"Eduardo V. Rodríguez" <evazquez (AT) insys-corp (DOT) com.mx> wrote:
Depending on what you really want sequences might be the solution.
Sequences really only provide you with unique values. If you really need
the values not have any gaps in the numbers then you will need to do
more work (especially if you will be deleting rows).

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