Обсуждение: Referencing Serial Type as Foreign Key

   Don't know why I've not come across this before, but I have now.

   In a table definition I reference the primary key of another table. That
key is of datatype SERIAL. In the referencing table, do I define the column
as

   col_name INTEGER REFERENCES other-table (primary_key_field),

or is the datatype SERIAL because that's what the referenced
primary_key_field is?

Thanks,

Rich

--
Dr. Richard B. Shepard, President
Applied Ecosystem Services, Inc. (TM)
<http://www.appl-ecosys.com>   Voice: 503-667-4517   Fax: 503-667-8863

Rich Shepard wrote:
>   Don't know why I've not come across this before, but I have now.
>
>   In a table definition I reference the primary key of another table. That
> key is of datatype SERIAL. In the referencing table, do I define the column
> as
>
>   col_name INTEGER REFERENCES other-table (primary_key_field),
>
> or is the datatype SERIAL because that's what the referenced
> primary_key_field is?

Serial is a psuedo type to integer/big (depending on the type of
serial). What you have above should work fine.

SIncerely,

Joshua D. Drake


>
> Thanks,
>
> Rich
>


--
Your PostgreSQL solutions company - Command Prompt, Inc. 1.800.492.2240
PostgreSQL Replication, Consulting, Custom Programming, 24x7 support
Managed Services, Shared and Dedicated Hosting
Co-Authors: plPHP, plPerlNG - http://www.commandprompt.com/

On Fri, 3 Jun 2005, Joshua D. Drake wrote:

> Serial is a psuedo type to integer/big (depending on the type of serial).

Josh,

   That's what I thought.

> What you have above should work fine.

   OK.

Many thanks,

Rich

--
Dr. Richard B. Shepard, President
Applied Ecosystem Services, Inc. (TM)
<http://www.appl-ecosys.com>   Voice: 503-667-4517   Fax: 503-667-8863