Re: Make an id field max(id)+1 rather than SERIAL - Mailing list pgsql-novice

On Thu, 2002-09-19 at 15:14, Rory Campbell-Lange wrote:
> I have problems after exporting then importing data into newly created
> databases that the sequence and the indexed serial fields get out of
> alignment.
>
> I wonder if it isn't better to always simply insert ids using some sort
> of function or other procedure to calculate on each insert a new unique
> id number.

After you import data, you must also reset the sequence:

  SELECT setval('sequence_name',
        (SELECT MAX(sequence_column) FROM table));
--
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight, UK
http://www.lfix.co.uk/oliver
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