Re: Getting tables from one DB to another

On Wednesday 15 December 2010 01:07:33 JORGE MALDONADO wrote:
> We actually have an application with its database working and we are
> developing a new version of such an application based on the same database
> but with minor changes in a few tables. When finished, we want to get the
> data in the actual DB to the new one but we see a liitle problem. Each
>  table has a serial field which works as a primary key and we would like to
>  keep these fields with their original values in the new tables. I suppose
>  I cannot use pg_restore from a backup because of the difference among some
>  old tables and some new ones; maybe one way could be to write an
>  application that reads each record from the old table and inserts it to
>  the new one but in this case the serial field could be different from the
>  original. How can I achieve this goal?
>
> Respectfully,
> Jorge Maldonado
>

Hi Jorge,

You could you use eg. (Pg 8.4)

SELECT last_value, is_called FROM table_field_id_seq;

to see what is the last value in the old db and if it is called and then

SELECT pg_catalog.setval ('table_field_id_seq', 1234, true);

to set that serial in the new db.

BR,

Aarni

--
Aarni Ruuhimäki
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