Re: Is thre a way?

On 2009-05-06, Anderson dos Santos Donda <andersondonda@gmail.com> wrote:
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> Hi o/
>
> I have a table with 2000 names and emails.. and I did UPDATE list SET email
>= '' without the WHERE and now all rows is null in column email..
>
>
> I have a backup made with pg_dump.. is there a way to restore only the email
> data?

what format of pg_dump?

If a binary dump use pg_restore to restore the table you want to a
scratch database then use dblink or copy to get that into a temp table
in the database you want.

If a text dump use sed (or an interactive editor) to extract the table
data you want, load it into a temp table

finally do an
UPDATE ... FROM ....
to fix the losses.

I had to do this a few months ago.