Andreas Kretschmer <akretschmer@despammed.com> wrote:
> > I want to import data from a csv file into an existing, non-empty
> > table. My problem is the fact that I get an "ERROR: duplicate key
> > violates unique constraint", because, as psql correctly grumbles,
> > some entries are already inside the tables. I would like to
> > overwrite these existing entries, as the data from the csv files is
> > newer.
>
> I suggest, use a separate import-table to copy the file in this table.
> After you can work with usual SQL to delete old Records in the
> destination table and insert the new records.
Is there a way to automate this? The table is quite big, I expect some
few hundred duplicate entries.