logilab-database #84168 implement a copy_from method [open]

Some backends / python-modules allow COPY-like statements (see http://initd.org/psycopg/docs/cursor.html#cursor.copy_from for instance).

The default implementation could either raise a NotImplementedError or use executemany.

prioritynormal
typeenhancement
done in<not specified>
closed by<not specified>