"Tao Ma" <feng_eden@163.com> writes:
> recently, I wrote a really complex SELECT statement which consists of about
> 20 relations using NATURAL JOIN method and every single relation consists 50
> columns. It looks like:
Maybe you should rethink your schema design...
> It seems Postgres cost lots of time to copyObject().
You're completely wasting your time to optimize *that*.
regards, tom lane