Re: break table into portions for writing to separate files

On 1 May 2014 21:01, Seb <spluque(at)gmail(dot)com> wrote:

> On Thu, 1 May 2014 20:22:26 +0200,
> Szymon Guz <mabewlun(at)gmail(dot)com> wrote:
>
> > Hi, several Gb is about 1GB, that's not too much. In case you meant
> > 'several GB', that shouldn't be a problem as well.
>
> Sorry, I meant several GB. Although that may not be a problem for
> PostgreSQL, it is for post-processing the output file with other tools.
>
>
> > The first thing I'd do would be creating an index on the column used
> > for dividing the data. Then I'd just use the command COPY with a
> > proper select to save the data to a file.
>
> I should have mentioned that this is quite a complex view (not a table),
> which joins several other views of similar complexity. I'm not sure
> whether indexes are useful/feasible in this case. I'll investigate.
>

Yes, indexes can be used to speed up the view as well. Such a view is
nothing more than just a query.

regards,
Szymon