Re: Documentation improvements for partitioning

On 2017/04/01 6:37, Robert Haas wrote:
> On Tue, Mar 28, 2017 at 6:35 AM, Amit Langote
> <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>> Attached updated patch.
>
> Committed with editing here and there. I just left out the thing
> about UNION ALL views, which seemed to brief a treatment to deserve
> its own subsection. Maybe a longer explanation of that is worthwhile
> or maybe it's not, but that can be a separate patch.

Thanks for committing.

I noticed what looks like a redundant line (or an incomplete sentence) in
the paragraph about multi-column partition keys. In the following text:

+ partitioning, if desired. Of course, this will often result in a
larger
+ number of partitions, each of which is individually smaller.
+ criteria. Using fewer columns may lead to coarser-grained
+ A query accessing the partitioned table will have
+ to scan fewer partitions if the conditions involve some or all of
these

This:

+ criteria. Using fewer columns may lead to coarser-grained

looks redundant. But maybe we can keep that sentence by completing it,
which the attached patch does as follows:

+ number of partitions, each of which is individually smaller. On the
+ other hand, using fewer columns may lead to a coarser-grained
+ partitioning criteria with smaller number of partitions.

The patch also fixes some typos I noticed.

Thanks,
Amit