> * I implemented this proposal only in C++. The
  implementation is already merged into apache/arrow. Should
  we have one more implementation like format specification
  change?

http://crossbow.voltrondata.com/pr_docs/43553/format/Changing.html#at-least-two-reference-implementations

Sorry to be that guy, but I would prefer having one more implementation as
this qualifies as a format change IMHO. So I'm +0 (binding) on this without
a second implementation. I won't oppose it getting merged, but that would
be my preference.

On Thu, Dec 5, 2024 at 12:48 AM Gang Wu <ust...@gmail.com> wrote:

> +1 (binding)
>
> I've left a minor comment to solicit concrete examples of data
> in the statistics array if this is reasonable.
>
> Best,
> Gang
>
> On Thu, Dec 5, 2024 at 11:17 AM wish maple <maplewish...@gmail.com> wrote:
>
> > +1 (non-binding)
> >
> > Best,
> > Xuwei Fu
> >
> > Sutou Kouhei <k...@clear-code.com> 于2024年12月5日周四 10:58写道:
> >
> > > Hi,
> > >
> > > I would like to propose standardizing how to pas statistics
> > > through the C data interface.
> > >
> > > Motivation:
> > >
> > > * We want to pass not only Apache Arrow data but also
> > >   statistics of them through the C data interface for query
> > >   planning.
> > >
> > > Approach:
> > >
> > > * Define a standardized schema for statistics.
> > > * Represent statistics as an Apache Arrow array that uses
> > >   the schema.
> > > * Pass the statistics Apache Arrow array through the C data
> > >   interface like a normal Apache Arrow array.
> > >
> > > Note that we don't define a new interface for statistics. We
> > > just use the existing C data interface. A statistics Apache
> > > Arrow array is passed through a separated API call.
> > >
> > > See also:
> > >
> > > * The discussion of this:
> > >   https://lists.apache.org/thread/z0jz2bnv61j7c6lbk7lympdrs49f69cx
> > > * The PR of this proposal that includes the statistics
> > >   schema definition:
> > >   https://github.com/apache/arrow/pull/43553
> > > * The preview URL of the PR:
> > >
> > >
> >
> http://crossbow.voltrondata.com/pr_docs/43553/format/CDataInterfaceStatistics.html
> > >
> > > Note:
> > >
> > > * I implemented this proposal only in C++. The
> > >   implementation is already merged into apache/arrow. Should
> > >   we have one more implementation like format specification
> > >   change?
> > >
> > >
> >
> http://crossbow.voltrondata.com/pr_docs/43553/format/Changing.html#at-least-two-reference-implementations
> > >
> > >
> > > The vote will be open for at least 72 hours.
> > >
> > > [ ] +1 Accept this proposal
> > > [ ] +0
> > > [ ] -1 Do not accept this proposal because...
> > >
> > >
> > > Thanks,
> > > --
> > > kou
> > >
> >
>

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