On Fri, Nov 9, 2018 at 2:14 PM Wes McKinney wrote:
> On Fri, Nov 9, 2018 at 4:51 PM Matt Dowle wrote:
> >
> > > There is one database that I'm aware of that uses sentinels _and_
> > supports complex types with missing values: Kx's KDB+.
> > I read this a
different
> meaning was "okay". I can tell you from working in a large advertising
> company, that it is critical to have a reliable way to distinguish null
> from not null, and a space had better be not null. It's possible that my
> knowledge about kdb+ is out of date, in w
ple" but the intent is to be a
> > suitable lingua franca for language agnostic data interchange and as a
> > runtime representation for analytical query engines (where most
> > operators are "pure"). If the Arrow community's goal were to create a
> > "
all-null. Being able to
> do that without having to read each value individually can be the largest
> of all wins, especially where many people declare all data as nullable but
> rarely use that nullability.
>
>
>
>
>
>
> On Mon, Nov 5, 2018 at 2:31 PM Matt Dowle wrot
Hi,
(First post to this mailing list.)
I tweeted here and Wes invited me to follow up on this list :
https://twitter.com/wesmckinn/status/1059440916987961346
Wes - it was great to meet you at Stanford in September. There I mentioned
the assign/update aspect which is a downside of bitmap for NA, im
