2019/05/30 16:33、Amit Langote のメール:
>> On 2019/05/29 15:50, Kohei KaiGai wrote:
>> 2019年5月29日(水) 13:26 Amit Langote :
It means we can skip to load the sub-fields unreferenced, if
query-planner can handle
referenced and unreferenced sub-fields correctly.
On the other hands, it
On 2019/05/29 15:50, Kohei KaiGai wrote:
> 2019年5月29日(水) 13:26 Amit Langote :
>>> It means we can skip to load the sub-fields unreferenced, if
>>> query-planner can handle
>>> referenced and unreferenced sub-fields correctly.
>>> On the other hands, it looks to me RelOptInfo or other optimizer
>>>
On Wed, May 29, 2019 at 4:51 PM Kohei KaiGai wrote:
> Hi Amit,
>
> 2019年5月29日(水) 13:26 Amit Langote :
> >
> > Kaigai-san,
> >
> > On 2019/05/29 12:13, Kohei KaiGai wrote:
> > > One interesting data type in Apache Arrow is "Struct" data type. It is
> > > equivalent to composite
> > > type in
Hi Amit,
2019年5月29日(水) 13:26 Amit Langote :
>
> Kaigai-san,
>
> On 2019/05/29 12:13, Kohei KaiGai wrote:
> > One interesting data type in Apache Arrow is "Struct" data type. It is
> > equivalent to composite
> > type in PostgreSQL. The "Struct" type has sub-fields, and individual
> > sub-fields
Kaigai-san,
On 2019/05/29 12:13, Kohei KaiGai wrote:
> One interesting data type in Apache Arrow is "Struct" data type. It is
> equivalent to composite
> type in PostgreSQL. The "Struct" type has sub-fields, and individual
> sub-fields have its own
> values array for each.
>
> It means we can
Hello,
A recent revision of PG-Strom has its columnar-storage using Apache
Arrow format files on
FDW infrastructure. Because of the columnar nature, it allows to load
the values which are
referenced by the query, thus, maximizes efficiency of the storage bandwidth.
