Hi,
maybe this does the job already (/ is integer division):
SELECT i, 1 + (i-1) / 3
FROM generate_series(1,10) AS i;
An expression like (i-1) / 3 could, of course, also be used as partitioning
criterion in GROUP BY and/or window functions.
Cheers,
—T
On Sat, Aug 1, 2020 at 2:15 PM Mike Martin <redtux1(at)gmail(dot)com> wrote:
> Say I have a field of ints, as for example created by with ordinality or
> generate_series, is it possible to group by a range? eq
>
> 1,2,3,4,5,6,7,8,9,10
> step 3
> so output is
>
> 1 1
> 2 1
> 3 1
> 4 2
> 5 2
> 6 2
> 7 3
> 8 3
> 9 3
> 10 4
>
> thanks
>
--
| Torsten Grust
| Torsten(dot)Grust(at)gmail(dot)com