Re: Some questions about the array.

On Fri, Oct 9, 2015 at 8:02 AM, YUriy Zhuravlev
<u(dot)zhuravlev(at)postgrespro(dot)ru> wrote:
> We were some of the issues associated with the behavior of arrays.
> 1. We would like to implement arrays negative indices (from the end) like in
> Python or Ruby: arr[-2] or arr[1: -1]
> but as an array can be indexed in the negative area so it probably can not be
> done.

That seems like a complete non-starter because it would break backward
compatibility. Our array implementation allows negative indexes:

rhaas=# select ('[-1:4]={3,1,4,1,5,9}'::int[])[-1];
int4
------
3
(1 row)

--
Robert Haas
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