| From: | Joe Conway <mail(at)joeconway(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Martin Kalcher <martin(dot)kalcher(at)aboutsource(dot)net>, John Naylor <john(dot)naylor(at)enterprisedb(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: [PATCH] Introduce array_shuffle() and array_sample() |
| Date: | 2022-07-22 16:49:10 |
| Message-ID: | 5550d5cb-ba8a-436b-cb9d-ae638ce13a24@joeconway.com |
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| Lists: | pgsql-general pgsql-hackers |
On 7/19/22 10:20, Tom Lane wrote:
> Everything else either explicitly rejects more-than-one-D arrays
> or does something that is compatible with thinking of them as
> arrays-of-arrays.
I think I am responsible for at least some of those, and I agree that
thinking of MD arrays as arrays-of-arrays is preferable even though they
are not actually that. Long ago[1] Peter E asked me to fix that as I
recall but it was one of those round tuits that I never found.
> So I withdraw my original position. These functions should just
> shuffle or select in the array's first dimension, preserving
> subarrays. Or else be lazy and reject more-than-one-D arrays;
> but it's probably not that hard to handle them.
+1
Joe
--
Joe Conway
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
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