| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Steve Midgley <science(at)misuse(dot)org> |
| Cc: | aditya desai <admad123(at)gmail(dot)com>, Hubert Lubaczewski <depesz(at)depesz(dot)com>, pgsql-sql <pgsql-sql(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Partition by outer join |
| Date: | 2021-08-24 16:09:26 |
| Message-ID: | CAKFQuwaTxJsS_7pm0RjrEOZDXJS=HmVG5ZJq7Y-n=1k6Bon6Gg@mail.gmail.com |
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| Lists: | pgsql-sql |
On Tue, Aug 24, 2021 at 9:02 AM Steve Midgley <science(at)misuse(dot)org> wrote:
>
> From that stackexchange post, it appears that partition in Oracle is
> similar to cross joins in Postgres -- where elements are included in the
> result set as a matrix, whether they exist in the source data or not (so
> sparsely populated values are included as nulls when they exist in either
> of the two columns that are cross joined).
>
What you describe sounds like it would be an SQL Standard (I think) "FULL
OUTER JOIN".
David J.
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