Re: PostgreSQL 16 release announcement draft
Jonathan S. Katz <jkatz@postgresql.org>
From: "Jonathan S. Katz" <jkatz@postgresql.org>
To: David Rowley <dgrowleyml@gmail.com>
Cc: jian he <jian.universality@gmail.com>,
PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
chelseadole@gmail.com
Date: 2023-08-24T14:32:02Z
Lists: pgsql-hackers
Attachments
- release.en.md (text/plain)
On 8/23/23 5:07 PM, David Rowley wrote: > On Thu, 24 Aug 2023 at 05:55, Jonathan S. Katz <jkatz@postgresql.org> wrote: >> We could add something about 1349d2790 -- do you have suggested wording? > > I think it's worth a mention. See the text added in square brackets below: > > PostgreSQL 16 improves the performance of existing PostgreSQL functionality > through new query planner optimizations. In this latest release, the query > planner can parallelize `FULL` and `RIGHT` joins, [generate more > optimal plans for > queries containing aggregate functions with a `DISTINCT` or `ORDER BY` clause,] > utilize incremental sorts for `SELECT DISTINCT` queries, and optimize > window function > executions so they execute more efficiently. It also introduces > `RIGHT` and `OUTER` > "anti-joins", which enable users to identify rows not present in a joined table. I added this in mostly verbatim. I'm concerned the sentence is a bit long, but we could break it up into two: (1) with the new JOIN capabilities and (2) with the optimizations. Jonathan
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Support "Right Anti Join" plan shapes.
- 16dc2703c541 16.0 cited
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Improve performance of ORDER BY / DISTINCT aggregates
- 1349d2790bf4 16.0 cited