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From: Joel Jacobson <[email protected]>
To: pgsql-hackers <[email protected]>
Cc: Arne Roland <[email protected]>
Cc: Anders Granlund <[email protected]>
Cc: Andreas Karlsson <[email protected]>
Cc: Vik Fearing <[email protected]>
Subject: Re: Key joins
Date: Fri, 29 May 2026 09:45:17 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

On Fri, May 29, 2026, at 07:08, Joel Jacobson wrote:
> On Fri, May 29, 2026, at 00:13, Joel Jacobson wrote:
>> On Thu, May 28, 2026, at 20:47, Joel Jacobson wrote:
>>> Hi hackers,
>>>
>>> This patch implements a new SQL language feature, that we intent to
>>> submit as a Change Proposal to the WG 3 SQL committee for the next
>>> meeting in Stockholm in June.  We would greatly appreciate any feedback
>>> from the community.
> ...
>>> The attached Discussion paper has also been published at https://keyjoin.org
>>> with all examples in the paper runnable in the browser using a patched PGLite.

v4 is a small follow-up to fix a non-cassert build failure,
reported by cfbot on NetBSD/FreeBSD animals:

* 0002 removes assertion-only local variables in parse_key_join.c
  that triggered -Werror=unused-but-set-variable.

* 0001 and 0003 are unchanged from v3.

/Joel

Attachments:

  [application/x-gzip] v4-0003-Add-information_schema.view_constraint_usage.patch.gz (2.9K, ../[email protected]/2-v4-0003-Add-information_schema.view_constraint_usage.patch.gz)
  download

  [application/x-gzip] v4-0002-Implement-FOR-KEY-join-support.patch.gz (175.0K, ../[email protected]/3-v4-0002-Implement-FOR-KEY-join-support.patch.gz)
  download

  [application/x-gzip] v4-0001-Serialize-routine-definition-changes-with-depende.patch.gz (1.9K, ../[email protected]/4-v4-0001-Serialize-routine-definition-changes-with-depende.patch.gz)
  download

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