Re: pg17 issues with not-null contraints

Alvaro Herrera <alvherre@alvh.no-ip.org>

From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Justin Pryzby <pryzby@telsasoft.com>
Cc: Kyotaro Horiguchi <horikyota.ntt@gmail.com>, pgsql-hackers@lists.postgresql.org
Date: 2024-04-16T18:25:53Z
Lists: pgsql-hackers
On 2024-Apr-15, Justin Pryzby wrote:

> Here's a couple more issues affecting upgrades from v16 to v17.
> 
> postgres=# CREATE TABLE a(i int NOT NULL); CREATE TABLE b(i int PRIMARY KEY) INHERITS (a);
> pg_restore: error: could not execute query: ERROR:  constraint "pgdump_throwaway_notnull_0" of relation "b" does not exist

This one requires a separate pg_dump fix, which should --I hope-- be
pretty simple.

> postgres=# CREATE TABLE a(i int CONSTRAINT a NOT NULL PRIMARY KEY); CREATE TABLE b()INHERITS(a); ALTER TABLE b ADD CONSTRAINT pkb PRIMARY KEY (i);
> pg_restore: error: could not execute query: ERROR:  cannot drop inherited constraint "pgdump_throwaway_notnull_0" of relation "b"

This one seems to be fixed with the patch I just posted.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"I am amazed at [the pgsql-sql] mailing list for the wonderful support, and
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Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Fix inconsistencies in error messages

  2. Fix restore of not-null constraints with inheritance

  3. Fix propagating attnotnull in multiple inheritance

  4. Doc: mention CREATE+ATTACH PARTITION with CREATE TABLE...PARTITION OF.

  5. Allow ATTACH PARTITION with only ShareUpdateExclusiveLock.