Re: BUG #19407: pg_dump : DROP RULE creates forward references - Mailing list pgsql-bugs

From Nathan Bossart
Subject Re: BUG #19407: pg_dump : DROP RULE creates forward references
Date
Msg-id aY-Q4met3RVF08LP@nathan
Whole thread Raw
In response to BUG #19407: pg_dump : DROP RULE creates forward references  (PG Bug reporting form <noreply@postgresql.org>)
Responses Re: BUG #19407: pg_dump : DROP RULE creates forward references
List pgsql-bugs
On Fri, Feb 13, 2026 at 09:02:37AM +0000, PG Bug reporting form wrote:
> During dump / restore with pg_dump / psql, I encounter a dependency ordering
> issue that breaks the import when using ON_ERROR_STOP=on.
> 
> Problem: pg_dump executes DROP RULE for specific views, forcing them to be
> recreated before their dependencies (custom types, collations) exist in the
> dump file, causing import failures.

I think this is an even simpler reproducer:

    create type t as enum ('a', 'b');
    create table tt (a t primary key, b text);
    create view v as select * from tt group by a;

Commit d8c05aff56 [0] did some work in this area, but this issue may even
predate that.  In any case, it seems like pg_dump needs to create the type
before it creates the dummy view to deal with circular dependencies.

[0] https://postgr.es/m/flat/19092.1479325184%40sss.pgh.pa.us

-- 
nathan



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