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help / color / mirror / Atom feedFrom: Dilip Kumar <[email protected]>
To: Hannu Krosing <[email protected]>
Cc: Amit Kapila <[email protected]>
Cc: Masahiko Sawada <[email protected]>
Cc: Vitaly Davydov <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: Support logical replication of DDLs, take2
Date: Wed, 29 Apr 2026 16:59:26 +0530
Message-ID: <CAFiTN-tPHaHRybrxJumKgMinhNE78bL2wXouPzH_vXnVnBsYYg@mail.gmail.com> (raw)
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On Wed, Apr 29, 2026 at 1:37 PM Hannu Krosing <[email protected]> wrote:
>
> On Wed, Apr 29, 2026 at 5:39 AM Dilip Kumar <[email protected]> wrote:
> > Another question is
> > what we would do with those deparsed representations: will we convert
> > them to SQL on the subscriber and execute, or do something else?
>
> Current pg_dump approach is logically equivalent to "doing it on the
> subscriber", pg_dump is designed to dump schemas from all older
> database versions in format that is compatible with the version the
> pg_dump is written for.
IIUC, you're suggesting a pg_dump-style mechanism for SQL generation
from the catalog. My concern is that pg_dump is snapshot-based, while
decoding is incremental. So how to we generate SQL from the catalog
for incremental changes(like an ALTER TABLE...SET DATA TYPE)?
--
Regards,
Dilip Kumar
Google
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Subject: Re: Support logical replication of DDLs, take2
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