Re: [PATCH] Add pg_get_table_ddl() to reconstruct CREATE TABLE statements

From: Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>
To: Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com>
Cc: Zsolt Parragi <zsolt(dot)parragi(at)percona(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: [PATCH] Add pg_get_table_ddl() to reconstruct CREATE TABLE statements
Date: 2026-06-23 02:18:11
Message-ID: 6ADD1776-F3E4-4BCD-B569-17A61AD411D1@gmail.com
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> On Jun 22, 2026, at 22:11, Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
>
>
>
> On Mon, Jun 22, 2026 at 7:30 PM Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com> wrote:
>
>
> > On Jun 22, 2026, at 20:40, Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
> >
> > You're right, and thanks for spotting this. The existing pattern in pg_proc.dat for variadic-text functions (e.g., jsonb_delete, json_extract_path) uses _text at the variadic position in both proargtypes and proallargtypes, with provariadic => 'text'. That is the convention documented by the sanity check in src/test/regress/sql/opr_sanity.sql.
> >
> > The same issue applies to pg_get_role_ddl, pg_get_tablespace_ddl (both variants), and pg_get_database_ddl, but that will require a separate patch.
> >
>
> Thanks for confirming. Then I will file a patch tomorrow to fix those.
>
> I started working on it, but if you want to take the lead, just let me know and I won't send my version over
>

The changes to pg_proc.dat have been in my local tree for some time. Today I also fixed the sanity check in opr_sanity so that it can now report this mismatch. Could you please take a look at my patch [1]?

[1] https://www.postgresql.org/message-id/D41A334E-ED9E-42EE-830D-28D4D36E9317%40gmail.com

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/

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