Re: SQL Property Graph Queries (SQL/PGQ)

From: Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>
To: zengman <zengman(at)halodbtech(dot)com>
Cc: Peter Eisentraut <peter(at)eisentraut(dot)org>, pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: SQL Property Graph Queries (SQL/PGQ)
Date: 2026-03-16 16:28:47
Message-ID: CAExHW5tMRN16BuDu8_pT94cSTzYb1-jhSL=ZyiJcQyJZK=9jDQ@mail.gmail.com
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On Mon, Mar 16, 2026 at 8:39 PM zengman <zengman(at)halodbtech(dot)com> wrote:
>
> Hi,
>
> The commit 2f094e7ac691abc9d2fe0f4dcf0feac4a6ce1d9c delivers an excellent feature, and the file `rewriteGraphTable.c` was introduced as part of this commit.
> I've noticed that this code file could benefit from some tidying up, so please review the diff file attached below.
> This diff only includes **basic cleanup** of `rewriteGraphTable.c` – it’s just a simple pass,
> and there may be other minor omissions that haven’t been addressed yet.

Hi Man,
Thanks for the patch. I reviewed the cleanup you propose. Most of the
changes look good to me, except the changes related to pstate. We have
both patterns in the code, one which uses free_parsestate() explicitly
and another that doesn't. In this case, we don't set
p_target_relation, and we don't touch p_next_resno. So the only thing
that free_parsestate() does it to free pstate, which will taken care
of by the memory context management. So not needed. Any other reason
you want to call free_parsestate() explicitly?

Attached patch has changes other that pstate related changes.

I think, Peter may want to collect more such changes before applying them.

--
Best Wishes,
Ashutosh Bapat

Attachment Content-Type Size
cleanup_rewrite_graphtable.patch.no_cibot application/octet-stream 3.3 KB

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