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From: Richard Guo <[email protected]>
To: SATYANARAYANA NARLAPURAM <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Peter Eisentraut <[email protected]>
Subject: Re: Bug: Rule actions see wrong values for generated columns (NEW.gen reads OLD value)
Date: Mon, 13 Apr 2026 11:35:52 +0900
Message-ID: <CAMbWs4-SJ6B26ciFu_K_2M1ObDA=GirV87N1BKeAtSRmQGATUA@mail.gmail.com> (raw)
In-Reply-To: <CAHg+QDexGTmCZzx=73gXkY2ZADS6LRhpnU+-8Y_QmrdTS6yUhA@mail.gmail.com>
References: <CAHg+QDexGTmCZzx=73gXkY2ZADS6LRhpnU+-8Y_QmrdTS6yUhA@mail.gmail.com>

On Mon, Apr 13, 2026 at 10:59 AM SATYANARAYANA NARLAPURAM
<[email protected]> wrote:
> NEW.<generated_coulmn> is resolved to the OLD row's value
> for update or NULL for insert cases in a DO ALSO rule action for
> generated columns.  This bug affects both stored and virtual
> generated columns. Reporting here to see if this is a known issue
> with generated columns.

I didn't find related item in open items.  This does not seem to be a
known issue.  I think we should fix it anyway.

cc-ing Peter.

- Richard

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  Subject: Re: Bug: Rule actions see wrong values for generated columns (NEW.gen reads OLD value)
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