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help / color / mirror / Atom feedFrom: Dean Rasheed <[email protected]>
To: Yugo Nagata <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: [email protected]
Subject: Re: Allow to collect statistics on virtual generated columns
Date: Tue, 24 Mar 2026 11:43:47 +0000
Message-ID: <CAEZATCUR5B=6M7H2bwRU0_6FrbSE8yHe_+9bTbRUdU=jE33yog@mail.gmail.com> (raw)
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On Tue, 24 Mar 2026 at 10:57, Yugo Nagata <[email protected]> wrote:
>
> One concern is that CREATE STATISTICS does not allow creating extended
> statistics on a single colmun. If we try this, it raises the following error:
>
> ERROR: extended statistics require at least 2 columns
>
> Therefore, if we take this approach, we would need to add an exception
> to this rule for virtual columns.
I think that would be fine. It makes sense because a virtual column
expands to an expression, and we already allow CREATE STATISTICS on a
single expression.
Regards,
Dean
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Subject: Re: Allow to collect statistics on virtual generated columns
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