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From: David G. Johnston <[email protected]>
To: Hongxu Ma <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: PSQL error: total cell count of XXX exceeded
Date: Fri, 25 Aug 2023 21:09:28 -0700
Message-ID: <CAKFQuwYfypo7hMXs8a7Ccx4x2bv1XKCMu=pOoQAfq_0Fpu7YQQ@mail.gmail.com> (raw)
In-Reply-To: <TYBP286MB0351B057B101C90D7C1239E6B4E2A@TYBP286MB0351.JPNP286.PROD.OUTLOOK.COM>
References: <TYBP286MB0351B057B101C90D7C1239E6B4E2A@TYBP286MB0351.JPNP286.PROD.OUTLOOK.COM>

On Friday, August 25, 2023, Hongxu Ma <[email protected]> wrote:
>
>
> When I tried to select a big amount of rows, psql complains a error "Cannot
> add cell to table content: total cell count of 905032704 exceeded."
>
>  We should use long for ncolumns and nrows and give a more obvious error
> message here.
>
> Any thoughts? or some other hidden reasons?
>

9 millions cells seems more than realistic a limit for a psql query result
output.  In any case it isn’t a bug, the code demonstrates that fact by
producing an explicit error.

I wouldn’t be adverse to an improved error message, and possibly
documenting said limit.

David J.


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