| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Erik Sjoblom <sjoblom65(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Unexpected table size usage for small composite arrays |
| Date: | 2024-10-22 23:49:28 |
| Message-ID: | CAKFQuwY47deTv+txZvETGmtsdHUUDQ0aD3y3W1OMLDPrTcGTvA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Oct 22, 2024 at 4:42 PM David G. Johnston <
david(dot)g(dot)johnston(at)gmail(dot)com> wrote:
> On Tue, Oct 22, 2024 at 4:40 PM Erik Sjoblom <sjoblom65(at)gmail(dot)com> wrote:
>
>> I hear what you are saying Tom and what I have read says that it would
>> take 24 + 12 x N bytes for the array.
>>
>
> Whatever you are reading, or your interpretation of it, is flawed.
>
Since you are posting to -hackers anyway (not that figuring this out from
the user-facing documentation seems easy if possible at all...) here is
what Tom is referring to.
David J.
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