| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Peter Eisentraut <peter(at)eisentraut(dot)org>, Joe Conway <mail(at)joeconway(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: Making type Datum be 8 bytes everywhere |
| Date: | 2025-08-12 16:20:58 |
| Message-ID: | 3390698.1755015658@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2025-08-12 08:30:43 +0200, Peter Eisentraut wrote:
>> I'm also thinking, as a follow-on project, we could get rid of typbyval and
>> require that typbyval == (typlen > 0 && typlen <= 8). Something to think
>> about.
> We currently have types that aren't typbyval despite fitting those criteria:
We could change those three if we had a mind to. Changing TID would
probably risk some bugs, but we pass it around enough in UPDATE/DELETE
that making it typbyval would surely buy some small performance win.
(I doubt anyone would notice about the macaddr types though.)
However, I'm really hesitant to start enforcing such a thing against
user-defined types. I think that would translate to breaking some
extensions in return for not much.
regards, tom lane
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