| From: | Vik Fearing <vik(dot)fearing(at)2ndquadrant(dot)com> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Gajus Kuizinas <gajus(at)gajus(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: IMMUTABLE and PARALLEL SAFE function markings |
| Date: | 2018-11-27 00:11:50 |
| Message-ID: | c3fe8572-197b-1b88-a7ba-8501625d3ac2@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 27/11/2018 01:10, Stephen Frost wrote:
> Greetings,
>
> * Vik Fearing (vik(dot)fearing(at)2ndquadrant(dot)com) wrote:
>> On 27/11/2018 01:05, Stephen Frost wrote:
>>> That said, I do *not* think we should make any assumptions here- users
>>> incorrectly mark things all the time but we shouldn't encourage that and
>>> we shouldn't assume that functions marked as immutable are parallel
>>> safe.
>>
>> Does that mean we also shouldn't assume that functions marked as
>> immutable are index safe?
>
> We've got an index safe flag?
Yes. It's called provolatile='i'.
> That's news to me.
>
> Thanks!
You're welcome.
--
Vik Fearing +33 6 46 75 15 36
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
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