That phrase is no longer in the doco, looks like it got fixed after 3.2
release.

On Fri, Jan 30, 2026 at 11:39 AM Michael Downey <[email protected]> wrote:

> Thanks!
>
>
>
> *From:* Paul Ramsey <[email protected]>
> *Sent:* Friday, January 30, 2026 11:38 AM
> *To:* Michael Downey <[email protected]>
> *Cc:* [email protected]
> *Subject:* Re: When did this 'officially' change? "SQL-MM defines the
> default SRID of all geometry constructors as 0. PostGIS uses a default SRID
> of -1."
>
>
>
> PostGIS 2.0? 14 years ago
>
>
>
> https://github.com/postgis/postgis/blob/master/NEWS#L1937 [github.com]
> <https://urldefense.com/v3/__https:/github.com/postgis/postgis/blob/master/NEWS*L1937__;Iw!!CKZwjTOV!3yYvUnUVO6JZpb3quhgJNZvGxIrrJ-8WLx1ZqGThN6rLytjb8XDhluBJKpOw_nLJxA8tmDouYe0kH_nLz0NQQA$>
>
>
>
> Wheeps, that's a long-time doo error.
>
>
>
> P.
>
>
>
> On Fri, Jan 30, 2026 at 11:31 AM Michael Downey via postgis-users <
> [email protected]> wrote:
>
> Hello,
>
>
>
> I see this note
>
> “SQL-MM defines the default SRID of all geometry constructors as 0.
> PostGIS uses a default SRID of -1" on the
> PostGIS_Special_Functions_Index.html page all the way though 3.2
>
> https://postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html
> [postgis.net]
> <https://urldefense.com/v3/__https:/postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html__;!!CKZwjTOV!3yYvUnUVO6JZpb3quhgJNZvGxIrrJ-8WLx1ZqGThN6rLytjb8XDhluBJKpOw_nLJxA8tmDouYe0kH_kQKNXXQA$>
>
>
>
> Since then it is not there.
>
>
>
> I have not checked this question under versions < 3.4. AI results indicate
> that it was 3.0 when it started. A question from a user in our community
> indicates 2.0.
>
>
>
> Perhaps it started at an earlier time and culminated at 3.3?
>
>
>
> Thanks,
>
> Michael
>
>
>
>

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