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$> Wheeps, that's a long-time doo error. P. On Fri, Jan 30, 2026 at 11:31 AM Michael Downey via postgis-users <[email protected]<mailto:[email protected]>> wrote: Hello, I see this note “SQL-MM defines the default SRID of all geometry constructors as 0. PostGIS uses a default SRID of -1" on the PostGIS_Special_Functions_Index.html page all the way though 3.2 https://postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html [postgis.net]<https://urldefense.com/v3/__https:/postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html__;!!CKZwjTOV!3yYvUnUVO6JZpb3quhgJNZvGxIrrJ-8WLx1ZqGThN6rLytjb8XDhluBJKpOw_nLJxA8tmDouYe0kH_kQKNXXQA$> 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
