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<p class="MsoNormal"><span style="font-size:11.0pt">Thank you!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Paul Ramsey <pramsey@cleverelephant.ca>
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<b>Sent:</b> Friday, January 30, 2026 11:42 AM<br>
<b>To:</b> Michael Downey <mdowney@esri.com><br>
<b>Cc:</b> postgis-users@lists.osgeo.org<br>
<b>Subject:</b> 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."<o:p></o:p></span></p>
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<p class="MsoNormal">That phrase is no longer in the doco, looks like it got fixed after 3.2 release.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Jan 30, 2026 at 11:39<span style="font-family:"Arial",sans-serif"> </span>AM Michael Downey <<a href="mailto:mdowney@esri.com">mdowney@esri.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Thanks!</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Paul Ramsey <<a href="mailto:pramsey@cleverelephant.ca" target="_blank">pramsey@cleverelephant.ca</a>>
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<b>Sent:</b> Friday, January 30, 2026 11:38 AM<br>
<b>To:</b> Michael Downey <<a href="mailto:mdowney@esri.com" target="_blank">mdowney@esri.com</a>><br>
<b>Cc:</b> <a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a><br>
<b>Subject:</b> 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."</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">PostGIS 2.0? 14 years ago<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://urldefense.com/v3/__https:/github.com/postgis/postgis/blob/master/NEWS*L1937__;Iw!!CKZwjTOV!3yYvUnUVO6JZpb3quhgJNZvGxIrrJ-8WLx1ZqGThN6rLytjb8XDhluBJKpOw_nLJxA8tmDouYe0kH_nLz0NQQA$" target="_blank">https://github.com/postgis/postgis/blob/master/NEWS#L1937
[github.com]</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Wheeps, that's a long-time doo error.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">P.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Fri, Jan 30, 2026 at 11:31<span style="font-family:"Arial",sans-serif"> </span>AM Michael Downey via postgis-users <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a>>
wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Hello,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">I see this note
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">“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</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"><a href="https://urldefense.com/v3/__https:/postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html__;!!CKZwjTOV!3yYvUnUVO6JZpb3quhgJNZvGxIrrJ-8WLx1ZqGThN6rLytjb8XDhluBJKpOw_nLJxA8tmDouYe0kH_kQKNXXQA$" target="_blank">https://postgis.net/docs/manual-3.2/PostGIS_Special_Functions_Index.html
[postgis.net]</a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Since then it is not there.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">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.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Perhaps it started at an earlier time and culminated at 3.3?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Michael</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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