<div dir="auto"><div dir="auto"><div>@paul, you have not the exact same version of PostGIS and therefore of GEOS and PROJ. </div><div dir="auto">Maybe the origin of the non reproductibility ? </div><div dir="auto"><br></div><div dir="auto">Best regards</div><div dir="auto">Arthur</div><div dir="auto"><br></div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le jeu. 8 janv. 2026, 17:26, Paul Ramsey via postgis-users <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank" rel="noreferrer">postgis-users@lists.osgeo.org</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">This is odd, I am not able to replicate...<div><br></div><div>--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br> POSTGIS="3.6.1dev 3.6.0-6-gdb18a9a49" PGSQL="180" GEOS="3.15.0dev-CAPI-1.21.0" PROJ="9.3.0 NETWORK_ENABLED=ON URL_ENDPOINT=<a href="https://cdn.proj.org" rel="noreferrer noreferrer" target="_blank">https://cdn.proj.org</a> USER_WRITABLE_DIRECTORY=/Users/pramsey/Library/Application Support/proj DATABASE_PATH=/usr/local/share/proj/proj.db" (compiled against PROJ 9.3.0) LIBXML="2.9.13" LIBJSON="0.17" LIBPROTOBUF="1.4.1" WAGYU="0.5.0 (Internal)"<br>(1 row)<br><br>postgis_reg=# SELECT 'POINT EMPTY'::public.geometry = 'POINT EMPTY'::public.geometry;<br> ?column? <br>----------<br> t<br>(1 row)<br></div><div><br></div><div><br></div><div>Is this a database that has gone through upgrade stages, or a blank fresh database?</div><div><br></div><div>P</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jan 8, 2026 at 8:21 AM Cedric Duprez <<a href="mailto:cedric.duprez@ign.fr" rel="noreferrer noreferrer" target="_blank">cedric.duprez@ign.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><u></u>
<div>
Hi all,<br>
<br>
I'm facing a potential bug with PostGIS 3.6.1 on PostgreSQL 17.7.<br>
Here is what I get with postgis_full_version() : POSTGIS="3.6.1
f533623" [EXTENSION] PGSQL="170" GEOS="3.12.1-CAPI-1.18.1"
PROJ="9.4.0 NETWORK_ENABLED=OFF URL_ENDPOINT=<a href="https://cdn.proj.org" rel="noreferrer noreferrer" target="_blank">https://cdn.proj.org</a>
USER_WRITABLE_DIRECTORY=/tmp/proj
DATABASE_PATH=/usr/share/proj/proj.db" (compiled against PROJ 9.4.0)
GDAL="GDAL 3.8.4, released 2024/02/08" LIBXML="2.9.14"
LIBJSON="0.17" LIBPROTOBUF="1.4.1" WAGYU="0.5.0 (Internal)" RASTER<br>
<br>
When I execute this query: <br>
SELECT 'POINT EMPTY'::public.geometry = 'POINT
EMPTY'::public.geometry;<br>
I get the following error:<br>
ERROR: operator is not unique: public.geometry = public.geometry<br>
<br>
It seems to be a regression, since I didn't have this error on
previous versions of PostGIS (3.5).<br>
<br>
How can this problem be solved?<br>
Thanks in advance for you help,<br>
<br>
Cedric</div></blockquote></div></blockquote></div><div data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><table style="font-family:trebuchet ms,tahoma,sans-serif;font-size:11px;line-height:11px;color:rgb(76,0,151);margin:10px 0px;border-spacing:0px;border:1px solid rgb(238,237,237)">
<tbody>
<tr style="height:15px">
<td colspan="3"></td></tr>
</tbody>
</table></div></div></div></div>