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--></style></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Cedric,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Good news. I was able to replicate.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I noticed in your output you have the fully qualified type name, which means you don’t have postgis schema in your search path.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To replicate I did:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>set search_path='pg_catalog';<o:p></o:p></p><p class=MsoNormal>SELECT 'POINT EMPTY'::public.geometry = 'POINT EMPTY'::public.geometry;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Gives:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>ERROR: operator is not unique: public.geometry = public.geometry LINE 1: SELECT 'POINT EMPTY'::public.geometry = 'POINT EMPTY'::publi... ^<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So I’m guessing we have some code in our = path that is not schema qualified.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve ticketed the issue here:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a href="https://trac.osgeo.org/postgis/ticket/6033">https://trac.osgeo.org/postgis/ticket/6033</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Paul,<o:p></o:p></p><p class=MsoNormal>Can you confirm you can replicate by changing your search_path?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><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'> Cedric Duprez <cedric.duprez@ign.fr> <br><b>Sent:</b> Thursday, January 8, 2026 12:05 PM<br><b>To:</b> Regina Obe <lr@pcorp.us>; 'Paul Ramsey' <pramsey@cleverelephant.ca><br><b>Cc:</b> postgis-users@lists.osgeo.org<br><b>Subject:</b> Re: PostGIS 3.6.1 - ERROR: operator is not unique: public.geometry = public.geometry<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>I get two lines with the following query:<br><br>SELECT oprcode, <a href="oprleft::regtype">oprleft::regtype</a>, <a href="oprright::regtype">oprright::regtype</a><br>FROM pg_catalog.pg_operator<br>WHERE oprname = '=' AND <a href="oprleft::regtype::text">oprleft::regtype::text</a> IN('public.geometry', 'public.geography')<br>ORDER BY oprleft, oprright;<br><br>Query result:<br><br>oprcode |oprleft |oprright <br>-------------------+----------------+----------------<br>public.geometry_eq |public.geometry |public.geometry <br>public.geography_eq|public.geography|public.geography<br><br>Extensions are :<br><br>extname |extversion<br>------------------+----------<br>plpgsql |1.0 <br>ogr_fdw |1.1 <br>plr |8.4.8.2 <br>pg_stat_statements|1.11 <br>pgcrypto |1.3 <br>tablefunc |1.0 <br>postgis_raster |3.6.1 <br>postgis |3.6.1 <o:p></o:p></p><div><p class=MsoNormal>Le 08/01/2026 à 17:58, Regina Obe a écrit :<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>I can’t replicate on my PostgreSQL 17.7 either even with upgrading from PostGIS 3.5.3 to 3.6.1<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>PostgreSQL 17.7 on x86_64-windows, compiled by msvc-19.44.35221, 64-bit POSTGIS="3.6.1 3.6.1" [EXTENSION] PGSQL="170" GEOS="3.14.1-CAPI-1.20.5" PROJ="8.2.1 NETWORK_ENABLED=OFF URL_ENDPOINT=<a href="https://cdn.proj.org">https://cdn.proj.org</a> USER_WRITABLE_DIRECTORY=<a href="file:///C:/Windows/ServiceProfiles/NetworkService/AppData/Local/proj">C:\Windows\ServiceProfiles\NetworkService\AppData\Local/proj</a> DATABASE_PATH=<a href="file:///C:/Program">C:\Program</a> Files\PostgreSQL\18\share\contrib\postgis-3.6\proj\proj.db" (compiled against PROJ 8.2.1) LIBXML="2.12.5" LIBJSON="0.12" LIBPROTOBUF="1.2.1" WAGYU="0.5.0 (Internal)"<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Perhaps you are having a conflict with another extension or it’s issue with upgrade from earlier. I recall we did have to fix an issue with = <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Can you show what the below queries output:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>SELECT oprcode, <a href="oprleft::regtype">oprleft::regtype</a>, <a href="oprright::regtype">oprright::regtype</a> <o:p></o:p></p><p class=MsoNormal>FROM pg_catalog.pg_operator <o:p></o:p></p><p class=MsoNormal>WHERE oprname = '=' AND <a href="oprleft::regtype::text">oprleft::regtype::text</a> IN('geometry', 'geography')<o:p></o:p></p><p class=MsoNormal>ORDER BY oprleft, oprright;<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Should be:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> oprcode | oprleft | oprright<o:p></o:p></p><p class=MsoNormal>--------------+-----------+-----------<o:p></o:p></p><p class=MsoNormal>geometry_eq | geometry | geometry<o:p></o:p></p><p class=MsoNormal>geography_eq | geography | geography<o:p></o:p></p><p class=MsoNormal>(2 rows)<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>SELECT extname, extversion FROM pg_catalog.pg_extension;<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><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 via postgis-users <a href="mailto:postgis-users@lists.osgeo.org"><postgis-users@lists.osgeo.org></a> <br><b>Sent:</b> Thursday, January 8, 2026 11:26 AM<br><b>To:</b> Cedric Duprez <a href="mailto:cedric.duprez@ign.fr"><cedric.duprez@ign.fr></a><br><b>Cc:</b> <a href="mailto:postgis-users@lists.osgeo.org">postgis-users@lists.osgeo.org</a><br><b>Subject:</b> Re: PostGIS 3.6.1 - ERROR: operator is not unique: public.geometry = public.geometry</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal>This is odd, I am not able to replicate...<o:p></o:p></p><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<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">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)<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Is this a database that has gone through upgrade stages, or a blank fresh database?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>P<o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><div><div><p class=MsoNormal>On Thu, Jan 8, 2026 at 8:21<span style='font-family:"Arial",sans-serif'> </span>AM Cedric Duprez <<a href="mailto:cedric.duprez@ign.fr">cedric.duprez@ign.fr</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><p class=MsoNormal>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" 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 <o:p></o:p></p></div></blockquote></div></div></blockquote><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>