No, this is clearly a postgres/postgis thing, it doesn't hit on geos or proj code lines. I was testing with pg18, but I see now Regina has replicated on pg17 also, so that was the one thing I was working on clarifying in terms of reproduction.
P On Thu, Jan 8, 2026 at 8:54 AM Arthur Bazin <[email protected]> wrote: > @paul, you have not the exact same version of PostGIS and therefore of > GEOS and PROJ. > Maybe the origin of the non reproductibility ? > > Best regards > Arthur > > > > Le jeu. 8 janv. 2026, 17:26, Paul Ramsey via postgis-users < > [email protected]> a écrit : > >> This is odd, I am not able to replicate... >> >> >> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- >> 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= >> https://cdn.proj.org >> 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)" >> (1 row) >> >> postgis_reg=# SELECT 'POINT EMPTY'::public.geometry = 'POINT >> EMPTY'::public.geometry; >> ?column? >> ---------- >> t >> (1 row) >> >> >> Is this a database that has gone through upgrade stages, or a blank fresh >> database? >> >> P >> >> On Thu, Jan 8, 2026 at 8:21 AM Cedric Duprez <[email protected]> >> wrote: >> >>> Hi all, >>> >>> I'm facing a potential bug with PostGIS 3.6.1 on PostgreSQL 17.7. >>> 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=https://cdn.proj.org >>> 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 >>> >>> When I execute this query: >>> SELECT 'POINT EMPTY'::public.geometry = 'POINT EMPTY'::public.geometry; >>> I get the following error: >>> ERROR: operator is not unique: public.geometry = public.geometry >>> >>> It seems to be a regression, since I didn't have this error on previous >>> versions of PostGIS (3.5). >>> >>> How can this problem be solved? >>> Thanks in advance for you help, >>> >>> Cedric >>> >>
