@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 >> >
