[postgis-tickets] [PostGIS] #4639: Can't upgrade from 3.0.0alpha3 to 3.1.0dev (cannot drop function pgis_geometry_union_transfn)

[PostGIS]

#4639: Can't upgrade from 3.0.0alpha3 to 3.1.0dev (cannot drop function
pgis_geometry_union_transfn)
---------------------+---------------------------
 Reporter:  strk     |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  blocker  |  Milestone:  PostGIS 3.1.0
Component:  postgis  |    Version:  master
 Keywords:  upgrade  |
---------------------+---------------------------
 {{{
 strk=# select postgis_full_version();
 POSTGIS="3.1.0dev r3.1.0alpha1-7-g9a939fdae" [EXTENSION] PGSQL="96"
 GEOS="3.9.0dev-CAPI-1.14.0" SFCGAL="1.3.6" PROJ="7.0.0" GDAL="GDAL 3.0.4,
 released 2020/01/28" LIBXML="2.9.4" LIBJSON="0.12.1" LIBPROTOBUF="1.2.1"
 WAGYU="0.4.3 (Internal)" (core procs from "3.0.0alpha3dev r17535" need
 upgrade) TOPOLOGY (topology procs from "3.0.0alpha5dev r17729" need
 upgrade) [UNPACKAGED!] RASTER (raster procs from "3.0.0alpha3dev r17535"
 need upgrade) (sfcgal procs from "3.0.0alpha3dev r17535" need upgrade)
 strk=# ALTER EXTENSION postgis UPDATE TO "3.1.0dev";
 ERROR:  cannot drop function
 pgis_geometry_union_transfn(internal,geometry) because other objects
 depend on it
 DETAIL:  function st_union(geometry) depends on function
 pgis_geometry_union_transfn(internal,geometry)
 HINT:  Use DROP ... CASCADE to drop the dependent objects too.
 }}}

 See also #4483 (please let's fix upgrade issues!)

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4639>
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