[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)
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  Reporter:  strk     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 3.1.0
 Component:  postgis  |    Version:  master
Resolution:           |   Keywords:  upgrade
----------------------+---------------------------

Comment (by strk):

 According to a comment in postgis/postgis.sql.in, the ST_Union(geometry)
 aggregate was last changed in 2.5.0 (to use `internal` type), but as the
 _current_ definition of it does NOT make use of {{{
 pgis_geometry_union_transfn }}} anymore (but rather uses {{{
 pgis_geometry_accum_transfn }}}) the comment must be wrong !

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4639#comment:4>
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