[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):

 A possible option could be: drop CASCADE the function _before_ the
 upgrade, and make sure AGGREGATEs are added if missing ( no matter _when_
 they were changed )

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4639#comment:6>
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