[postgis-tickets] [PostGIS] #4386: [upgrade] ERROR: cannot drop function st_union(geometry) because other objects depend on it

[PostGIS]

#4386: [upgrade] ERROR: cannot drop function st_union(geometry) because other
objects depend on it
-----------------------------------+---------------------------
 Reporter:  strk                   |      Owner:  komzpa
     Type:  defect                 |     Status:  assigned
 Priority:  blocker                |  Milestone:  PostGIS 3.0.0
Component:  build/upgrade/install  |    Version:  trunk
 Keywords:                         |
-----------------------------------+---------------------------
 Upgrades from 2.5 or in-dev are broken due to change in ST_Union
 signature.

 See https://dronie.osgeo.org/postgis/postgis/241/3/2 which is building a
 PR adding ad-hoc testing for this case:
 https://git.osgeo.org/gitea/postgis/postgis/pulls/30

 The signature of aggregate was changed by Komzpa to raise limit of 2G for
 usage: https://trac.osgeo.org/postgis/ticket/4340

 Suggestions were provided to avoid this upgrade failure in the
 corresponding PR: https://github.com/postgis/postgis/pull/394

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4386>
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