[postgis-tickets] [PostGIS] #3821: Don't drop st_union when updating postgis extension to 2.4

[PostGIS]

#3821: Don't drop st_union when updating postgis extension to 2.4
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  Reporter:  nextstopsun  |      Owner:  robe
      Type:  defect       |     Status:  new
  Priority:  medium       |  Milestone:  PostGIS 2.5.0
 Component:  postgis      |    Version:  2.3.x
Resolution:               |   Keywords:
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Comment (by nextstopsun):

 Thanks robe and strk, I've managed to update extension with commenting out
 st_union and setting parallel safe manually in pg_proc. What is so unholy
 in updating catalog anyway?
 Could the update script detect if it's just this `proparallel` column
 needs to be changed and change it instead of dropping and recreating the
 aggregate? AFAIK function signature didn't change, so no really need to
 drop.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3821#comment:16>
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