[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 2.4.0
 Component:  postgis      |    Version:  2.3.x
Resolution:               |   Keywords:
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Comment (by robe):

 confirmed no nulls in that column.

 {{{
 select * from pg_proc where proparallel is null
 }}}

 yields no records.

 From docs default for all aggs and functions is unsafe.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3821#comment:20>
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