[postgis-tickets] [PostGIS] #4991: st_union of single row should keep the row intact

[PostGIS]

#4991: st_union of single row should keep the row intact
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  Reporter:  michal   |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.1.5
 Component:  postgis  |    Version:  3.1.x
Resolution:           |   Keywords:
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Comment (by michal):

 using `st_memunion` instead of `st_union` does not produce a
 multilinestring but a proper linestring (at least in the above example).

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4991#comment:1>
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