[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
----------------------+---------------------------
  Reporter:  michal   |      Owner:  pramsey
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 3.1.5
 Component:  postgis  |    Version:  3.1.x
Resolution:  invalid  |   Keywords:
----------------------+---------------------------

Comment (by mdavis):

 Yes, the `ST_Union` documentation should mention that it does not sew
 lines, and have a link to `ST_LineMerge`.

 The reason for not sewing lines is that it is possible to merge the output
 lines together, but it isn't possible to unmerge them if they were
 returned as merged.  So the operations are more modular this way.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4991#comment:10>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.