[postgis-tickets] [PostGIS] #4310: Improve MVT vectortile_layer_combine to remove duplicates

[PostGIS]

#4310: Improve MVT vectortile_layer_combine to remove duplicates
--------------------------+---------------------------
  Reporter:  Algunenano   |      Owner:  Algunenano
      Type:  enhancement  |     Status:  assigned
  Priority:  medium       |  Milestone:  PostGIS 3.0.0
 Component:  postgis      |    Version:  trunk
Resolution:               |   Keywords:
--------------------------+---------------------------

Comment (by pramsey):

 I very much wanted to bring MVT into liblwgeom so all the testing could be
 in Cunit, but never did land those changes... it's somewhat large,
 involves an LWFEATURE concept so that whole rows can be passed over from
 the db side to the liblwgeom side, which also seems to unavoidably involve
 copying the attribute values once. So it's not ideal from a performance
 point-of-view, but would make testing way easier and allow some infra in
 the MVT/Geobuf code to be shared.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4310#comment:1>
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.