[PostGIS] #5775: ST_AsGeoJSONAgg which is aggregate version of ST_AsGeoJSON

[PostGIS]

#5775: ST_AsGeoJSONAgg which is aggregate version of ST_AsGeoJSON
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  Reporter:  robe     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS Fund Me
 Component:  postgis  |    Version:  master
Resolution:           |   Keywords:
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Comment (by mdavis):

 Whatever happens about this, don't remove the ability to convert a
 geometry to a GeoJSON geometry object.  That is very useful, since it's
 doing a lot of work that other JSON generators can't do. It's used in
 `pg_featureserv` (for example).

 Possibly if we could do this over it would make sense to have an
 `ST_AsGeoJSONGeom` function that just handles geometry conversion (a la
 ST_AsMVTGeom`)
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5775#comment:5>
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