[postgis-tickets] [PostGIS] #4908: ST_AsGeoJSON in POSTGIS-2.5 different than ST_AsGeoJSON in POSTGIS-3.0

[PostGIS]

#4908: ST_AsGeoJSON in POSTGIS-2.5 different than ST_AsGeoJSON in POSTGIS-3.0
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  Reporter:  maheshpusala  |      Owner:  pramsey
      Type:  defect        |     Status:  new
  Priority:  high          |  Milestone:  PostGIS 3.1.2
 Component:  postgis       |    Version:  2.5.x
Resolution:                |   Keywords:
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Comment (by mdavis):

 Actually it might be that with the improvements to floating-point output
 in 3.0 the `ST_AsGeoJSON` default for precision (9 decimal digits) is now
 working (whereas before it was just outputting full precision).

 This is effectively a regression. Also, it shows how having an output
 precision less than "full" can cause unexpected loss of data.  Most other
 text output functions use precision=15 as their default.  We should
 consider changing `ST_AsGeoJSON` to use this valud as well.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4908#comment:5>
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