[postgis-tickets] [PostGIS] #4770: [raster] Calling st_union() with WINDOW PARTITION crashes server

[PostGIS]

#4770: [raster] Calling st_union() with WINDOW PARTITION crashes server
----------------------+---------------------------
  Reporter:  Robins   |      Owner:  robe
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 3.0.4
 Component:  raster   |    Version:  3.0.x
Resolution:           |   Keywords:  st_union
----------------------+---------------------------

Comment (by pramsey):

 Looking at some windows on numbers it looks like we are doing logically
 the same thing as the built-ins, so I guess this fix can go in.
 {{{
 WITH w AS (
   SELECT
     ST_Union(g) OVER (PARTITION BY a ORDER BY b) AS g,
     Sum(b) OVER (PARTITION BY a ORDER BY b) AS s
   FROM (VALUES ('POINT(0 0)'::geometry, 'A0006', 300), ('POINT(1
 1)'::geometry, 'A0006', 302)) t(g, a, b)
 )
 SELECT ST_AsText(g), s FROM w;

       st_astext      |  s
 ---------------------+-----
  POINT(0 0)          | 300
  MULTIPOINT(0 0,1 1) | 602
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4770#comment:10>
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