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Regina Obe authored
put back old sfcgal test (except use \i, and have the query be what was in sfcgal one), the sfcgal one was different Closes #4131 Revise ST_ConcaveHull to use ST_UnaryUnion(ST_Collect..) (cause I know sfcgal doesn't replace with it's own implementation / a bit of a cheat) Take out some ST_Union calls I think are over compensating. References #3638 git-svn-id: http://svn.osgeo.org/postgis/trunk@16659 b70326c6-7e19-0410-871a-916f4a2858ee
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