[postgis-tickets] [PostGIS] #5237: postgis_extensions_upgrade fails with ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification

[PostGIS]

#5237: postgis_extensions_upgrade fails with ERROR: there is no unique or
exclusion constraint matching the ON CONFLICT specification
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  Reporter:  robe     |      Owner:  pramsey
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 3.3.2
 Component:  postgis  |    Version:  3.3.x
Resolution:  wontfix  |   Keywords:
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Comment (by robe):

 @strk it wasn't me.  The reporter was able to read the primary key to his
 system.  It was only one of his databases that had the issue.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5237#comment:13>
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