I just realized there's a further problem in the area: when a partition
is detached from its parent, its indexes are not made independent of the
indexes on parent. So they can't be dropped on their own (booh!); and
dropping the index on the former parent partitioned table drops the
index on the former partition also (hiss!). I think the fix for this is
to delete all dependencies, and re-register normal ones. Should be
straightforward, but I'm not doing it this year.
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Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services