Tom Lane wrote:
It looks like you have a stale plan for that ON DELETE SET NULL
constraint. Was there perhaps an index on operator_id that you removed?
Postgres is not very good about flushing cached plans when you change
table schemas (something I hope will be fixed in 8.3).
If that is the problem, starting a fresh session would be enough to take
care of it.
regards, tom lane
Thanks Tom. You were, as usual, correct!
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