Tom Lane wrote:
> OK, I'm a bit confused by the obfuscation here. The table with the
> duplicates is xxx, or qqq?
Yes, xxx is the broken table. The two rewrite rules map updates on a
view to an underlying table (the broken one).
Updates on the view occur very frequently. Perhaps 400,000 per day? And,
sadly, 200,000 of those on this one row.
> Which one is the trigger attached to?
> zzz is a view I suppose?
>
The trigger is attached to yet another table; when an insert or update
occurs in this third table, a date field on xxx is updated.
Updates/inserts on this happen less frequently -- perhaps low 10's of
thousands per day.
I had forgotten about the view/rewrite rules until I looked again at the
db source (I thought they were triggers). These are the source of 90% of
the updates.