Tom Lane wrote:
I'm kind of leaning to the separate-tally method and abandoning the
assumption that the identities hold.  I'm not wedded to the idea
though.  Any thoughts?

That seems like the best approach to me. Like the scan/fetch counters, n_tup_ins and n_tup_del represent work done regardless of commit/rollback, but n_live_tup and n_dead_tup represent the current state of the table.

  Heikki Linnakangas

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