Bruce Momjian wrote:
>
> > *** Btw, why doesn't PG update statistics when inserting/updating?
>
> Too slow to do at that time. You need to span all the data to get an
> accurate figure.
Is it not possible to take the current statistics and the latest
changes and calculate new statistics from that?
What information is kept in these statistics? How are they used?
Obviously this is more than just number of rows, but what exactly?
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