Gabriele Turchi wrote:
> Il giorno sab, 15/07/2006 alle 13.04 -0700, Joe Conway ha scritto:
>>Why not just periodically (once an hour?) run "ANALYZE registrazioni;"
>>during the day. This will only update the statistics, and should be very
> This is my "solution" too... but: is enough? Or else: there is a better
> way to do this? If the performance in the better case is 50 times faster
> than the worse case, during an hour (50/100 record inserted in
> "registrazioni") how much the performance can fall before the new
> "ANALYZE" is run? Otherwise, running ANALYZE more frequently can badly
> affect the overall performance?
One thing I noticed is that in both plans there is a seq scan on
registrazioni. Given that performance degrades so quickly as records are
inserted into registrazioni, I'm wondering if you're missing an index.
What indexes do you have on registrazioni?
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