Tom Lane wrote:
Gaetano Mendola <[EMAIL PROTECTED]> writes:

The select take long:
Postgres7.3.3:  average 4000 ms
Postgres7.4b2:  average 2600 ms
you can experiment your self with the dump that I gave you


Hm.  I tried to duplicate your results.  I'm getting about 5400 msec
versus 4200 msec, which is a nice version-to-version improvement but
not as large as you're seeing.  (I have --enable-cassert on, though,
and that may be cancelling some of the percentage gain.)

May be, I have the --enable-cassert off.


What about the wrong row expected ?
Anyway if the rows expected are 400 ( instead of 43 ) why not an index scan, with 400 rows on 1500000 seems a good choise do an index scan, isn't it ?



Regards Gaetano Mendola



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