am Tue, dem 23.01.2007, um 10:12:13 -0500 mailte Brandon Aiken folgendes:
> Out of curiosity, has the COUNT(*) with no WHERE clause slowness been
> fixed in 8.x? Or is it still an issue of "there's no solution that
> won't harm aggregates with WHERE clauses"?
I will try it:
scholl=# \timing
Timing is on.
scholl=# select count(1) from bde_meldungen ;
count
---------
1813210
(1 row)
Time: 1925.471 ms
scholl=*# select count(1) from bde_meldungen where datum = current_date-'1day'::interval;
count
-------
2694
(1 row)
Time: 5.670 ms
Btw: yes, the table has more rows than the table from the origin poster
and the count(1) is much faster. Perhaps he should show us an 'explain
analyse'. My guess: many dead tuples.
Andreas
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Andreas Kretschmer
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