Hi all,
I'm quite puzzled by the following observation.
The behaviour is observed on a production system (Linux, PG 8.3.5)
and also on a test system (NetBSD 5.0.2, PG 8.4.2).
Normally the following Query behaves well:
select c.*, h.*
from Context c, Context_Hierarchy h
where c.Idx =
: (((h.hierarchyname)::text = $2) AND (h.parentidx = $3))
Total runtime: 50.064 ms
(7 rows)
And that is quite a bad plan given the current distribution of values.
Regards,
Rainer
Am 01.03.2010 17:15, schrieb Tom Lane:
Rainer Pruy rainer.p...@acrys.com writes:
Normally the following Query behaves well
for your help
in reminding me about obvious use of prepared statements.
Rainer
PS:
I've just read the thread on Avoiding bad prepared-statement plans.
Very interesting. Will track this...
Am 01.03.2010 19:15, wrote Tom Lane:
Rainer Pruy rainer.p...@acrys.com writes:
The prepared statement gives
