Christophe Pettus <xof@thebuild.com> writes:
> On Aug 13, 2012, at 7:11 PM, Tom Lane wrote:
>> The whole thing looks a bit weird to me --- why did it not use a
>> nestloop join with inner indexscan on charlie? With 7000 rows on the
>> other side, the estimated cost for that shouldn't have been more than
>> about 30000 ...
> Here's the same query with set enable_megejoin = off. All of the other query tuning parameters are default.
> http://explain.depesz.com/s/dqO
Maybe you had better show us the actual query, and the table/index
definitions. Because it's sure making odd choices here. This seems
like the wrong join order altogether ...
regards, tom lane