"Bryan White" <bryan(at)arcamax(dot)com> writes:
>> What does EXPLAIN tell you about how the queries are being executed?
>> Do you by any chance have the 6.5.3 system still available to compare
>> its EXPLAIN output?
> I can shuffle directories and reload under 6.5.3 but I need to wait until
> todays run of the report finishes. I got bit by the change in the default
> date format and had to run it again. As it is I won't be able to do this
> until the morning.
Don't worry about it. Now that I've seen the queries, I know that there
is only one query plan 6.5.3 could have used: seq-scan and sort. So
there's no need to reload 6.5.3 just to see its EXPLAIN output.
regards, tom lane