Palle Girgensohn <[EMAIL PROTECTED]> writes:
> How do you mean they look far off?

>  Seq Scan on group_data  (cost=0.00..47544.43 rows=114164 width=43) (actual 
> time=114.015..1334.479 rows=4 loops=1)

114164 estimated vs 4 actual rows is pretty far off.  Perhaps something
skewed about the data distribution?

> If you want, I can send you the data.

If it's not too huge, sure, send it to me off-list.

                        regards, tom lane

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