Rickard =?iso-8859-1?b?U2r2c3Ry9m0=?= <[EMAIL PROTECTED]> writes:
> fast db:
> -------------------------
>  ->  Index Scan using testcase_b_bid_index on testcase  (cost=0.00..1656.82 
> rows=426 width=38) (never executed)"
> -------------------------

> slow db:
> -------------------------
> ->  Seq Scan on testcase  (cost=0.00..2896.42 rows=33242 width=64) (actual 
> time=77.027..791.014 rows=37093 loops=1)"
> -------------------------

Let's see the query and the *whole* explain analyze output, not the part
you (mistakenly) think is important.

                        regards, tom lane

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