Jean-Paul ARGUDO <jean-paul.argudo@idealx.com> writes:
> EXPLAIN SELECT t12_bskid, t12_pnb, t12_lne, t12_tck
> FROM T12_20011231
> WHERE t12_bskid >= 1
> ORDER BY t12_bskid, t12_pnb, t12_tck, t12_lne;
> Sort (cost=3006.13..3006.13 rows=25693 width=46)
> -> Seq Scan on t12_20011231 (cost=0.00..1124.20 rows=25693 width=46)
> => Uh? Seq scan cheaper than index???
For that kind of query, very probably. How much of the table is
actually selected by "WHERE t12_bskid >= 1"?
regards, tom lane