SET enable_indexscan TO OFF;
SET

EXPLAIN ANALYZE SELECT  ani from trx_8 group by ani;
                                                     QUERY PLAN
--------------------------------------------------------------------------------------------------------------------
 HashAggregate  (cost=8668.54..8668.56 rows=2 width=8) (actual
time=1658.423..1658.427 rows=2 loops=1)
   ->  Seq Scan on trx_8  (cost=0.00..7778.83 rows=355883 width=8) (actual
time=0.011..728.418 rows=355883 loops=1)
 Total runtime: 1658.680 ms
(3 rows)


No veo diferencia.

2009/8/27 Jaime Casanova <jcasa...@systemguards.com.ec>

> SET enable_indexscan TO OFF;




-- 
Sebastian Machuca
Estudiante Ingeniería Civil en Computación
+56 9 77449117
Sent from Providencia, RM, Chile

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