QUERY PLAN
----------------------------------------------------------------------------------------------------
Seq Scan on test (cost=0.00..19.51 rows=334 width=44) (actual time=0.545..2.429 rows=721 loops=1)
Filter: (today < '2004-01-01 00:00:00'::timestamp without time zone)
Total runtime: 3.072 ms
(3 rows)
postgres=# explain ANALYZE select * from test where today > '2003-01-01' and today < '2004-01-01';
QUERY PLAN -----------------------------------------------------------------------------------------------------------------------------------------------
Index Scan using idx_today on test (cost=0.00..18.89 rows=6 width=44) (actual time=0.055..1.098 rows=365 loops=1)
Index Cond: ((today > '2003-01-01 00:00:00'::timestamp without time zone) AND (today < '2004-01-01 00:00:00'::timestamp without time zone))
Total runtime: 1.471 ms
(3 rows)
hello
I was expected 1st query should using index, but it doesn't 2nd query doing perfect as you see.
can you explain to me why it's not doing that i expected?? now I'm currently using postgresql 8.0pre3 on linux
/hyunsung jang.
---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
