Hello!
I have some trouble getting good results from my query.
here is structure
stat_views id | integer id_zone | integer created | timestamp
I have btree index on created and also id and there is 1633832 records in that table
First of all I have to manualy set seq_scan to OFF because I always get seq_scan. When i set it to off my explain show:
explain SELECT count(*) as views FROM stat_views WHERE id = 12; QUERY PLAN ---------------------------------------------------------------------------------------------------- Aggregate (cost=122734.86..122734.86 rows=1 width=0) -> Index Scan using stat_views_id_idx on stat_views (cost=0.00..122632.60 rows=40904 width=0) Index Cond: (id = 12)
But what I need is to count views for some day, so I use
explain SELECT count(*) as views FROM stat_views WHERE date_part('day', created) = 18;
QUERY PLAN ------------------------------------------------------------------------------------ Aggregate (cost=100101618.08..100101618.08 rows=1 width=0) -> Seq Scan on stat_views (cost=100000000.00..100101565.62 rows=20984 width=0) Filter: (date_part('day'::text, created) = 18::double precision)
How can I make this to use index and speed the query. Now it takes about 12 seconds.
Can you post explain analyze for the same?
Shridhar
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