very slow query - Mailing list pgsql-general

From Ashish Karalkar
Subject very slow query
Date
Msg-id 884154.78735.qm@web94308.mail.in2.yahoo.com
Whole thread Raw
Responses Re: very slow query
Re: very slow query
List pgsql-general
Hi,
I am having PostgreSQL 8.2.4 on Suse 10.3

Server is not using the index insted it chooses to take seq scan path. table is having @ 120 million rows

here is the output from planner:
Nested Loop IN Join  (cost=0.00..5030217.97 rows=2 width=106)
   ->  Seq Scan on sms_new  (cost=0.00..5027902.00 rows=384 width=106)
         Filter: (mobile = 919820920858::bigint)
   ->  Index Scan using deliveryid_pkey on delivery  (cost=0.00..6.02 rows=1 width=8)
         Index Cond: ("outer".deliveryid = delivery.deliveryid)
         Filter: ((createddate > '2007-12-11 00:00:00'::timestamp without time zone) AND (createddate < '2007-12-11 21:00:00'::timestamp without time zone) AND ((keyword)::text = 'CRI'::text))

column deliveryid has an index over it in sms_new table.

can anybody please guide to force the usage of index

Thanks in advance
With Regards
Ashish






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