Index Scans

Oops, ignore that first post :)

I am unable to get the following query to use an index scan, any
suggestions?

Query
-----
SELECT username, acctsessiontime, acctinputoctets, acctoutputoctets FROM
radacct WHERE ((tstamp >= '06-04-2000 00:00:00-04') AND (tstamp <
'06-05-2000 00:00:00-04') AND (acctstatustype = 'Stop')) ORDER BY username
ASC;

Indexes (I created this many for testing only)
-------
CREATE INDEX idx_radacct_1 ON radacct (username,acctstatustype,tstamp);
CREATE INDEX idx_radacct_2 ON radacct (username,acctstatustype);
CREATE INDEX idx_radacct_3 ON radacct (username,tstamp);
CREATE INDEX idx_radacct_4 ON radacct (acctstatustype,tstamp);
CREATE INDEX idx_radacct_5 ON radacct (tstamp);
CREATE INDEX idx_radacct_6 ON radacct (acctstatustype);
CREATE INDEX idx_radacct_7 ON radacct (username);
CREATE INDEX idx_radacct_8 ON radacct (tstamp,acctstatustype);

Here is the output of explain on the queries:

radius=# VACUUM ANALYZE;
VACUUM
radius=# set enable_seqscan=on;
SET VARIABLE
radius=# explain **INSERT QUERY**
NOTICE: QUERY PLAN:

Sort (cost=16528.92..16528.92 rows=5588 width=24)
-> Seq Scan on radacct (cost=0.00..16181.12 rows=5588 width=24)

EXPLAIN
radius=# set enable_seqscan=off;
SET VARIABLE
radius=# explain **INSERT QUERY**
NOTICE: QUERY PLAN:

Sort (cost=17500.82..17500.82 rows=5588 width=24)
-> Index Scan using idx_radacct_8 on radacct (cost=0.00..17153.01
rows=5588 width=24)

EXPLAIN

Thanks

Michael Fork - CCNA - MCP - A+
Network Support - Toledo Internet Access - Toledo Ohio