index not used afer VACUUM ANALYZE

From: mike <mike(at)Reifenberger(dot)com>
To: pgsql-bugs(at)postgresql(dot)org
Subject: index not used afer VACUUM ANALYZE
Date: 2003-08-21 16:28:53
Message-ID: 20030821172056.W1605-500000@mike.reifenberger.com
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Hi,
I hav a db as specified in nit.sql
flows has 763488 entries.

After dropping/creating/loading the db and running auswert.sh I get
the attached result from query1.txt.
After 'VACUUM ANALYZE' I get the results from query2.txt

As you can see, the indexes are not used any longer.
Why?

Bye/2
---
Michael Reifenberger, Business Unit Manager SAP-Basis, Plaut Consulting
Comp: Michael(dot)Reifenberger(at)plaut(dot)de | Priv: Michael(at)Reifenberger(dot)com
http://www.plaut.de | http://www.Reifenberger.com

Attachment Content-Type Size
nit.sql text/plain 897 bytes
auswert.sh text/plain 3.8 KB
query1.txt text/plain 2.4 KB
query2.txt text/plain 2.7 KB

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