REINDEX question

Good morning,

We are at Postgres 7.4.5. I have encountered inaccuracies

after reindexing related to the statistics posted back to the PG_CLASS
table

For instance:

1. We have a 'queues' table with 6 indexes. We are at 110,000 rows in
this table.

When I reindex, the RELPAGE count decreases as expected but the
RELTUPLE

Count increases to about 132,000 in all indexes. I check and there
are still

Only 110,000 rows on the table.

2. We have a table that is quite volatile in its numbers, ranging from 100
to 6 million rows.

Last week we were at 50,000 rows but PG_CLASS.RELTUPLES showed 6
million for

The indexes. I reindexed and, again the RELPAGES count went down but
the RELTUPLES

Number went down to just 3 million.

Again a count after reindex gave the actual row count at 52,000.

Does anybody have any insight why this is happening and what I can do in the
short term?

I know we are at a back-leveled version so perhaps the long-term answer is
to upgrade.

Thank you,

Mark Steben

Senior DBA - AutoRevenue

Direct dial phone number: 413-327-3045

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