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RE: Slightly O.T. Data Warehouse, bitmapped indexes, Discoverer

From: Weiss, Rick <rweiss_at_state.mt.us>
Date: Tue, 22 Apr 2003 13:47:00 -0800
Message-ID: <F001.00587683.20030422134700@fatcity.com>


Any NULL values in the selected columns?    

-----Original Message-----
Sent: Tuesday, April 22, 2003 15:27
To: Multiple recipients of list ORACLE-L

Doing a basic quality check on data using discoverer.

Choosing simple table report

Choosing field (like a code field) and a "count" then getting a total at the end.

The grand total doesn't always equal the total sum of rows in the table and there is no selection criteria - no where predicate. Just different bitmapped indexes being used (or not).

This is a partitioned table - partitioned on year and the bitmapped indexes are local prefixed (required) but in the counts we are not always using
(selecting or grouping by) the field on which the table is partitioned -
YEAR. Wassup?

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Author: Weiss, Rick
  INET: rweiss_at_state.mt.us

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Received on Tue Apr 22 2003 - 16:47:00 CDT

Original text of this message

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