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Message Posted: Thu, 03 May 2012 @ 11:20:40 GMT

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<-- Anonymously Posted: Thursday, May 03, 2012 05:10 -->

Hi Sughesh,

To answer this question, we will need more information regarding the query, the PIs, indexes, statistics etc. As a pointer, below are some of the cases when a full table scan can occur.

1. SQL does not contain the WHERE clause.

2. WHERE clause does not use the Primaty Index.

3. In-equality operators in the where clause 4. Badly chosen/distributed PI or PPI 5. Use of LIKE clause 6. Stale or no stats.

HTH.

Thanks.

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