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Message Posted: Mon, 25 Jul 2005 @ 10:52:25 GMT
This phrase usually means that the table is being accessed by scanning a secondary index (NUSI), the number (in your case #1) is the number assigned to each index when it is created. However, index #1 is always (as far as I'm aware) the Primary Index and a traversal via the primary index is usually described as an 'all rows scan'. Does the table in question have a PPI defined ? That's the only thing that I can think would warrant this type of description. Can you post the entire explain, or at least the step involved?
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