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Showing posts with label FULL SCAN. Show all posts
Showing posts with label FULL SCAN. Show all posts
Jul 14, 2011

UNDERSTANDING EXPLAIN PLAN 5

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  Table Access Options FULL Reads every row in the table. Every block is read until the high water mark of the table is ...
Jun 29, 2011

UNDERSTANDING EXPLAIN PLAN 1

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  UNIQUE Sorts to eliminate duplicate rows. This typically occurs as a result of using the DISTINCT clause. SORT UNI...
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