Method and system for index sampled tablescan
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United States of America Patent
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Mar 16, 2010
Grant Date -
May 22, 2003
app pub date -
Aug 7, 2002
filing date -
Nov 19, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optimized query processing system and method for a database system. The database system includes a table of data and an index correlated to both the query and to the table. The optimized query processing system includes an index accessing module adapted to access the index to determine if the table contains an entry satisfying a query predicate; and a tablescan module for scanning substantially the entire table and retrieving data satisfying the query. A method is also disclosed for generating database diagnostic data.
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