Method and data processing system for detecting patterns in SQL to allow optimized use of multi-column indexes
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United States of America Patent
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Mar 5, 2002
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N/A
app pub date -
Dec 23, 1999
filing date -
Dec 23, 1999
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Abstract
A database management optimizer detects patterns in SQL that occur when search conditions are present that represent ranges of values across multiple columns of a table. These patterns are recognized and translated into simpler key value ranges that can be used to provide more efficient use of database indexes.
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