Index selection for an index access path
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United States of America Patent
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Jul 13, 1999
Grant Date -
N/A
app pub date -
Feb 28, 1997
filing date -
Feb 28, 1997
priority date (Note) -
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Abstract
A list of indexes, from which indexes are selected for an index access path, is sorted by number of columns upon which each index is built. From the sorted list of indexes, a set of index access methods is generated in a heuristically ordered set of passes from a given WHERE clause. The index access methods that comprise the index access path are selected from the set of index access methods according to a cost/benefit analysis.
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