Statistical representation of skewed data
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United States of America Patent
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Jun 10, 2008
Grant Date -
N/A
app pub date -
Dec 31, 2003
filing date -
Dec 31, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method, database system, and computer program for collecting statistics about a table are disclosed. The table includes one or more rows and each row includes a respective value. The method includes creating zero or more histogram buckets. Each histogram bucket includes a width representing a respective range of values and a height representing a count of rows having values in the range of values. The method further includes creating one or more high-bias buckets, each high-bias bucket represents one or more values that appear in a minimum percentage of rows.
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