Applying distinct hash-join distributions of operators to both even and uneven database records
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United States of America Patent
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Feb 16, 1999
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N/A
app pub date -
Apr 18, 1997
filing date -
Apr 18, 1997
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Expired
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Abstract
A computer-based method and system of processing records read respectively from first and second related tables of a database includes determining whether data contained in the records read from the first or second tables is unevenly distributed. Records corresponding to evenly distributed data are searched for matches using a first set of instances of the hash-join operator, and records corresponding to data which is unevenly distributed are searched for matches using a second set of instances of a hash-join operator.
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