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SYSTEM AND METHOD FOR MULTIPLE DISTINCT AGGREGATE QUERIES

  • US 20090228433A1
  • Filed: 03/07/2008
  • Published: 09/10/2009
  • Est. Priority Date: 03/07/2008
  • Status: Active Grant
First Claim
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1. A data processor implemented method of executing multiple distinct aggregate type queries, comprising:

  • providing at least one Counting Bloom Filter for each distinct column of an input data stream;

    reviewing count values in the at least one Counting Bloom Filter for the existence of duplicates in each distinct column; and

    if necessary, using a distinct hash operator to remove duplicates from each distinct column of the input data stream, thereby removing the need for replicating the input data stream and minimizing distinct hash operator processing.

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