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Efficient calculation of sets of distinct results

  • US 20070185838A1
  • Filed: 05/15/2006
  • Published: 08/09/2007
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
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1. A computer-implemented method for efficient calculation of sets of distinct results in an information retrieval service, the method comprising:

  • receiving a query from a client application, the query having at least one requested attribute and one or more conditions;

    for each row identifier in a database table that matches the one or more conditions, calculating a tuple of value identifiers having an entry for each requested attribute; and

    assigning a unique number to the tuple for each distinct combination of the value identifiers.

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