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PROCESSING WINDOW PARTITIONING AND ORDERING FOR ON-LINE ANALYTICAL PROCESSING (OLAP) FUNCTIONS

  • US 20170060978A1
  • Filed: 09/14/2016
  • Published: 03/02/2017
  • Est. Priority Date: 08/28/2015
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • performing a prior compare operation by;

    receiving an input vector for each of one or more attributes of input data that represent one of a partition-by column and an order-by column in a database query;

    generating a per-attribute comparison vector for each input vector; and

    producing a single output vector using each per-attribute comparison vector, wherein each value of the single output vector is a Boolean attribute whose value for a given tuple is true if a current value and a most recent prior value of any of the one or more attributes are different.

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