USER DEFINED FUNCTION DATABASE PROCESSING
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United States of America Patent
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Issued Date -
May 24, 2012
app pub date -
Nov 24, 2010
filing date -
Nov 24, 2010
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Abstract
Apparatus, systems, and methods may operate to retrieve multiple rows of a database in response to receiving a request to execute an aggregate user defined function (UDF) over the multiple rows, to sort each of the multiple rows into common groups, grouping together individual ones of the multiple rows that share one of the common groups, and to send UDF execution requests to apply the aggregate UDF to aggregate buffers of the common groups to produce an aggregate result, so that one of the UDF execution requests and one context switch are used to process each of the aggregate buffers used within one of the groups to provide at least one intermediate result that can be processed to form the aggregate result. Other apparatus, systems, and methods are disclosed.
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