Approximate Calculation of Window Aggregate Functions via Global Random Sample

Abstract

Window functions have been a part of the SQL standard since 2003 and have been studied extensively during the past decade. They are widely used in data analysis; almost all the current mainstream commercial databases support window functions. However, in recent years the size of datasets is growing steeply; the existing window function implementations are… (More)
DOI: 10.1007/s41019-018-0060-x

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