The following functions are available only in aggregate, pivot, unpivot, and window transformations. Aggregate function Task approxDistinctCount Gets the approximate aggregate count of distinct values ...

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A calculation that is made on several records or cells of data. SUM, AVG, MAX, MIN and COUNT are examples of aggregate functions that are used in spreadsheets and database programs. THIS DEFINITION IS ...

Abstract: In this article, we define an approximate generalization of aggregate functions for relational data with temporal attributes. This generalization is parametrized to allow simulation of a ...