Rewriting Aggregate Queries Using Views


We investigate the problem of rewriting queries with aggregate operators using views that may or may not contain aggregate operators. A rewriting of a query is a second query that uses view predicates such that evaluating rst the views and then the rewriting yields the same result as evaluating the original query. In this sense, the original query and the… (More)
DOI: 10.1145/303976.303992


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