aggregate query processing in canada

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Application Area:Building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal, etc.

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Jul 19 2018 · In this paper we propose to directly estimate the aggregate query result on incomplete data rather than imputing the missing values An interval estimation composed of the upper and lower bound of aggregate query results among all possible interpretation of

Sep 02 2014 · Existing aggregate query processing algorithms focus on optimizing various query operations but give less importance to communication cost overhead Twophase algorithm However in cloud architectures the communication cost overhead is an important factor in query processing

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Aggregate query processing using random walk approach in dynamic topeer p2p network is increasingly becoming popular because it offers opportunities for realtime communication adhoc collaboration and information sharing in a largescale distributed topeer computing is defined as the sharing of

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To answer an aggregate query a large proportion of the databases needs to be accessed Compared to nonaggregate queries aggregate queries are expensive and require long processing time While parallel andor distributed processing techniques can be employed to speed up the processing of such queries the users may still find the long waiting

SQL Profiler also provides the Query ProcessingAggregate Table Rewrite Query extended event The following JSON snippet shows an example of the output of the event when an aggregation is used matchingResult shows that the subquery used an aggregation dataRequest shows the GroupBy columns and aggregated columns the subquery used

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