Apparatus for drawing a progressively network traffic flow data, embodiments of the present invention includes methods and computer programs. In one example, the method includes receiving network traffic analyzer queries the network traffic flow data of a predetermined period of time. Also, the method further includes generating a subquery based respectively on a plurality of portions having different time of the predetermined time period by modifying the query and performing a subquery at least one each of the subqueries is complete and a can be output to increase gradually the results of the subquery is executed for each when.
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