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下面這行工作:有沒有辦法在map_reduce之前通過MongoDB中的「查找」?
Analytic.collection.map_reduce(map, reduce).find
但有沒有辦法做到
Analytic.collection.find('page_type' => 'products').map_reduce(map, reduce).find
,甚至過濾日期範圍,如date >= "2010-08-01" and date <= "2010-08-31"
?