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下面这行工作:有没有办法在map_reduce之前通过MongoDB中的“查找”?
Analytic.collection.map_reduce(map, reduce).find
但有没有办法做到
Analytic.collection.find('page_type' => 'products').map_reduce(map, reduce).find
,甚至过滤日期范围,如date >= "2010-08-01" and date <= "2010-08-31"
?