mongodb - Query on 2 properties of the same embedded object in an array -


i have collection of objects :

db.coll.find().pretty();  {     "_id" : "1",     "elements" : [         { "key" : "a", "value" : 10 },         { "key" : "b", "value" : 1 },     ] },  {     "_id" : "2",     "elements" : [         { "key" : "a", "value" : 1 },         { "key" : "c", "value" : 33 },     ] }

i want find documents contain element "key" equal "a" , "value" greater 5.

not sure if possible without using aggregation framework.

without aggregation, using $elemmatch , query below :

db.coll.find({"elements":{"$elemmatch":{"$and":[{"key":"a"},{"value":{"$gt":5}}]}}}).pretty()

or if want use aggregation used following query aggregation 

db.coll.aggregate({"$unwind":"$elements"},{"$match":{"$and":[{"elements.key":"a"},{"elements.value":{"$gt":5}}]}}).pretty()

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