Mongodb Query To select records having a given key
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Published on 2011-01-03T05:57:23Z
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2011/01/04
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mongodb
let the records in database are
{"_id":"1","fn":"sagar","ln":"Varpe"}
{"_id":"1","fn":"sag","score":"10"}
{"_id":"1","ln":"ln1","score":"10"}
{"_id":"1","ln":"ln2"}
I need to design a MongoDB query to find all records who has a given key
like if i pass "ln" as a parameter to query it shold return all records in which "ln"is a Key , the results fo are
{"_id":"1","fn":"sagar","ln":"Varpe"}
{"_id":"1","ln":"ln1","score":"10"}
{"_id":"1","ln":"ln2"}
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