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Operating System:
ALL
Steps To Reproduce:
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connecting to: test > db.a.drop(); true > db.a.insert({a: 1}); > db.a.insert({a: 2}); > db.a.insert({a: 3}); > db.a.find({q:1}); > db.a.find({query:1}); > db.a.find({query:{}}); { "_id" : ObjectId("50d7a88bd49137e7c8a0658a"), "a" : 1 } { "_id" : ObjectId("50d7a890d49137e7c8a0658b"), "a" : 2 } { "_id" : ObjectId("50d7a893d49137e7c8a0658c"), "a" : 3 } > db.a.find({query:{a:1}}); { "_id" : ObjectId("50d7a88bd49137e7c8a0658a"), "a" : 1 } >
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connecting to: test > db.a.drop(); true > db.a.insert({a: 1}); > db.a.insert({a: 2}); > db.a.insert({a: 3}); > db.a.find({q:1}); > db.a.find({query:1}); > db.a.find({query:{}}); { "_id" : ObjectId( "50d7a88bd49137e7c8a0658a" ), "a" : 1 } { "_id" : ObjectId( "50d7a890d49137e7c8a0658b" ), "a" : 2 } { "_id" : ObjectId( "50d7a893d49137e7c8a0658c" ), "a" : 3 } > db.a.find({query:{a:1}}); { "_id" : ObjectId( "50d7a88bd49137e7c8a0658a" ), "a" : 1 } >

query result all

is duplicated by

SERVER-8703 $all does not return document when searching on field named 'query'

SERVER-11864 $in operator fails if document field name is "query"

is related to

SERVER-9812 User query is interpreted incorrectly if the first field is "query"

SERVER-6767 Interpret $query as special so you can copy profiler/logged queries into shell