Given the following record in a collection named "tests":

{
name : "Testing",
values : [

{value1 : 123}

,

{value2 : 456}

]
}

This query returns the record:
db.tests.find({values : { $all : [

{value1 : 123 }

] } } )

This query does not return the record:
db.tests.find({values : { $all : [ {value1 :

{ $exists : true }

} ] } } )

That seems incorrect. Am I doing anything wrong or should this work?