mongodb - How to query nested objects? -

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i have problem when querying mongodb nested objects notation:

db.messages.find( { headers : { from: "reservations@marriott.com" } } ).count() 0 db.messages.find( { 'headers.from': "reservations@marriott.com" }  ).count() 5

i can't see doing wrong. expecting nested object notation return same result dot notation query. wrong?

db.messages.find( { headers : { from: "reservations@marriott.com" } } )

this queries documents headers equals { from: ... }, i.e. contains no other fields.

db.messages.find( { 'headers.from': "reservations@marriott.com" } )

this looks @ headers.from field, not affected other fields contained in, or missing from, headers.

dot-notation docs


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