El campo de matriz de MongoDB contiene
db.inventory.find( { tags: { $all: ["red", "blank"] } } )
Worrisome Wallaby
db.inventory.find( { tags: { $all: ["red", "blank"] } } )
db.collection.find({
'$expr': {
'$setEquals': ['$toys', ['doll', 'car']]
}
})db.collection('col1').find("values":{"$not":{"$elemMatch":{"name":{$nin:['val1', 'val2']}}}}})