Mongodb: array contains and array don't contains?

I was updating it wrong. Should be this: db.test. Update({ _id: X }, {'$push': {"a2": 'A'}}) Or this: db.test.

Update({ _id: X }, {'$set': {"a2": 'A'}}) the document looks like this: { "_id" : ObjectId("4dbacb40696b6ede04c5ef97"), "a1" : "A" , "a2" : { "0" : "A" } } Where it's correct that {"0": "A"} is not equal to A.

I was updating it wrong. Should be this: db.test. Update({ _id: X }, {'$push': {"a2": 'A'}}); Or this: db.test.

Update({ _id: X }, {'$set': {"a2": 'A'}}); the document looks like this: { "_id" : ObjectId("4dbacb40696b6ede04c5ef97"), "a1" : "A" , "a2" : { "0" : "A" } } Where it's correct that {"0": "A"} is not equal to A.

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