db.foo.save( { 'name':'neo', 'address':[{'city':'shenzhen','post':"518000"}, {'city':'heilongjiang','post':"135000"}], 'phone':["13113668800","13322993040","13266884444"] } )
{ "_id" : ObjectId("5bbefed1b04a8c0d7395d1b5"), "name" : "neo", "address" : [ { "city" : "shenzhen", "post" : "518000" }, { "city" : "heilongjiang", "post" : "135000" } ], "phone" : [ "13113668800", "13322993040", "13266884444" ] }
刪除數組元素
db.getCollection('foo').update({"_id":ObjectId("5bbeff40b04a8c0d7395d1b6")},{"$pull":{"phone":"13266884444"}})
刪除數組中的對象
db.getCollection('foo').update({"_id":ObjectId("5bbeff40b04a8c0d7395d1b6")},{"$pull":{"address":{"city":"heilongjiang"}}})
查找替換
db.getCollection('foo').update({"address.city":"shenzhen"},{"$set":{"address.$.post":"000000"}})