Update Document (update)

Modify a simple document:

. db.getCollection ( "Test") INSERT ( 
    { 
        title: "goods shopping list. 1", 
        AMOUNT: 35, 
        Detail: [ 
            {name: "Apple",. price: 22 is}, 
            {name: "flour", price: 18 } 
        ] 
    } 
); 
// modify a qualified (inserted, a first qualifying) 
db.getCollection ( "Test") Update (. 
    { 
        title: "goods shopping list. 1" 
    }, 
    { 
        $ SET: {title : "shopping list of goods 2"} 
    } 
);

(Update, modify qualifying a (insert, in line with the conditions of the earliest a ))

Update Fields (increase, decrease):