mongodb get field value
Specifies the fields to return in the documents that match the query filter. ... The following query uses $gt to return documents where the value of qty is greater ... ,find() is enough. db.CollectionName.find(},HomeTown:1}). in java, it would be: BasicDBObject query = new BasicDBObject(); BasicDBObject field = new ...
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 mongodb get field value 相關參考資料
db.collection.distinct() — MongoDB Manual
跳到 Return Distinct Values for an Array Field. - The following example returns the distinct values for the field sizes from all documents in the ... https://docs.mongodb.com db.collection.find() — MongoDB Manual
Specifies the fields to return in the documents that match the query filter. ... The following query uses $gt to return documents where the value of qty is greater ... https://docs.mongodb.com How to retrieve a value from mongoDB, by its key name? - Stack ...
find() is enough. db.CollectionName.find(},HomeTown:1}). in java, it would be: BasicDBObject query = new BasicDBObject(); BasicDBObject field = new ... https://stackoverflow.com How to return only value of a field in mongodb - Stack Overflow
Not sure what you language implementation is but the basic concept is: var result = [] db.users.find().forEach(function(u) result.push(u.text) }). https://stackoverflow.com How to return specific field's value in mongodb - Stack Overflow
MongoDB queries always return document objects, not single values. ... so that you're working with just a single doc instead of the cursor that you get with find . https://stackoverflow.com List all values of a certain field in mongodb - Stack Overflow
db.collection.distinct('x'). should give you an array of unique values for that field. https://stackoverflow.com MongoDB Query How to get one field value? - help - Meteor forums
Hi guys i am new to mongodb i am trying to write a query to get a single field value from db: "_id" : "vK4PvdNBfBbdv92PH", "ownerId" ... https://forums.meteor.com mongoDB: get field value of an array object - Stack Overflow
test is just a JS array. Use normal array syntax to access its elements: var result = Collection.findOne(_id: 'nAwt3b76c24mZfqxz'}).test["30"];. https://stackoverflow.com Project Fields to Return from Query - MongoDB Documentation
By default, queries in MongoDB return all fields in matching documents. To limit the amount of data that MongoDB sends to applications, you can include a ... https://docs.mongodb.com |