query mongodb
db.inventory.find( { status: "D" } )query mongodb
db.inventory.find( { status: "D" } )Mongo-queries
db.course
.find({price: {$set: {$gte: 8, $lte: 28} }})
.limit(8)
.sort({name: 1})
.select({name: 1, tags: 1})
// operators:
// Comparison:
// $eq, $gt, $gte, $lt, $lte, $ne: a specified value
// $in, $nin : the values specified in an array
// Logical: $and, $not, $nor, $or
// Element: $exists, $type
.......query mongodb
db.inventory.find( {} )Mongo Query
using System;
using MongoDB.Driver;
using MongoDB.Bson;
namespace MongoQuery
{
class Program
{
static void Main(string[] args)
{
var dbClient = new MongoClient("mongodb://127.0.0.1:27017");
IMongoDatabase db = dbClient.GetDatabase("testdb");
var cars = db.GetCollection<BsonDocument>("cars");
var builder = Builders<BsonDocument>.Filter;
var filter = builder.Gt("price", 30000) & builder.Lt("price", 55000);
var docs = cars.Find(filter).ToList();
docs.ForEach(doc => {
Console.WriteLine(doc);
});
}
}
}Copyright © 2021 Codeinu
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