Quick Reference快速参考

await coll.findOne({ title: 'Hamlet' });

coll.find({ year: 2005 });

await coll.insertOne({ title: 'Jackie Robinson' });

await coll.insertMany([
  { title: 'Dangal', rating: 'Not Rated' },
  { title: 'The Boss Baby', rating: 'PG' }
 ]);

await coll.updateOne(
  { title: 'Amadeus' },
  { $set: { 'imdb.rating': 9.5 } }
);

await coll.updateMany(
  { year: 2001 },
  { $inc: { 'imdb.votes': 100 } }
);

await coll.updateOne(
  { title: 'Cosmos' },
  { $push: { genres: 'Educational' } }
):

await coll.replaceOne(
  { name: 'Deli Llama', address: '2 Nassau St' },
  { name: 'Lord of the Wings', zipcode: 10001 }
);

await coll.deleteOne({ title: 'Congo' });

await coll.deleteMany({ title: { $regex: /^Shark.*/ } });

await coll.bulkWrite([
  {
    insertOne: {
      document: {
        title: 'A New Movie',
        year: 2022
      }
    }
  },
  {
    deleteMany: {
      filter: { year: { $lt: 1970 } }
    }
  }
]);

coll.watch([ { $match: { year: { $gte: 2022 } } } ]);

const cursor = coll.find();
for await (const doc of cursor) {
   console.dir(doc);
}

const cursor = coll.find();
const results = await cursor.toArray();

await coll.countDocuments({ year: 2000 });

await coll.distinct('year');

coll.find().limit(2);

coll.find({ title: { $regex: /^Rocky/} }, { skip: 2 });

coll.find().sort({ year: 1});

coll.find().project({ _id: 0, year: 1, imdb: 1 });

await coll.createIndex({ title: 1, year: -1 });

// only searches fields with text indexes仅搜索具有文本索引的字段
coll.find({ $text: { $search: 'zissou' } });