find() mongodb code example

Example 1: mongo console find by id

db.collection.find({_id:ObjectId('5e208c18d598b806c869ca37')}).pretty()

Example 2: and operation mongodb find

db.inventory.find( { $and: [ { price: { $ne: 1.99 } }, { price: { $exists: true } } ] } )

Example 3: find by $in mongo

db.persons.find( { name: { $in: [ "John", "David", "Sarah" ] } } )

Example 4: mongodb findmany

model.find({
    '_id': { $in: [
        mongoose.Types.ObjectId('4ed3ede8844f0f351100000c'),
        mongoose.Types.ObjectId('4ed3f117a844e0471100000d'), 
        mongoose.Types.ObjectId('4ed3f18132f50c491100000e')
    ]}
}, function(err, docs){
     console.log(docs);
});

Example 5: mongodb findone

itemsCollection.findOne(query, projection)
  .then(result => {
    if(result) {
      console.log(`Successfully found document: ${result}.`);
    } else {
      console.log("No document matches the provided query.");
    }
    return result;
  })
  .catch(err => console.error(`Failed to find document: ${err}`));