find and mongodb code example

Example 1: and operation mongodb find

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

Example 2: 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 3: find by $in mongo

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

Example 4: and in mongodb

{ $and: [ <expression1>, <expression2>, ... ] }

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Misc Example

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