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A Query enables you to build up a query using chaining syntax, rather than specifying a JSON object. The below 2 examples are equivalent. // With a JSON doc await Person. find ({ occupation: /host/, 'name.last': 'Ghost', age: { $gt: 17, $lt: 66}, likes: { $in: ['vaporizing', 'talking'] } }). limit (10). sort ({ occupation: - 1}).
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MongoDB has a $regex operator which allows a regular expression to be submitted as a query. So you query for strings containing "Alex" you do this: Books.find( { "authors": { "$regex": "Alex", "$options": "i" } }, function(err,docs) { } ); You can also do this: Books.find( { "authors": /Alex/i }, function(err,docs) { } );
30 gru 2023 · The purpose of the Model.find() method is to search for documents within a MongoDB collection and return them as an array of document instances. It supports query conditions, projection, and options like sorting, limiting the number of documents, etc.
10 lip 2019 · The Mongoose `Model.find()` function finds all documents in a collection that match a query. In this tutorial, you will learn how to structure common queries in Mongoose.
const query = MyModel. find (); // `query` is an instance of `Query` query. setOptions ({ lean : true}); query. collection (MyModel. collection); query. where ('age'). gte (21). exec (callback); // You can instantiate a query directly.
2 dni temu · The find() function can be used to query documents from a collection, and each of these functions returns a Mongoose Query object, which supports chaining additional query operations like sorting, limiting, and filtering results.
The first parameter to Model.find(), Query#find(), Model.findOne(), etc. is called filter. In older content this parameter is sometimes called query or conditions. For example: When you execute the query using Query#exec() or Query#then(), Mongoose casts the filter to match your schema.
