Text search with text indexes in MongoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a text index in MongoDB?

A text index in MongoDB is a special index type that allows efficient searching of string content within documents using text search queries.

beginner

How do you create a text index on the 'description' field in a MongoDB collection named 'products'?

Use the command: <br>db.products.createIndex({ description: "text" }) to create a text index on the 'description' field.

beginner

What MongoDB query operator is used to perform a text search on a collection with a text index?

The $text operator is used in the query to perform a text search on fields covered by a text index.

beginner

How can you search for documents containing the word 'coffee' using text search?

Use the query: <br>db.collection.find({ $text: { $search: "coffee" } }) to find documents containing 'coffee'.

intermediate

What is the purpose of the $meta operator in text search queries?

The $meta operator can be used to project the text search score, which shows how well a document matches the search terms.

Which command creates a text index on the 'title' field in MongoDB?

A db.collection.createTextIndex({ title: 1 })

B db.collection.createIndex({ title: 1 })

C db.collection.createIndex({ title: "string" })

D db.collection.createIndex({ title: "text" })

The correct syntax to create a text index is using { field: "text" }.

What operator do you use to perform a text search in MongoDB?

A $findText

B $search

C $text

D $queryText

The $text operator is used in queries to perform text search on text-indexed fields.

What does the $meta operator do in a text search query?

A Projects the text search relevance score

B Filters documents by metadata

C Sorts documents alphabetically

D Creates a new text index

The $meta operator projects the relevance score of documents matching the text search.

Can you create a text index on multiple fields in MongoDB?

A No, only one field per text index

B Yes, by listing fields with 'text' type in createIndex

C Yes, but only if fields are numeric

D No, text indexes are not supported

You can create a text index on multiple fields by specifying each field with 'text' in createIndex.

Which of these is a valid text search query to find documents containing 'tea' or 'coffee'?

A db.collection.find({ $text: { $search: "tea coffee" } })

B db.collection.find({ $text: { $search: "tea, coffee" } })

C db.collection.find({ $text: { $search: "tea OR coffee" } })

D db.collection.find({ $text: { $search: "tea+coffee" } })

Listing words separated by space searches for documents containing any of the words.

Explain how to set up and use text search in MongoDB from creating an index to querying documents.

Think about the steps from index creation to running a search query.

Describe the benefits of using text indexes for searching text in MongoDB compared to regular queries.

Consider performance and features that text indexes add.