Multi-match query in Elasticsearch - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a multi-match query in Elasticsearch?

A multi-match query lets you search for a text across multiple fields in your documents at once. It helps find matches in any of the specified fields.

beginner

Which parameter specifies the fields to search in a multi-match query?

The fields parameter lists the fields where Elasticsearch will look for the search text.

intermediate

What does the type option in a multi-match query control?

The type option controls how the query matches text across fields, like best_fields (default), most_fields, cross_fields, phrase, or phrase_prefix.

intermediate

How does the operator parameter affect a multi-match query?

The operator parameter decides if all words must match (and) or if any word can match (or) in the search text.

beginner

Give an example of a simple multi-match query searching for 'apple' in fields 'title' and 'description'.

{ "query": { "multi_match": { "query": "apple", "fields": ["title", "description"] } } }

What does a multi-match query do in Elasticsearch?

A Searches for a text in multiple fields at once

B Updates multiple documents simultaneously

C Deletes multiple fields from documents

D Indexes multiple documents in one request

A multi-match query searches for the given text across multiple fields in the documents.

Which parameter lists the fields to search in a multi-match query?

A operator

B fields

C query

D type

The 'fields' parameter specifies which fields to search in.

What is the default type for a multi-match query?

A most_fields

B phrase

C cross_fields

D best_fields

The default type is 'best_fields', which finds the single best matching field.

If you want all words in the query to match, which operator should you use?

A and

B exists

C not

D or

The 'and' operator requires all words to match in the fields.

Which multi-match type treats multiple fields as one combined field for matching?

A best_fields

B most_fields

C cross_fields

D phrase

The 'cross_fields' type treats fields as one combined field to match terms.

Explain how a multi-match query works and when you would use it.

Think about searching a book by title and author at the same time.

Describe the difference between 'best_fields' and 'cross_fields' types in a multi-match query.

Imagine searching for a phrase split across two fields.