ElasticSearch ElasticSearch Search & Query DSL

Question 1

What is the Query DSL in Elasticsearch?

Accepted Answer

A JSON-based language for defining queries

Answer

The Query DSL (Domain Specific Language) is a JSON-based interface that allows you to build complex queries using a flexible and expressive syntax.

Question 2

What is the difference between a 'filter' context and a 'query' context in Elasticsearch?

Accepted Answer

Query context calculates relevance scores; filter context only checks if documents match without scoring

Answer

Query context determines how well a document matches and computes a relevance score, while filter context only checks if a document matches with no scoring and is cacheable.

Question 3

What does a 'match' query do in Elasticsearch?

Accepted Answer

Analyzes the input text and finds documents matching the analyzed terms

Answer

A match query analyzes the query string using the field's analyzer and then searches for documents containing those terms.

Question 4

Which query type is best for exact value matching on keyword fields in Elasticsearch?

Accepted Answer

term

Answer

A 'term' query finds documents that contain the exact term specified, without any analysis, making it ideal for keyword, numeric, or date fields.

Question 5

What is a 'bool' query in Elasticsearch used for?

Accepted Answer

Combining multiple query clauses using must, should, must_not, and filter

Answer

A bool query combines multiple query clauses using must (required), should (optional), must_not (exclude), and filter (required, no score) logic.

ElasticSearch Practice Test

ElasticSearch Practice Test

ElasticSearch ElasticSearch Search & Query DSL