What is a filter in Elasticsearch queries used for?
a) To sort query results
b) To exclude certain documents from search results without affecting the score
c) To modify the ranking of search results
d) To remove duplicate documents
Answer:
b) To exclude certain documents from search results without affecting the score
Explanation:
Filters in Elasticsearch are used to exclude documents from search results without calculating a relevance score, making them more efficient for certain types of queries.