Which of the following JSON snippets correctly returns only the title and author fields in the search results using source filtering?

easy📝 Syntax Q3 of 15

Elasticsearch - Search Results and Scoring

Which of the following JSON snippets correctly returns only the title and author fields in the search results using source filtering?

A{"_source": {"includes": ["title", "author"]}, "query": {"match_all": {}}}

B{"_source": {"excludes": ["title", "author"]}, "query": {"match_all": {}}}

C{"_source": ["title", "author"], "query": {"match_all": {}}}

D{"_source": false, "query": {"match_all": {}}}

Step-by-Step Solution

Solution:

Step 1: Identify correct syntax
To include specific fields, use _source.includes with an array of field names.
Step 2: Analyze options
{"_source": {"includes": ["title", "author"]}, "query": {"match_all": {}}} correctly uses includes with an array. {"_source": {"excludes": ["title", "author"]}, "query": {"match_all": {}}} excludes fields, {"_source": ["title", "author"], "query": {"match_all": {}}} uses an invalid format, and {"_source": false, "query": {"match_all": {}}} disables source entirely.
Final Answer:
Option A -> Option A
Quick Check:
Includes array returns only specified fields [OK]

Quick Trick: Use _source.includes with array for specific fields [OK]

Common Mistakes:

MISTAKES

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