[Solved] Consider the following Elasticsearch query:{"query": {"exists": {"field": "user.email"}}}Which documents will this query return? | Elasticsearch

Elasticsearch - Basic Search Queries

Consider the following Elasticsearch query:

{"query": {"exists": {"field": "user.email"}}}

Which documents will this query return?

ADocuments where the field <code>user</code> exists regardless of <code>email</code>.

BDocuments where the field <code>user.email</code> exists and is not null.

CDocuments where the field <code>email</code> exists anywhere in the document.

DDocuments where the field <code>user.email</code> is null.

Step-by-Step Solution

Solution:

Step 1: Understand the field path
The query checks for the existence of the nested field user.email.
Step 2: Determine matching documents
Only documents where user.email exists and is not null will be returned.
Final Answer:
Documents where the field user.email exists and is not null. -> Option B
Quick Check:
Exists query matches non-null fields only [OK]

Quick Trick: Exists query matches documents with non-null specified field [OK]

Common Mistakes:

MISTAKES

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