Elasticsearch - Basic Search Queries
Which of the following is the correct way to write an
exists query in Elasticsearch to check if the field user_id exists?Which of the following is the correct way to write an exists query in Elasticsearch to check if the field user_id exists?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the correct key
Theexistsquery requires the keyfieldto specify the field name.Step 2: Check the JSON structure
The correct syntax is{"query": {"exists": {"field": "user_id"}}}.Final Answer:
{"query": {"exists": {"field": "user_id"}}} -> Option BQuick Check:
Correct key isfield[OK]
Quick Trick: Use 'field' key to specify field name in exists query [OK]
Common Mistakes:
MISTAKES- Using 'field_name' instead of 'field'
- Swapping key and value positions
- Nesting field inside another object
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