[Solved] You wrote this prefix query but it returns no results:{ "query": { "prefix": { "title": "prog*" } } }What is the error? | Elasticsearch

Elasticsearch - Basic Search Queries

You wrote this prefix query but it returns no results:

{ "query": { "prefix": { "title": "prog*" } } }

What is the error?

AField name "title" is invalid

BPrefix query should not include the asterisk (*)

CPrefix queries require wildcard keyword

DPrefix query must use match instead of prefix

Step-by-Step Solution

Solution:

Step 1: Understand prefix query syntax
Prefix queries expect a string prefix without wildcards like '*'. The asterisk is not needed and causes no matches.
Step 2: Check other options
Field name is assumed valid, wildcard keyword is different query type, and match query is unrelated to prefix syntax.
Final Answer:
Prefix query should not include the asterisk (*) -> Option B
Quick Check:
Prefix query uses plain prefix string, no * [OK]

Quick Trick: Remove * from prefix query string to fix [OK]

Common Mistakes:

MISTAKES

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