[Solved] You want to find all documents where the field phone exists but is not empty or null. Which Elasticsearch query best achieves this? | Elasticsearch

Elasticsearch - Basic Search Queries

You want to find all documents where the field phone exists but is not empty or null. Which Elasticsearch query best achieves this?

A{"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"term": {"phone": ""}}]}}}

B{"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"script": {"script": "doc['phone'].value != ''"}}]}}}

C{"query": {"exists": {"field": "phone"}}}

D{"query": {"exists": {"field": "phone"}, "term": {"phone": ""}}}

Step-by-Step Solution

Solution:

Step 1: Understand the requirement
We want documents where "phone" exists and is not empty or null.
Step 2: Evaluate each option
{"query": {"exists": {"field": "phone"}}} only checks existence, not emptiness. {"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"term": {"phone": ""}}]}}} incorrectly requires phone to be empty. {"query": {"exists": {"field": "phone"}, "term": {"phone": ""}}} has invalid syntax combining exists and term at same level. {"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"script": {"script": "doc['phone'].value != ''"}}]}}} uses a bool must with exists and a script checking phone is not empty, correctly filtering as needed.
Final Answer:
{"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"script": {"script": "doc['phone'].value != ''"}}]}}} -> Option B
Quick Check:
Exists + script to exclude empty = {"query": {"bool": {"must": [{"exists": {"field": "phone"}}, {"script": {"script": "doc['phone'].value != ''"}}]}}} [OK]

Quick Trick: Combine exists with script to exclude empty values [OK]

Common Mistakes:

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You want to find all documents where the field phone exists but is not empty or null. Which Elasticsearch query best achieves this?