https://ops.docs.72602.space/using/database/elastic_search/index.html Basic Query exist query normal advanced Returns documents that contain an indexed value for a field. GET /_search { "query": { "exists": { "field": "user" } } } The following search returns documents that are missing an indexed value for the user.id field. GET /_search { "query": { "bool": { "must_not": { "exists": { "field": "user.id" } } } } } fuzz query normal advanced Returns documents that contain terms similar to the search term, as measured by a Levenshtein edit distance. Hugo en