Elasticsearch case-insensitive query_string query with wildcards

Question

In my ES mapping I have an \'uri\' field which is currently set to not_analysed and I\'m not allowed to change the mapping.I wanted to search for uri parts with a query_string q

Answer 1

From the docs, it seems like you need a new analyzer that first transforms to lowercase and then can run the search. Have you tried that? http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/sorting-collations.html

As I read it, your pattern, lowercase_expanded_terms, only applies to expansions, not to regular words http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html lowercase_expanded_terms Whether terms of wildcard, prefix, fuzzy, and range queries are to be automatically lower-cased or not (since they are not analyzed). Default it true

Answer 2

Try to use match query instead of query string.

{
"sort": [
    {
        "updated": {
            "order": "desc"
        }
    }
],
"query": {
    "bool": {
        "must": [
            {
                "match": {
                    "uri": "*w3\\.org\\/2014\\/01\\/a*"
                }
            }
        ]
    }
},
"size": 50
}

Query string queries are not analyzed and but match queries are analyzed.