Elasticsearch wildcard fails when there are numbers in search string

Question

I have indexed some string in this index:

{
  "mappings": {
     "record" : {
           "properties" : {
               "my_suggest" : {
                   "type":"completion" 
                }
            }
      }
  }
}

In my index there are these values:

my_suggest = foo1
my_suggest = bar
my_suggest = something2

If I query:

   {
    "query":{
        "wildcard":{"my_suggest":"*foo*"}
        }
    }

I have returned the record number 1.

If I do this query:

   {
    "query":{
        "wildcard":{"my_suggest":"*foo1*"}
        }
    }

I have returned blank results. I am expecting the record number one.

Why this happens?

Thanks.

Rakesh Goyal · Accepted Answer · 2018-03-09 10:18:03Z

2

Elasticsearch uses simple analyser by default, which removes any non letter characters.

https://www.elastic.co/guide/en/elasticsearch/reference/5.5/analysis-simple-analyzer.html

Please use another type of analyser or custom analyser as per your requirements.

https://www.elastic.co/guide/en/elasticsearch/reference/5.5/analysis-analyzers.html

answered Mar 9, 2018 at 10:18

Rakesh Goyal

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