Search part of string with ElasticSeach

Question

In ElasticSearch, I tried to makeit search for a part of a word. My example data is

{
  "_id" : "1",
  "name" : "Nopales",
}
{
  "_id" : "2",
  "name" : "ginger ale",
}
{
  "_id" : "3",
  "name" : "Kale",
}
{
  "_id" : "4",
  "name" : "Triticale Flour Whole Grain",
}

and the request is to find the matching words with the word "ale is"

GET /_search
{
    "query": {
                "query_string" : {"default_field" : "name", "query" : "*ale*"}
            } 

}

and it returns the results like

Kale, Triticale Flour Whole Grain, ginger ale, Nopales

but the best match is ginger ale, which contains the exact word, then kale, then nopales based on word counts then Triticale Flour Whole Grain. Anyone have idea how to achieve this?

Ashish Tiwari · Answer 1 · 2018-07-30T10:14:48.540

0

I think you should use *ale . In your query it searching for ale in all values of name field. And these all values Kale, Triticale Flour Whole Grain, ginger ale, Nopales contains ale. When you will query with *ale, It will search for string which ending with ale. You can also use like this "query" : "(*ale)OR(ale*)" for different kind of wildcards.

edited Jul 30 '18 at 10:14

answered Jul 30 '18 at 09:10

Ashish Tiwari

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I want to check for relevance also, if any words starts with ale then it has more priority, here ginger ale, the second word is an exact match – Vidya L Jul 30 '18 at 09:17
You can specify your query with 'OR' condition like this ```"query" : "(*ale)OR(ale*)"```. You can modify according to your need. – Ashish Tiwari Jul 30 '18 at 09:40
any method to sort it by word count? – Vidya L Jul 30 '18 at 09:54
may be this can help you out https://stackoverflow.com/questions/29782450/elasticsearch-order-by-string-length – Ashish Tiwari Jul 30 '18 at 10:11

Search part of string with ElasticSeach

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