Using multi_match from the start of fields

Elastic Stack Elasticsearch
1

Hi,

I'm trying to search for drug names in my datastore,

{
  "index": "drugs",
  "body": {
    "size": 20,
    "query": {
      "bool": {
        "must": [
          {
            "term": {
              "RouteOfAdministration": "OR"
            }
          },
          {
            "multi_match": {
              "query": "gabapentin",
              "type": "phrase_prefix",
              "fields": [
                "ProductName",
                "DrugName",
                "GenericName"
              ],
              "minimum_should_match": 1
            }
          }
        ]
      }
    }
  }
}

However this returns drugs that don't belong in the search results. Is there a way I can tweak this to search from the beginning of the fields? As I suspect I'm not doing it correctly.

Thanks!

2

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