Is there an option in elastic search to store vales just for the purpose of retrieving and not used for searching? So when indexing we'll index all fields and when searching we'll search on a single field only, but need other data as well. For example, we'll index products, fields could be Name, SKU, Supplier Name etc. Out of which, only Name needs to be indexed and searched. SKU and Supplier Name are just for storing and retrieving with a search.

CodePudding user response：

Use the enabled: false option at field definition to make a field non-indexed.

CodePudding user response：

Since the _source document is stored anyway, the best way to achieve what you want is to neither store nor index any fields, except the one you're searching on, like this:

PUT my-index
{
  "mappings": {
    "_source": {
      "enabled": true           <--- true by default, but adding for completeness
    },
    "properties": {
      "name": {
        "type": "text",
        "index": true           <--- true by default, but adding for completeness
      },
      "sku": {
        "type": "keyword",
        "index": false,         <--- don't index this field
        "store": false          <--- false by default, but adding for completeness
      },
      "supplier": {
        "type": "keyword",
        "index": false,         <--- don't index this field
        "store": false          <--- false by default, but adding for completeness
      },
    }
  }
}

So to sum up:

• the fields you want to search on must have index: true
• the fields you don't want to search on must have index: false
• store is false by default so you don't need to specify it
• _source is enabled by default, so you don't need to specify it
• enabled should only be used at the top-level or on object fields, so it doesn't have its place here

With the above mapping, you can

• search on name
• retrieve all fields from the _source document since the _source field is stored by default and contains the original document