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Fields

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Fields

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The stored_fields parameter is about fields that are explicitly marked as stored in the mapping, which is off by default and generally not recommended. Use source filtering instead to select subsets of the original source document to be returned.

Allows to selectively load specific stored fields for each document represented by a search hit.

GET /_search
{
    "stored_fields" : ["user", "postDate"],
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}

* can be used to load all stored fields from the document.

An empty array will cause only the _id and _type for each hit to be returned, for example:

GET /_search
{
    "stored_fields" : [],
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}

If the requested fields are not stored (store mapping set to false), they will be ignored.

Stored field values fetched from the document itself are always returned as an array. On the contrary, metadata fields like _routing are never returned as an array.

Also only leaf fields can be returned via the stored_fields option. If an object field is specified, it will be ignored.

On its own, stored_fields cannot be used to load fields in nested objects — if a field contains a nested object in its path, then no data will be returned for that stored field. To access nested fields, stored_fields must be used within an inner_hits block.

Disable stored fields entirely

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To disable the stored fields (and metadata fields) entirely use: _none_:

GET /_search
{
    "stored_fields": "_none_",
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}

_source and version parameters cannot be activated if _none_ is used.

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