[[search-request-fielddata-fields]] === Field Data Fields Allows to return the <> representation of a field for each hit, for example: [source,js] -------------------------------------------------- GET /_search { "query" : { "match_all": {} }, "fielddata_fields" : ["test1", "test2"] } -------------------------------------------------- // CONSOLE Field data fields can work on fields that are not stored. It's important to understand that using the `fielddata_fields` parameter will cause the terms for that field to be loaded to memory (cached), which will result in more memory consumption.