How to do sort in using on particular field

Question

I have a document

How to do sort in using on particular field on elasticsearch

My query is below

{
   "sort":{
      "name":&qu         


        

Answer 1

you can make a PUT request on the index to set fielddata as true:

curl --location --request PUT 'http://localhost:9200/index_name/info/_mapping' \
--header 'Content-Type: application/json' \
--data-raw '{
  "properties": {
     "desc": { 
       "type":     "text",
       "fielddata": true
     }
  }
}'

where desc is the column name

Answer 2

Before you enable fielddata, consider why you are using a text field for aggregations, sorting, or in a script. It usually doesn’t make sense to do so.

A text field is analyzed before indexing so that a value like New York can be found by searching for new or for york. A terms aggregation on this field will return a new bucket and a york bucket, when you probably want a single bucket called New York

Instead, you should have a text field for full text searches, and an unanalyzed keyword field with doc_values enabled for aggregations, as follows:

PUT data_new
{
  "mappings": {
    "properties": {
      "name": { 
        "type": "text",
        "fields": {
          "keyword": { 
            "type": "keyword"
          }
        }
      }
    }
  }
}

I guess you can already treat name as keyword using name.keyword like below,

GET /data_new/_search
{
  "sort" : [
     { "name.keyword" : {"order" : "asc"}}
  ],
 "from":10,
 "size":149,
 "query":{
   "match_all":{
     
     }
   }
}

See:

https://www.elastic.co/guide/en/elasticsearch/reference/current/fielddata.html https://www.elastic.co/guide/en/elasticsearch/reference/6.8/search-request-sort.html