Elasticsearch – Compare/ScriptFilter/Condition on Two Fields using Script Filter – REST Query + Java API
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Example 1:

GET /INDEX/TYPE/_search
{
     "query": {
          "filtered": {
               "filter": {
                    "script": {
                         "script": "doc['field1'].value <  doc['field2'].value"
                    }
               }
          }
     }
}

Example 2:

GET /INDEX/TYPE/_search
{
     "query": {
          "filtered": {
               "filter": {
                    "script": {
                         "script": "doc['field1'].value -  doc['field2'].value > 10"
                    }
               }
          }
     }
}

Java API:

import org.elasticsearch.index.query.FilterBuilders;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.index.query.FilteredQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;

FilteredQueryBuilder query = QueryBuilders.filteredQuery(null, FilterBuilders.scriptFilter("doc['field1'].value <  doc['field1'].value"));
SearchRequestBuilder searchRequestBuilder = esClient.prepareSearch("INDEX").setTypes("TYPE").setQuery(query).setSize(10);
SearchResponse searchResponse = searchRequestBuilder.execute().actionGet();

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