grouping the returned data using REST API

Question

can i use grouping to eliminate duplication on the returned values using REST API ?or is there any other way the remove\delete duplicated values using REST?

Answer 1

Use Search API trimduplicates

    var searchApi='/_api/search/query?querytext=%27ContentType:"CT Name"
    var selectedParameter='&trimduplicates=true&selectproperties=%27,Title,Path%27';
    var searchQuery=_spPageContextInfo.siteAbsoluteUrl+searchApi+' %27'+selectedParameter;