N/search Module
Result.columns
Property Description: Array of search.Column objects that encapsulate the columns returned in the search result row.
Type: search.Column[] (read-only)
Supported Script Types: All script types For more information, see SuiteScript 2.0 Script Types.
Module: N/search Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Result.columns

// Code Example 1

//Add additional code

 ...

 var mySearch = search.load({

  id: 'customsearch_my_so_search'

});



var firstResult = mySearch.run().getRange({

  start: 0,

  end: 1

  })[0];

log.debug({

  details: "There are " + firstResult.columns.length + " columns in the result."

  });



firstResult.columns.forEach(function(col){ // log each column

  log.debug({

  details: col

  });

});

 ...

 //Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_452222534179.html