N/search Module
Search.columns
Property Description: Columns to return for this search as an array of search.Column objects or a string array of column names. You set this value with an array of search.Column objects or a single search.Column to overwrite any prior return columns for the search. Use null to set an empty array and remove any existing columns on this search.
Type: search.Column[] | string[]
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=Search.columns

// Code Example 1

//Add additional code

//...

function createSearch() {

            var mySalesOrderSearch = search.create({

                type: search.Type.SALES_ORDER,

                columns: ['entity', 'subsidiary', 'name', 'currency'],

            });

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_456374450683.html