Follow up to Totally UnScripted Episode 3: SQL like queries in Google Apps Script

queryASpreadsheet.gs

/**
 * quickly test our function
 */
function test(){
  var result =  queryASpreadsheet('1sPevvtTMSd9LUptX8qdsw4VJf07nOal_1qn9JLwO4fQ', 
                                   'Example Data',
                                   'A1:C',
                                   'SELECT A,B,C WHERE B < 7');
  
  var rows    = result.length;//7
  var columns = result[0].length;//3
  
  // first clear anything in a sheet by that name in case running twice
  var thisWorkbook = SpreadsheetApp.getActiveSpreadsheet();
  var outputSheet = thisWorkbook.getSheetByName('outputSheet');
  if (outputSheet) {
    outputSheet.clear();
  }
  else {
    // insert a new sheet at the beginning
    outputSheet = thisWorkbook.insertSheet('outputSheet' , 0 );
  }
 
 // write to the outputSheet
  var outputSheet = outputSheet.getRange(1,1,rows, columns).setValues(result);
return true;
}//end test
/**
 * This function uses url fetch to get data from a spreadsheet using a query style 
 * 
 * @param  {String} sheetId
 * @param  {String} sheetName
 * @param  {String} rangeSyntax a few example range syntax arguments:  "A1:B10" - A range from cell A1 through B10", "5:7" - Rows 5-7, "D:F" - Columns D-F, "A:A70" - The first 70 cells in column A, "A70:A" - Column A from row 70 to the end, "B5:5" - B5 to the end of row 5, "D3:D" - D3 to the end of column D,"C:C10" - From the beginning of column C to C10
 * @param  {String} queryString 
 * @return {Object[][]} dataTwoD is a JavaScript 2d array; rather this is an array of rows where the rows are arrays of values.
 */
function queryASpreadsheet(sheetId, sheetName, rangeSyntax, queryString) {
 //DriveApp.getRootFolder() 
 var url = 'https://docs.google.com/spreadsheets/d/'+sheetId+'/gviz/tq?'+
            'range=' + rangeSyntax +
            '&tqx=out:csv' +
            '&sheet='+sheetName+
            '&tq=' + encodeURIComponent(queryString);

  var params = {
    headers: {
      'Authorization': 'Bearer ' + ScriptApp.getOAuthToken()
    },
    muteHttpExceptions: true
  };
  
  var csvData   = UrlFetchApp.fetch(url, params); //Returns Object — a map of Field Name to Value. The map usually has at least the following keys: url, method, contentType, payload, headers; however, trial an error in the editor showed me i could use .getContentText()
  var csvString = csvData.getContentText();
  // This will create a 2 dimensional array of the format [[a, b, c], [d, e, f]]
  var dataTwoD = Utilities.parseCsv(csvString);

  return dataTwoD;
}