Sử dụng google sheet làm database

function doGet(e) {
  var sheetName = e.parameter.sheet_name;
  var content = getSheetData(sheetName);
  var contentObject = {GoogleSheetData: content}
  return ContentService.createTextOutput(JSON.stringify(contentObject)).setMimeType(ContentService.MimeType.JSON); 
}

function getSheetData(sheetName)  { 
  var ss= SpreadsheetApp.getActiveSpreadsheet();
  var dataSheet = ss.getSheetByName(sheetName); 
  var dataRange = dataSheet.getDataRange();
  var dataValues = dataRange.getValues();  
  return dataValues;
}