如何使用应用脚本从 Gmail CSV 附件中提取特定列到 Google 电子表格？

Question

I'm using an automated script which helps me to pull the gmail csv attachment to the spreadsheet but i want to parse only specific columns instead of entire report format from csv file that i'm getting in my gmail inbox. 如果您可以在这里提供帮助，那将是一个很大的帮助这里是脚本：

function getattach(){

var threads = GmailApp.search('Daily Hunting file has:attachment newer_than:1d');

var messages = threads[0].getMessages();
var attach = messages[0].getAttachments();
var timestamp = messages[0].getDate();

for (var i = 0; i < attach.length; ++i) {

  var data = attach[i].copyBlob();
  var name = data.getName();
  
  var result = name.indexOf('report.csv');
  if (name.indexOf('report.csv')>-1) {
      var csvData = Utilities.parseCsv(data.getDataAsString());
  } //end if

} //end for
   
return csvData;

}

function updateSheet(){

var ss = SpreadsheetApp.getActive();
var ImportSheet = ss.getSheetByName('Import');

var ImportData = getattach();

//Write results to the Sheet
var lastRow = ImportSheet.getLastRow();
if (lastRow < 1) lastRow = 1;
ImportSheet.getRange(1,1,lastRow, ImportData[0].length).clearContent();

ImportSheet.getRange(1,1,ImportData.length, ImportData[10].length).setValues(ImportData);

}

Answer 1

从 csv 文件中获取列

function getColumnFromCSV(id="file id",col=9) {
  const file = DriveApp.getFileById(id)
  const a = Utilities.parseCsv(file.getBlob().getDataAsString());
  let o = a.map(r => r[col - 1]).flat()
  Logger.log(JSON.stringify(o))
}

Execution log
1:19:20 PM  Notice  Execution started
1:19:21 PM  Info    ["COL9","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28"]
1:19:22 PM  Notice  Execution completed

文件：

COL1,COL2,COL3,COL4,COL5,COL6,COL7,COL8,COL9,COL10
1,2,3,4,5,6,7,8,9,10
2,3,4,5,6,7,8,9,10,11
3,4,5,6,7,8,9,10,11,12
4,5,6,7,8,9,10,11,12,13
5,6,7,8,9,10,11,12,13,14
6,7,8,9,10,11,12,13,14,15
7,8,9,10,11,12,13,14,15,16
8,9,10,11,12,13,14,15,16,17
9,10,11,12,13,14,15,16,17,18
10,11,12,13,14,15,16,17,18,19
11,12,13,14,15,16,17,18,19,20
12,13,14,15,16,17,18,19,20,21
13,14,15,16,17,18,19,20,21,22
14,15,16,17,18,19,20,21,22,23
15,16,17,18,19,20,21,22,23,24
16,17,18,19,20,21,22,23,24,25
17,18,19,20,21,22,23,24,25,26
18,19,20,21,22,23,24,25,26,27
19,20,21,22,23,24,25,26,27,28
20,21,22,23,24,25,26,27,28,29