How to create a script to merge several sheets in another one? - google-apps-script

Question

Sory for my English, this is not my strength!
I am working for a NGO that charges training sessions.
We have a google sheet that compiles datas about participants at each training days one by one in different spreadsheets.
So my yearly document is composed of something like 30 spreadsheets.
I would like to create one more spreadsheet that would merge all the data from other tabs in order to :
- be able to see quickly who has not payed yet his bill
- calculate the total amount made
I know I can do it by using the Filter function but it is really time-consuming for so many spreadsheets and if I add a training session I would have to change the formula. Moreover, I will be forced to do it each year.
So I would like to create a button to import all the data in a new spreadsheet.
You will find an example of the sheet with only 2 spreadsheets here :
https://docs.google.com/spreadsheets/d/1-RxzUGJFXnU3_mJ3Qj0MCTpwPTlnmgIT439AchyrRrE/edit?usp=sharing
I hope you would be able to help me!!
Thanks and happy new year :D

Answer 1

Merging Sheets in another sheet in same spreadsheet.
You will need the id for spreadsheet named 'CopiDdeFCCE' the other parameter will default to 'CopieDdeFCCE'.
function mergeSpreadsheet(ssid,shname){
var shname=shname || 'CopieDdeFCCE';
var ss=SpreadsheetApp.openById(ssid);//id of spreadsheet named 'CopieDdeFCCE' in your case
var sh=ss.getSheetByName(shname);//sheetname of sheet where other sheets are merged into again in your case its named 'CopieDdeFCCE'
if(!sht){ss.insertSheet(shname);}
var allshts=ss.getSheets();
for(var i=0;i<allshts.length;i++){
if(allshts[i].getName()!=shname){//do this for all sheets except shname
var shi=allshts[i];
var rg=shi.getDataRange();
var vA=rg.getValues();
shi.getRange(sh.getLastRow() + 1, 1,shi.getLastRow(),shi.getLastColumn()).setValues(vA);
}
}
}
Just to be clear.
What Google calls the spreadsheet is the file that contains all of the tabs (i.e. sheets).
In your first comment you said the following: I would like to merge all the 28 sheets of a file called "CopieDdeFCCE" to a new sheet of the same file.
But now in your question you say: I would like to create a button to import all the data in a new spreadsheet.
You stated in your last comment that your command looks like this: mergeSpreadsheet("1KC6kHcgtLZ93S4-r4wOwHFOG6Rq3mesGRKv26Ttnm9E","CopieDdeFFCE")
But clearly that's not the id of the example and the example does not have a sheet with that name.
So my question is: What exactly do you want?

Answer 2

Very sory I did not receive any notification of your reply because it was an edit and when I came to see if you wrote something I looked at the bottom of the site. :/
First of all, happy new year and thank you again for your help!!
Here are the precisions you asked :
1° Indeed, I would like to merge all the 28 sheets of a file called "CopieDdeFCCE" to a new sheet of the same file. To be more accurate, I give you the link of the exact location of the document with some examples of sheets: link.
2° Secondly, I will create a button to update all the data easily. But I think I know how to do that, so forget that question for now ;)
3° In the document I put enclosed, do we agree that the "id" is : 1KC6kHcgtLZ93S4-r4wOwHFOG6Rq3mesGRKv26Ttnm9E ??
Thanks again for all your time!