How to export field count in a CSV file in jira

[sneha priya]

I have attached 2 Photos, these are the fields ,which I need to export in 2 CSV file from the client project data.

I am trying it with Script Runner plug-in but I am stuck in 2 places:

1. whether I will be able to export the script output  in CSV files.

2. whether I can write the script for getting count of all the columns mentioned .

Any other approach is also appreciated. Below mentioned columns description is 

no_comment= count of comment

vel_starttime= sum of story point of issues assigned to an iteration at the beginning

[Aron Gombas _Midori_]

All these can be exported with the Better Excel Exporter app to XLSX, which can then be converted to CSV from Excel itself.

You should use these app features:

1. Using Excel formulas: if you want to do the calculation on the Excel side
2. Using Groovy scripts: if you want to do the calculation on the Jira side
3. Using calculated fields: if a calculated field that you can freely add, remove or re-order in the Issue Navigator better fits your case