Export custom CSV format

There isn’t a UI for it yet, but you can use the ReportCSVExporter class to export report data to CSV. There is a filter for adding row data. We also have some example code for adding a custom table column.

You can also trigger CSV exports using the REST API: POST /wc/v4/reports/orders/export, with a JSON payload that specifies parameters for the report: { "report_args": { "after": "2019-01-01T00:00:00" } }.