Add custom column to the Order Grid for export

Question

I want to add some custom field like sku to add in order grid to export along with the order.

I follow this link Add custom product attribute to Order Grid to do this, but this didn't work in this Magento version.

How to achieve this?

Answer 1

The issue is with the code compilation and cache. Run command

php bin/magento setup:di:compile

php bin/magento cache:flush

and now my custom columns are showing in order grid and also export with other order data.