Creating Alert on Getting NULL Values

Hi ,

I want to create an alert when I notice any NULL value in my look. Can anyone have any idea about this??

Set up a schedule rather than an alert, under custom/advanced options in schedule you can say where there is no results

I am not seeing any special way to deal NULL under advanced option in scheduled delievery

On looks: https://docs.looker.com/sharing-and-publishing/scheduling-and-sharing/delivering-looks-explores#send_this_schedule_if