Some of my projects have a 'start date' custom field, and some don't.
I'd like to find all issues, across all projects, that either 1) don't have a start date custom field, or 2) have a blank start date field, or 3) have a start date field on or before today.
I know how to do #2 and #3, but I'm stumped on #1. How can I include issues from projects where 'start date' is not a custom field?
Another way to say it is that I want to find all issues, except for ones that have a start date field in the future.