I’m not trying to find a specific date. I just want to eliminate any person with a birth date that has “before” in the date field. What is strange, I can easily list ones with the “before” in the field, but can’t get a list without the “before” in the date field.
I did a test and was having no luck using a regular expression on the date field.
This should work as a one time temporary filter.
In the Events list, close the sidebar bringing up the literal filter of the list columns.
Select Date contains and enter the value before. This will allow you to tag the events with before. Then you can create the filter for not tagged. Then the filter for Birth and not tagged. Then the People who match the Event filter. Not pretty and to reuse the filter you would need to tag any new ‘before’ events.
But that will create your list.
The alternative is maybe the generic Isotammi event filters can filter the not ‘before’ events as its own filter. I am not a user of these filters.
There are not many specialty filtering rules for the extra elements for Date Records. The only Rules that are in a similar vein are the addons by @kku : the “Events with a valid date” and “Events with a invalid date” rules in the Isotammi collection. Maybe those could be cloned as the basis for a Date Quality or Date Modifier rule?
Thanks for all your suggestions. After thinking about it more, I suspect the filter was trying to do a calculation looking for what I requested. In the end, it was faster to me just do a visual inspection of the field.