How to view all custom fields that have no data?

[Jeremy Jedlicka]

Hi, 

Is it possible to generate a list of all custom fields that has not had any data populated into it?

I just took over a data center that has 50 separate projects sharing 304 custom fields. I want to get a handle on these fields and to see if we truly need 304, but I can't find an easy way to see which of these 304 fields has not had any data added to them.

Is this possible to generate a report like this?

[Ivan Lima]

Yes. In Jira DC, you can analyze the usage of custom fields. Some apps can help you with that too. See managing custom fields in Jira effectively for more details where you can find a few suggested apps and database queries.

[Babs Adewole]

If you access to the database, this query should get you what you need with some level of accuracy

select * 
from customfield cf
where cf.id not in (
select distinct c.customfield 
from customfieldvalue c)