I am trying to delete all voters from a voters table where they are not registered as a democrat or republican AND only voted once. I have a database with three tables, congress_members, voters, and votes and have to JOIN votes with voters in order to delete the right data.
This code finds the data I want to delete:
SELECT voters.*
FROM voters JOIN votes ON voters.id = votes.voter_id
WHERE party = 'green' OR party = 'na' OR party = …