JavaScript:
	
	-https://stackoverflow.com/a/5120086
SELECT    count(*), email
FROM      user_changes
GROUP BY  email
HAVING    count(*) > 1
		JavaScript:
	
	--https://stackoverflow.com/a/688551
SELECT talamasca.id c FROM talamasca GROUP BY talamasca.id HAVING c > 1
--then find duplicates and select the full rows
select * from talamasca where id in (
  SELECT talamasca.id c FROM talamasca GROUP BY talamasca.id HAVING c > 1
)