MySQL Query to Count Unique Domains from Email Address field

Question

I\'d like to get a better idea of what domains my customers are using. I could easily do this in PHP by explodeing each address and counting the domain that way

Answer 1

Adding ORDER BY to WoLpH's answer makes the output more clear:

SELECT substring_index(email, '@', -1), COUNT(*) AS MyCount
FROM `database`.`table`
GROUP BY substring_index(email, '@', -1)
ORDER BY MyCount DESC;