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

Small tweak to Wolph's original above to shorten a bit and add nice column name and limit results in case list is long. Adjust limit to your own liking

select substring_index(email, '@', -1) AS domain, count(*) from TABLE group by domain order by count(*) DESC limit 40;