How to select domain name from email address

Question

I have email addresses like user1@gmail.com, user2@ymail.com user3@hotmail.com ... etc. I want a Mysql SELECT that will trim user name

Answer 1

If you want to know the most used domain names from email addresses you have (can be usefull), you can do :

select (SUBSTRING_INDEX(SUBSTR(email, INSTR(email, '@') + 1),'.',1)) as a,count(*) as c
FROM User
group by a
order by c desc;

Result :