Select Domain Name from Email Address in MySQL

To select domain name from email address, you can use in-built SUBSTRING_INDEX() function from MySQL.

To understand the concept, let us create a table. The following is the query to create a table.

mysql> create table selectDomainNameOnly
   −> (
   −> UserEmailAddress varchar(200)
   −> );
Query OK, 0 rows affected (0.52 sec)

Insert records in the table using insert command. The record will have email-ids from which we need to fetch the domain name. The query is as follows −

mysql> insert into selectDomainNameOnly values('[email protected]');
Query OK, 1 row affected (0.10 sec)
mysql> insert into selectDomainNameOnly values('[email protected]');
Query OK, 1 row affected (0.24 sec)
mysql> insert into selectDomainNameOnly values('[email protected]');
Query OK, 1 row affected (0.16 sec)

Display all records from table using select statement. The query is as follows −

mysql> select *from selectDomainNameOnly;

The following is the output −

+------------------------+
| UserEmailAddress       |
+------------------------+
| [email protected]      |
| [email protected]       |
| [email protected] |
+------------------------+
3 rows in set (0.00 sec)

The following is the query to select only domain name. The query is as follows −

mysql> select (SUBSTRING_INDEX(SUBSTR(UserEmailAddress, INSTR(UserEmailAddress, '@') + 1),'.',1)) as DomainName from selectDomainNameOnly;

The following is the output −

+------------+
| DomainName |
+------------+
| yahoo      |
| gmail      |
| hotmail    |
+------------+
3 rows in set (0.06 sec)