Lấy phần trước @ trong email với MySQL

Sử dụng hàm SUBSTRING_INDEX:

select substring_index(yourColumnName,'@',1) from yourTableName;

Tạo bảng:

mysql> create table DemoTable -> ( -> EmployeeMailId varchar(100) -> ); Query OK, 0 rows affected (0.52 sec)

Chèn dữ liệu:

mysql> insert into DemoTable values('Larry123@gmail.com'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('987Sam@hotmail.com'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('123456David_98@gmail.com'); Query OK, 1 row affected (0.20 sec)

Hiển thị dữ liệu:

mysql> select *from DemoTable;

Kết quả

+--------------------------+ | EmployeeMailId | +--------------------------+ | Larry123@gmail.com | | 987Sam@hotmail.com | | 123456David_98@gmail.com | +--------------------------+ 3 rows in set (0.00 sec)

Truy vấn lấy phần trước @:

mysql> select substring_index(EmployeeMailId,'@',1) from DemoTable;

Kết quả

+---------------------------------------+ | substring_index(EmployeeMailId,'@',1) | +---------------------------------------+ | Larry123 | | 987Sam | | 123456David_98 | +---------------------------------------+ 3 rows in set (0.00 sec)