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How to use alias in MySQL select query?
To set alias or alternate name in MySQL, you need to use the AS keyword. Let us first create a table −
mysql> create table DemoTable ( Name varchar(100) ); Query OK, 0 rows affected (0.51 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Chris'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Adam'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('David'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Robert'); Query OK, 1 row affected (0.14 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+--------+ | Name | +--------+ | Chris | | Adam | | David | | Robert | +--------+ 4 rows in set (0.00 sec)
Following is the query to set alias in MySQL select query −
mysql> select Name AS FirstName from DemoTable;
This will produce the following output −
+-----------+ | FirstName | +-----------+ | Chris | | Adam | | David | | Robert | +-----------+ 4 rows in set (0.00 sec)
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