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Set 'alias' for all the column names in a single MySQL query
To set alias for column names, the syntax is as follows −
select yourColumnName1 anyAliasName1,yourColumnName2 anyAliasName2 from yourTableName anyAliasName;
To understand the above syntax, let us create a table −
mysql> create table DemoTable2014 -> ( -> FirstName varchar(20), -> LastName varchar(20) -> ); Query OK, 0 rows affected (0.70 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable2014 values('John','Smith'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable2014 values('David','Miller'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable2014 values('John','Doe'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable2014 values('Chris','Brown'); Query OK, 1 row affected (0.16 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable2014;
This will produce the following output −
+-----------+----------+ | FirstName | LastName | +-----------+----------+ | John | Smith | | David | Miller | | John | Doe | | Chris | Brown | +-----------+----------+ 4 rows in set (0.00 sec)
Here is the query to set 'alias' for column names in a single MySQL query −
mysql> select FirstName StudentFirstName,LastName StudentLastName -> from DemoTable2014 tbl;
This will produce the following output −
+------------------+-----------------+ | StudentFirstName | StudentLastName | +------------------+-----------------+ | John | Smith | | David | Miller | | John | Doe | | Chris | Brown | +------------------+-----------------+ 4 rows in set (0.00 sec)
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