Display records by first fixing the first two values in a column and then using DISTINCT to display other values in MySQL

Let us first create a table −

mysql> create table DemoTable 
(
   FirstName varchar(100)
);
Query OK, 0 rows affected (0.96 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('Chris');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('Robert');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('Mike');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('David');
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 −

+-----------+
| FirstName |
+-----------+
| Chris     |
| Robert    |
| Mike      |
| David     |
+-----------+
4 rows in set (0.00 sec)

Following is the query wherein we are fixing the first two values with SELECT and then displaying rest of the values −

mysql> select 'Robert' AS FirstName
   UNION
   select 'David' AS FirstName
   UNION
   select DISTINCT(FirstName) AS FirstName from DemoTable;

This will produce the following output −

+-----------+
| FirstName |
+-----------+
| Robert    |
| David     |
| Chris     |
| Mike      |
+-----------+
4 rows in set (0.00 sec)