Sorting two column in one column
<p>Suppose i have a table - persons</p>

<pre><code>id | First Name  | Last Name
-----------------------------'
1    AA             BB
2    EE             DD
3    CC             FF
</code></pre>

<p>Here , i want to display first name and last name in 1 column.</p>

<pre><code>Such that output would be 
----------------------
AA
BB
CC
DD
EE
FF

Can i also display it as 
------------------
1 AA
1 BB
3 CC
2 DD
2 EE
3 FF
</code></pre>

<p>Using Mysql query ??</p>