title: How to concat all values of single column in mysql
body: <p>I have column A in the Sample Table1.
  Column A has values as follows.</p>
  
  <pre><code>+----+
  | A  |
  +----+
  | a1 |
  | a2 |
  | a3 |
  | a4 |
  | a5 |
  +----+
  </code></pre>
  
  <p>I need a query that should give the following output.
  All the Values should be </p>
  
  <pre><code>"a1","a2","a3","a4","a5"
  </code></pre>
  
  <p>Is there a way?</p>