title: Mysql append column value
body: <p>I am having the table with the following structure</p>
  
  <pre><code>      ----------------------------
         id                  content
        ---------------------------
          1                   abc
          2                   bca
        ---------------------------
  </code></pre>
  
  <p>I want to append the character 'd' with the field 'content' ...
  So i want the table structure as follows </p>
  
  <pre><code>       ----------------------------
         id                  content
        ---------------------------
          1                   abcd
          2                   bca
        ---------------------------
  </code></pre>
  
  <p>How can i do this..</p>